2025 plumbing 10-19-11 (2)Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 1 of 44 224000
INDEX
SECTION 224000 –PLUMBING
PART 1 –GENERAL PART 3 –INSTALLATION
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
1.11
1.12
1.13
1.14
1.15
1.16
1.17
1.18
RELATED DOCUMENTS
SCOPE OF WORK
CODES, ORDINANCES AND INSPECTIONS
INSTALLATION REQUIREMENTS
QUALITY ASSURANCE
PRODUCTS
SUBMITTALS
PERMITS, FEES AND INSPECTIONS
TEMPORARY HOOK-UPS
PLANS AND SPECIFICATIONS
DELIVERY, STORAGE, AND HANDLING
ENVIRONMENTAL CONDITIONS
PROTECTION
CUTTING AND PATCHING
WORK CONCEALED
OPERATING INSTRUCTIONS
GUARANTEE
RECORD DRAWINGS
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
SOIL, WASTE, DRAIN AND VENT PIPING
INSTALLATION OF SEWER PIPE
WATER PIPE, FITTINGS AND CONNECTIONS
VALVES
CUTTING AND PATCHING
INSULATION
SLEEVES AND ESCUTCHEONS
TESTING
CLEANING UP
EQUIPMENT INSTALLATION
DISINFECTION
FIRE SAFING
PART 2 –MATERIALS
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.14
2.15
2.16
2.17
2.18
2.19
2.20
PIPING MATERIALS
VALVES
HANGERS
TRAPS
CLEANOUTS /ACCESS PANELS
INSULATION
THERMOMETERS
PRESSURE GAUGES
WATER HAMMER ARRESTERS
ACCESS PANELS
PLUMBING FIXTURES AND FIXTURE TRIMMINGS
TRAP PRIMER
ELECTRIC DOMESTIC HOT WATER HEATER
WATER METER
RE-CIRCULATING PUMPS
THERMOSTATIC MIXING VALVE ASSEMBLY
BACKFLOW PREVENTERS
GAS SERVICE
VIBRATION AND SEISMIC CONTROL
SECTION 220000 -PLUMBING
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 2 of 44 224000
PART 1 -GENERAL
1.1 RELATED DOCUMENTS
A.Include General Conditions, Supplementary General Conditions, and
applicable parts of Division 1, as part of this Section.
B.Examine all other Sections of the Specifications for requirements, which
affect work under this Section whether or not such work is specifically
mentioned in this Section.
C.Co-ordinate work with that of all other trades affecting, or affected by
the work of this Section. Co-operate with such trades to assure steady
progress of all work under the Contract.
1.2 SCOPE OF WORK
A.Furnish all labor, materials, plant, equipment and services necessary for
and reasonably incidental to the complete installation of all plumbing
work specified herein and/or indicated on the Drawings, including, but
not limited to, the following:
1.New sanitary, waste and vent systems piping inside the building
and connecting to existing within the basement, or as specifically
called out on the Drawings. Furnish piping, traps, flanges, seals,
cleanouts, fixtures, drains, supports, and roof terminals.
2.New hot and cold water distribution and hot water recirculation
systems. Furnish piping, fittings, insulation, supports, valves,
backflow preventers and pumps.
3.Natural Gas piping systems per Massachusetts Fuel Gas Code,
including connections to new gas service, and HVAC equipment
provided by others; individual meters for each tenant as well as an
Owner’s meter.
4.Provide and install water meter and pressure reducing station at
domestic water service entrance.
5.Provide back water preventers (point-of-use types) where shown
on Drawings, specified, or required.
6.Plumbing fixtures and supports.
7.Arrange for inspections and perform cleaning and testing.
8.All final connections to all items of equipment furnished by others
requiring water, gas, drain, and waste connections.
9.Furnish access panels.
10.Guarantee and instructions.
B.Refer to appropriate Division -2 Sections for trenching and backfill
required in conjunction with plumbing piping; not work of this Section.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 3 of 44 224000
1.3 CODES, ORDINANCES AND INSPECTIONS
A.All materials and the installation thereof shall conform to the
requirements of the Massachusetts State Building Code, Electrical Code,
Fuel Gas and Plumbing Code and local laws, rules, regulations,and codes
pertaining thereto. Where provisions of the Contract Documents conflict
with any codes, rules or regulations, the latter shall govern. Where the
Contract requirements are in excess of applicable codes, rules or
regulations, the Contract provisions shall govern unless the Architect
rules otherwise.
B.The Plumbing Contractor shall comply with the Local Code Enforcement
Officials' instructions at no additional cost to the Owner.
1.4 INSTALLATION REQUIREMENTS
A.The Plumbing Contractor shall employ only competent and experienced
workmen at a regular schedule in harmony with the other tradesmen on
the job. He shall also exercise care and supervision of his employees in
regard to proper and expeditious laying out of his work.
B.The Plumbing Contractor shall have a Foreman or Superintendent
assigned to the Project who shall be authorized to make decisions and
receive instructions exactly as if the Plumbing Contractor himself were
present. The Foreman or Superintendent shall not be removed or
replaced without the express approval of the Architect after construction
work begins.
C.The Plumbing Contractor shall be held responsible for any injuries or
damage done to the building premises or adjoining property or to other
Subcontractors' work resulting from the execution of his part of the work
in any manner whatsoever; and in case of dispute arising as to the extent
or share of responsibility incurred by the Plumbing Contractor, it is
agreed between the Owner and the Plumbing Contractor that such
liability and extent of damage shall be finally determined by the Architect
whose decision shall be final and binding on both parties to the Contract
for the work in question.
D.The Plumbing Contractor shall co-ordinate to the fullest extent with all
other trades in order to expedite the progress of the work. He shall
furnish all information pertaining to his materials as to sizes, locations,
and means of support, to all other trades requiring such information.
The Plumbing Contractor shall also furnish all sleeves, frames, beams,
supports, inserts, etc., hereinafter specified so that the General Contrac-
tor may build them in place. In case of failure on the part of the
Plumbing Contractor to give proper information as above, he will be
required to bear the extra expense involved due to such failure.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 4 of 44 224000
E.The arrangement of all piping, duct work, conduit, wire and cable
indicated on the Drawings is diagrammatic only, and indicates the
minimum requirements of this work. Conditions at the building shall
determine the actual arrangement of runs, bends, offsets, etc. The
Plumbing Contractor shall lay out all his work and be responsible for the
accuracy thereof. Conditions at the building shall be the determining
factor for all measurements.
F.All work shall be laid out and installed so as to require the least amount
of cutting and patching. Drilling of all holes required for the installation
of pipes, conduit, and cable runs shall be performed by the
Subcontractor installing such items.
G.The Plumbing Contractor shall be responsible for the proper protection
of his work and materials from injury or loss at the hands of others and
shall make good such loss or injury at his own expense. All pipes left
open during the progress of the work shall be capped or plugged at all
times. All instruments and operating apparatus shall be protected by
suitable means.
H.The Plumbing Contractor shall be responsible for all equipment and
materials installed under this Section until the final acceptance of the
project by the Owner.
I.The Plumbing Contractor shall check all of the Architectural Plans and
Specifications before ordering any materials and the installation of work.
Any discrepancies shall be called to the attention of the Architect before
proceeding with the work.
1.5 QUALITY ASSURANCE
A.Equality of materials or articles other than those named or described in
this Section will be determined in accordance with the provisions of the
General Requirements, except that substitutions will only be considered
for items where the words, "or equal" appear in the product specification,
and as approved by the Architect and Owner.
B.The Plumbing Contractor shall agree to accept as final the results of tests
secured by a qualified testing laboratory engaged by the Owner. Tests
will be conducted in accordance with the General Requirements.
1.6 PRODUCTS
A.With the exception of items specifically noted otherwise, all materials
used shall be U.S. made, new, full weight, and first class in every respect,
without defects, and designed to function properly in that portion of the
work for which they are intended, and with the same brand of
manufacturer for each class of material or equipment. Electrical
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 5 of 44 224000
materials and equipment of types for which there are Underwriters
Laboratories standard requirements, listings, or labels shall conform to
their requirements and be so labeled.
1.7 SUBMITTALS
A.Before ordering materials shipped to the job, the Plumbing Contractor
shall submit to the Architect six (6) sets of catalogue cuts,
manufacturers' data sheets, or Shop Drawings, giving all details, dimen-
sions, capacities, etc. of all materials to be furnished.
B.The Plumbing Contractor shall check the Shop Drawings thoroughly for
compliance with the Plans and Specifications before submitting them to
the Architect for review, making any and all changes which may be
required.
C.The review of Shop Drawings by the Architect shall not relieve the
Plumbing Contractor from any obligation to perform the work strictly in
accordance with the Contract Drawings and Specifications. The respon-
sibility for errors in Shop Drawings shall remain with the Plumbing
Contractor.
D.In the event that materials are being delivered to or installed on the job
for which Shop Drawings or samples have not been approved and/or
which are not in accordance with the Specifications, the Plumbing
Contractor will be required to remove such materials and substitute
approved materials at his own expense and as directed by the Architect.
1.8 PERMITS, FEES AND INSPECTIONS
A.The Plumbing Contractor shall secure all permits and pay all fees
required for his work. He shall be required to secure all other permits
and pay all other fees and charges incidental to the proper carrying out
of the Contract. He is to assume all responsibility regarding the
observance of the rules and regulations so far as they relate to his part
of the work.
B.The Plumbing Contractor shall arrange and pay for all required
inspections of his work.
1.9 TEMPORARY HOOK-UPS
A.The General Contractor will provide any temporary hook-ups required
for the use of water or sanitary for construction purposes and testing out
apparatus as specified in Section 01500.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 6 of 44 224000
1.10 PLANS AND SPECIFICATIONS
A.The Plumbing Contractor shall refer to the Architectural Drawings of
interior details, plans, elevations, and structural layout in preparing his
estimate. These documents are intended to supplement the Mechanical
and Electrical Plans and Specifications and any applicable work indicated
or implied thereon is to be considered a part of the Contract
requirements.
B.The Specifications complementary and anything called for, or reasonably
implied, in the Plans and not in the Specifications, or vice versa, shall be
considered as called for or reasonably implied in both.
C.The Plumbing Contractor shall not scale the Drawings.
D.Because of the small scale of the Drawings, it is not possible to indicate
all offsets, fittings and accessories that may be required. The Plumbing
Contractor shall carefully investigate the structural and finish conditions
affecting all his work and shall arrange such work accordingly, furnishing
such fittings, traps, offsets, valves, and accessories as may be required
to meet such conditions, at no additional cost.
1.11 DELIVERY, STORAGE, AND HANDLING
A.Delivery: The Plumbing subcontractor shall provide for the delivery of all
his materials and fixtures to the building site when required so as to
carry on his work efficiently and to avoid delaying his work and that of
other trades. The Plumbing Contractor shall take delivery of all pre-
purchased plumbing fixtures and equipment, and shall be responsible
for the proper handling, storage, and protection of these materials from
that point on. Any damage or loss of these materials after delivery shall
be the responsibility of this Contractor.
B.Storage and Handling: The Plumbing Contractor shall, at all times, fully
protect his work and materials from injury or loss by others. Any injury
or loss which may occur shall be made good without expense to the
Owner. The Plumbing Contractor shall be responsible for the proper
protection of all his materials until the building is accepted by the
Owner.
1.12 ENVIRONMENTAL CONDITIONS
A.All necessary tools machinery, scaffolding, and transportation for
completion of his Contract shall be provided by the Plumbing Contractor.
B.The Plumbing Contractor shall provide his own portable extension lines
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 7 of 44 224000
and obtain 120 volt, 60 cycle, single phase electric energy from the
General Contractor to drive his machines and light his work. He shall
provide his own light bulbs, plugs, sockets, etc.
C.All broken or waste material, rags, packing, etc., resulting from his work
shall be removed by the Plumbing Contractor.
1.13 PROTECTION
A.The Plumbing Contractor shall, at all times, fully protect his work and
materials from injury or loss by others. Any injury or loss which may
occur shall be made good without expense to the Owner. The Plumbing
Contractor shall be responsible for the proper protection of all his
materials until the building is accepted by the Owner.
1.14 CUTTING AND PATCHING
A.Cutting and/or drilling of all openings and holes 4" in diameter or
smaller, required for the installation of plumbing in the building, shall be
performed by the Plumbing Contractor. All work and materials shall be
installed in such a manner and at such time to keep cutting and patching
to a minimum. Cutting and/or drilling of structural supports (ie. beams
or joists) is not allowed without written approval by the Architect.
Location for openings, etc. shall be checked by the Plumbing Contractor,
and error due to failure to co-ordinate work with other divisions shall be
the responsibility of the Plumbing Contractor failing to co-ordinate, who
shall make the corrections at his own expense.
B.All holes larger than 4" in diameter shall be provided by the General
Contractor.
C.Work shall include furnishing and locating sleeves or inserts required
before the new walls are built, or be responsible for the cost of cutting
and patching required for pipes where sleeves were not installed or
where incorrectly located. The Plumbing Contractor shall do all drilling
required for the installation of hangers.
D.Patching of all holes, after installation of piping or equipment, shall be
performed by the General Contractor or appropriate tradesmen.
E.All pipe cutting or threading shall be done in a location approved by the
Owner.
F.No pipe cutting or threading shall be done in areas where completed
concrete floor slab is to remain in finishes or be painted later. Should
this area be necessary, the Plumbing Contractor shall cover the entire
working area with canvas tarpaulins in an approved manner.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 8 of 44 224000
1.15 WORK CONCEALED
A.All piping, hangers and supports shall be installed concealed in all areas
except storage rooms and mechanical or electrical equipment rooms.
B.Piping containing water shall not be installed concealed in walls having
an exterior exposure above grade, unless specifically so shown on the
Drawings. When pipes are indicated to be installed in exterior walls, the
Plumbing Contractor shall be responsible for ensuring that wall and pipe
insulation is properly installed to protect them from freezing.
1.16 OPERATING INSTRUCTIONS
A.After all final tests and adjustments have been completed, fully instruct
the proper Owner's representative in all details of operation of
equipment installed. Supply qualified personnel to operate equipment
for sufficient length of time to assure that Owner's representative is
properly qualified to take over operation and maintenance procedures.
B.Furnish the Architect, for his approval, three (3) copies of an Operation
and Maintenance Manual. Inscribe the following identification on the
cover: the words, "Operation and Maintenance Manual", the name and
location of the equipment or the building, the name of the
Subcontractor, and the Contract number. The manual shall have a Table
of Contents with tab sheets placed before each section. The instructions
shall be legible and easily read, with large sheets of drawings folded in.
the manuals shall be bound in hard binders or an approved equivalent.
C.The Manual shall include the following information:
1.Description of systems.
2.Description of start-up, operation, and shutdown.
3.Schedule of adjustment, care, and routine maintenance for each
item of equipment.
4.Lubrication chart.
5.Wiring and control diagrams with data to explain detailed
operation and control of each item of equipment.
6.Valve chart.
7.List of recommended spare parts.
8.Copies of all service contracts.
9.Performance curves for pumps, etc.
10.List of all names, addresses, and phone numbers of all
Subcontractors as well as the local representative for each item of
equipment.
1.17 GUARANTEE
A.The Plumbing Contractor shall guarantee the satisfactory operation of his
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 9 of 44 224000
work in all parts for a period of one (1) year after the date of final
acceptance, and shall agree to promptly repair or replace any items of
his work which are found to be defective during this period.
B.The Plumbing Contractor shall pay for repair of damage to the building
caused by defects in his work and for repair to plaster, wood, and other
materials or equipment caused by replacement or repairs to the entire
satisfaction of the Architect.
C.Any part of the work installed under this Contract requiring excessive
maintenance shall be considered as being defective.
1.18 RECORD DRAWINGS
A.Submit Record Drawings as specified in Project Closeout, Section 01700.
B.Record Drawings shall reflect all changes from the contract Drawings
whether by Change Order or by filed conditions. Principal dimensions of
concealed work and for piping installation. Valve numbers shall be
added as soon as established.
PART 2 -PRODUCTS
2.1 PIPING MATERIALS
A.All soil, waste and vent piping in accessible areas 2" and larger, shall be
cast iron "no hub", ASA Group 022 pipe and fittings, joined with cast iron
clamps as manufactured by "Clamp-All". All soil, waste, and vent below
slab shall be service weight, cast iron pipe with oakum and lead, sealed
gas and watertight. In lieu of lead and oakum joint piping, below slab
may be service weight with push-on rubber rings. Minimum size below
slab shall be 2”. Where it is impractical to install cast iron pipe, as in
tight partition work or where sizes are smaller that 2”, Type “L” copper
tubing shall be used conforming to ASTN Specification with sweat type
fittings using lead free solder and non-corrosive flux, “Non-Corrode,” or
approved equal conforming to ASTM Specification B 32 Alloy 50A.
Provide extra heavy cast iron for urinal connections.Where allowed by
code, schedule 40 ABS piping may be used for sanitary, waste and vent
piping.
B.In lieu of cast iron piping, Type "L" copper pipe with solder fittings or
ABS plastic pipe with glued fittings may be used for all sanitary, waste,
and vent piping above ground. ABS plastic pipe shall be used in
residential spaces only.
C.All waste lines 2" and smaller shall be Type "L" copper. All vent lines 2"
and smaller shall be type "L" copper, or DWV, except minimum size
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 10 of 44 224000
below ground shall be 2”. Minimum vent terminal through the roof shall
be 4”. Vent flashing at the roof shall be by Roofing Contractor.In lieu of
cast iron and/or copper pipe above floor where allowed by code,
Schedule 40 ABS piping may be used.
D.All hot and cold water and hot water re-circulating piping within the
building shall be hard copper Type "L" seamless drawn tubing,
assembled with sweat fittings. All solders used shall be lead free,
cadmium free, "Silberbrite-100", or equal, complying with the latest
issue of ANSI A-5.8 publications. All exposed runs to all toilet fixtures
and sinks shall be chrome plated. All below slab trap primer peed piping
shall be type “K” soft rolled with silver solder joint.
E. All water service piping on site and fittings into the building,and where
noted otherwise, shall be Class 52 ductile iron pipe, cement lined and seal
coated with a bituminous outside coating per AWWA Specifications with
mechanical joints up to the water meter. All ductile iron pipe shall be
from a single manufacturer and shall be manufactured in the United
States. The pipe shall be manufactured by U.S. Pipe & Foundry Company
or Griffin Manufacturing.
F.All gas piping shall be Schedule 40 black steel pipe with malleable pattern
fittings, installed in strict compliance with the Massachusetts Fuel Gas
Code, (248 CMR 5.00). All piping 2" and below shall be assembled with
screwed malleable iron fittings; 2-1/2" and above shall be welded.
Provide necessary ball type gas shut-off valves or square head cocks on
piping 2" and smaller and drips as required. Piping 2" and larger shall
have plug valves. All high pressure gas piping shall be Schedule 40, all
welded with flanged plug valves. All gas valves shall be rated for 125 psi
working pressure.
1.All gas piping, including gas valve and final connections to kitchen
and HVAC equipment, shall be the responsibility of the Plumbing
Subcontractor.
2.All welding shall be done in accordance with the welding
procedures of the National Certified Pipe Welding Bureau, or any
other approved procedure, conforming to the requirements of the
ASA Code for Pressure Piping. No welder shall be employed on the
work who has not been fully qualified under the above specified
procedure and so certified as a member of the local chapter of the
National Certified Pipe Welding Bureau or similar locally recognized
testing authority.
3.Gas piping to gas-fired boilers shall be the responsibility of the
Plumbing Subcontractor. Gas train vents from boiler header shall
be the responsibility of the HVAC Subcontractor. All high pressure
side gas mains on regulator vents shall be all welded.
2.2 VALVES
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 11 of 44 224000
A.On water lines inside the building, ball valves shall be as manufactured
by Watts Series B6001. Valves shall be provided with stainless steel ball,
reinforced teflon seats and seals, bronze body, 400 psi wog, positive
100% shut-off. All valves to be furnished with valve handle extension
sized to match pipe insulation thickness.
B.Drain valves at all low points shall be 1/2" or 3/4" solder by 3/4" hose
end with attached cap and chain.
C.Gate Valves:
1.Where indicated on the Drawings, all gate valves 4" and larger,
shall be Class 125 iron body bronze mounted with body and
bonnet conforming to 200 psi wog non-shock cast iron, flanged
ends, with Teflon packing, two-piece packing gland assembly,
Hammond Figure 1R1138, Stockman, or equal.
2.Valves 3" and smaller where indicated on the Drawings shall be
Class 125. Body and bonnets shall be of ASTM B62 cast bronze
composition, solid disc, copper silicone alloy stem, brass packing
gland, Teflon packing, and malleable handwheel, solder end,
Stockham Figure B-104, Hammond 1R1138, or equal.
3.Valves shall be as manufactured by Stockham, Hammond,
American Valve, or equal.
D.Balancing Valves:
1.Where indicated on the Drawings, furnish and install balance
circuit setter, with calibrated scale, with bronze body and disc and
connections for differential pressure meter.
2.Balancing valves shall be Bell & Gossett.
E.Check Valves
1.Check valves shall be furnished and installed where indicated on
the Drawings. Checks up to 2" shall be Class 125. Solder ends,
body and caps shall be ASTM B62 cast bronze composition, swing
type disc, Stockham Figure B-309.
2.Check valves 2-1/2" and larger shall be iron body, bronze
mounted with body and cap conforming to ASTM A126, Class B
cast iron, flanged, swing type disc, Stockham Figure G-931.
3.Check valves shall be as manufactured by Stockham, Jenkins,
Lunkenheimer, or equal.
F.Vacuum relief valves shall be Watts Model 36A -3/4".
G.Globe valves shall be as manufactured by Hammond IB-418 or IB-440.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 12 of 44 224000
H.Pressure Reducing Valves
1.Furnish and install where indicated on the Drawings, Ametek/U.S.
Gauge Co.'s Figure P500, 2"diameter, 0 lb. to 100 lbs. pressure
gauges, complete with petcocks and brass connections.
2.Pressure reducing valves shall be as manufactured by Spence, Watts
Regulator Co., A.W. Cash Valve Mfg. Co., Mueller Co., or equal.
3.Furnish and install on water service entrance Spence pressure
reducing valve. The valve body shall be bronze with FDA approved
fused epoxy coating, internal and external. Provide with factory
inlet strainer.
a.Valve shall be rated to reduce the inlet pressure to 55psi
outlet pressure. Valve to be Spence Model D34, size 2”,
manufacturer shall determine proper valve size prior to
ordering. Valve shall be rated for minimum working
pressure of 200psi.
b.Install in parallel with the main valve a Spence Model E, ¾”
pressure reducing valve with inlet and outlet ball valves.
Pressure reducing valve shall be rated for a minimum
working pressure of 200psi. Flow rate shall be 10gpm or
less.
I.Plug Valves: Furnish and install cast iron plug valves on all gas piping 2"
and larger, with flanged ends, Model 133 as manufactured by Serek
Audco, with 100% free area, rated at 125 psi working pressure, or
approved equal by Serek.
2.3 HANGERS
A.Hangers shall be as manufactured by Grinnell Company, Carpenter &
Paterson, or Fee & Mason.
B.For cast iron and galvanized steel piping -Grinnell Company's Figure No.
260, one to each length of cast iron pipe, at 12 ft. intervals for threaded
piping; for copper tubing -Grinnell Co.'s figure CT-65 at 8 ft. intervals for
tubing up to 2"; 10 ft. intervals for tubing 2-1/2" and above.
C.Gas piping shall be supported by steel clevis pipe hangers, one to each 8'-
0" of pipe.
D. For hot, hot water circulating, and cold water piping -Grinnell Company's
figure No. CT-99 heavily copper plated at 6 ft. intervals for copper tubing
1-1/4" or less, 10 ft. intervals for piping 1-1/2" and larger. Provision
shall be made to allow for expansion and contraction of all piping.
E. Hangers or supports shall be placed within 1 ft. of each horizontal elbow.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 13 of 44 224000
Vertical runs of pipe not over 5 ft. in length shall be supported on hangers
placed not over 12" from the elbow on the connecting horizontal run.
F. All vertical piping shall be supported at each story height, with a support
at the base of vertical cast iron pipe.
G. Perforated strap iron hanger or Milford type copper plated steel hangers
are not acceptable.
H. Where piping is supported from ceiling beams, support parallel pipes from
different beams.
I. Support pipes sufficiently clear of all part of structure to allow for full
thickness of insulation.
J.Hangers to be adequate size to include insulation. Furnish and install
galvanized steel insulation protection shields outside of insulation on pipe
sizes 2" and larger to prevent crushing or indenting of insulation of
hangers.
K.Provide plastic coated steel hangers to support vent piping at 6 ft.
intervals.
2.4 TRAPS
A.Traps at fixtures shall be listed in the Fixture Schedule. Exposed traps
shall be chrome plated.
B.Traps shall be service weight cast-iron where buried in floors or serving
floor drains. Where traps are not connected directly under the drain they
serve in the floor, they shall be fitted with top cleanouts and extensions
to the floor with access covers and plates.
C.Furnish and install traps as required for all items of equipment furnished
under other Sections of these Specifications, and/or the Owner.
2.5 CLEANOUTS/ACCESS PANELS
A.Where cleanouts occur in finished floors throughout the building, they
shall be Zurn ZN-1405-2, nickel-bronze for concrete finish floor; Zurn
ZN-1405-7 nickel-bronze recessed for resilient floors; Zurn ZN-1405-7
for ceramic tile floors; ZN-1405-14 for carpeted floors; or equal by J. R.
Smith or Wade.
B.Wall cleanouts shall be brass, recessed head plugs with Zurn ZN-1440-1
access frame and cover.
C.Access covers shall be flush with finished floors and walls. Where floor
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 14 of 44 224000
cleanouts occur above finish floors above grade, they shall be provided
with flange, clamping collar and 24" x 24", 16 oz. copper flashing.
Copper flashing shall be furnished and installed by the Plumbing
Subcontractor.
D.Provide access panels for all concealed inaccessible valves, balancing
fittings, cleanouts, shock absorbers, and trap primers in masonry walls,
plastered walls, plastered or gypsum wallboard ceilings. Access panels
shall be furnished by the Plumbing Subcontractor and installed by
tradesmen of wall or ceiling finish. Access panels in plaster shall be Karp
Type DSC-214 PL (12" x 12" min.); in walls shall be Karp Type DSC-214M
"Universal" (12" x 12"). For drywall ceilings shall be Karp Sesame Slim
Trim Access Hatches, Type KSTDW/CAD (12" x 12" min.).
E.Cleanouts shall be Zurn Industries, Inc., Wade Division, Josam Mfg. Co., Jay
R. Smith Co., or equal.
F.Access panels shall be Karp Associates, Inc., Inryco, Inc., Milcor Division,
Birmingham Ornamental Iron, or equal.
2.6 INSULATION
A.All water piping shall be insulated with Armaflex closed cell pipe insula-
tion with self-sealing lap, 1" thick for hot water, and return hot water
1/2" thick for cold water. Insulation shall be one piece snap-on type.
All exposed piping within 10'-0" of finished floor shall be insulated as
noted above and shall be fully jacketed with a PVC cover.
B.Fittings shall be insulated with mitered cut insulation applied over
fittings with joints taped. Cold water piping shall also have mastic
applied to all overlapping surfaces to form a vapor barrier.
C.Insulation and fitting jackets shall be installed according to the
manufacturer's recommendations. Any gaps or fishmouths shall be
remade.
D.Install a twelve (12") inch length of wood blocking at each hanger;
insulation shall run continuous through the hanger. Jacket shall match
adjacent insulation jacket.
E.All exposed drain and water piping at handicapped lavatories shall be
insulated with Truebro "Handi Lav-Guard", Model 102 w/105 offset or
equal, molded insulation kit.
2.7 THERMOMETERS
A.Thermometers shall be Jay, Moeller, Palmer, Taylor, Trerice, or Weiss,
equal to Trerice 80700 with aluminum case, industrial glass, dial type,
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 15 of 44 224000
4-1/2" diameter, 2oF subdivisions. Stem length shall be sufficient to
assure accurate and fast response, but in no case less than 3-1/2" nor
less than one-third of pipe diameter in which installed. Each
thermometer shall be provided with a brass, monel, or stainless steel
separable socket of matching length, and with lagging extensions when
installed in insulated pipe. Thermometers shall be adjustable angle type,
positioned as required to be easily seen and read from normal operator's
position.
B.Ranges shall be manufacturer's standard closest to the following:
1.Hot water: 30 degrees F –180 degrees F.
2.Cold water: 0 degrees F-100 degrees F.
C.Provide at inlet and outlet of indirect water heaters and at mixing valve.
2.8 PRESSURE GAUGES
A.4-1/2" dial, double spring with soft copper tubing loop and petcock.
Operating range shall be in the center of the scale. To be U.S. Gage Co.,
or approved equal.
B.Provide at water entrance, on both sides of pressure reducing valve.
2.9 WATER HAMMER ARRESTERS
A.Where indicated on the drawings, furnish and install Precision Plumbing
Products, Inc. SC-Series type shock absorbers, sizes as shown on
Drawings, or as required.
2.10 ACCESS PANELS
A.Access panel doors for all concealed inaccessible valves, balancing
fittings, or cleanouts in masonry walls, plastered or gypsum wallboard
walls or ceilings, shall be furnished by the Plumbing Contractor and
installed by tradesmen of wall or ceiling finish. Access panels in
plastered ceilings shall be Karp Type DSC-214 PL (12" x 12" min.); in
walls, shall be Karp type DSC-214M "Universal" (12" x 12"); for drywall
ceilings, shall be Karp Sesame Slim Trim Access Hatches, Type
KSTDW/CAD (12" x 12" min.) with screw driver type lock.
B.Access panels shall be Karp Associates, Inc., Inryco, Inc., Milcor Division,
Birmingham Ornamental Iron, or equal.
2.11 PLUMBING FIXTURES AND FIXTURE TRIMMINGS
A.General Requirements: Reference made herein to numbers of plumbing
fixtures to establish type and quality of materials. Angle stops, straight
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 16 of 44 224000
stops, stops integral with the faucets, or concealed type of lock shield,
loose key pattern stops for supplies shall be furnished and installed with
fixtures. Exposed traps and supply pipes for all fixtures and equipment
shall be chrome plated and connected to the rough piping systems at the
wall. Wall escutcheons shall be chromium plated or nickel plated brass
with polished, bright surfaces.
B.The Plumbing Contractor shall furnish all supports, brackets, bolts, etc.
for proper installation of all fixtures requiring support. They shall be in
accordance with the manufacturer's recommendations, and, if necessary,
shall be built into place as the building progresses. This Contractor shall
be held responsible for the stability and proper support of all plumbing
fixtures.
C.Water Closet (P-1), Residents
1.Closet –Toto “Drake”, Model CST744S,close coupled toilet, high
performance, 1.6 gallons per flush, power assist quiet flush, wide
trapway, vitreous china and 12” rough-in.
2.Seat –Toto SoftClose seat Model #SS204, seat and lid gently close
with a touch of a hand. Elongated, closet front seat with lid.
3.Mounting-Beeswax seal.
D.Lavatory Trim (P-2)
1.Basin –American Standard Cadet Everclean Oval countertop sink,
Model 0419.888EC, 8” centers, self-rimming with front overflow.
2.Faucet –Delta Windemere Bath collection Model 35996LF, chrome
finish, solid brass fabricated end valve and spout, widespread 8”
centers,high rigid spout and pop-up type fitting with plated
flange.
3.Fittings –Provide chrome plated angle stops with riser tubing and
cleanout plug.
4.Trap –Sanitary Dash No. R370-17 polished chrome plated with
cleanout plug.
E.Lavatory (P-2A)
1.Basin –America Standard Tropic Petite countertop lavatory, Model
0403.008, vitreous china, rear overflow, and 8” centers.
2.Faucet –Delta Windemere Bath collection Model 35996LF, chrome
finish, solid brass fabricated end valve and spout, widespread 8”
centers,high rigid spout and pop-up type fitting with plated
flange.
3.Fittings –Provide chrome plated angle stops with riser tubing and
cleanout plug.
4.Trap –Sanitary Dash No. R370-17 polished chrome plated with
cleanout plug.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 17 of 44 224000
F.Tub/Shower Unit (P-3)
1.Tub Basin –American Standard “Americast” Princeton Model
2392.202 or 2393.202, recessed basin, white non-slip.
2.Control valve –Symmons Allura tub and shower system, Model No.
S-4702-X-LR, pressure balancing mixing valve with combination
integral diverter/volume control handle, shower head #4-143, 3
mode flood, mist or pulse spray, 2.5 gpm, tub spout and a
polished chrome finish.
3.Fittings –Gerber Model No. 41-812 waste and overflow.
G.Tub/Shower Unit (P-3A)
1.Tub Basin –American Standard Huron 4’, Model 0131.012 one
piece recessed basin, white non-slip, acid resisting enameled steel
construction.
2.Control valve –Symmons Allura tub and shower system, Model No.
S-4702-X-LR, pressure balancing mixing valve with combination
integral diverter/volume control handle, shower head #4-143, 3
mode flood, mist or pulse spray, 2.5 gpm, tub spout and a
polished chrome finish.
3.Fittings –Gerber Model No. 41-812 waste and overflow.
H.Kitchen Sink (P-4)
1.Basin-Elkay “Lustertone” Model LR-2521, 8” deep bowl, 18 gauge
25” x 21 1/4” O.D. stainless steel, self-rimming sink with 4 hole
punched ledge, sound deadened bottom and cup strainer.
2.Faucet –Delta Windemere Bath Collection Model 21996LF, chrome
finish,two handle kitchen faucet, deck mounted, with hose and
spray, 8” centers, 8” long, 11 5/8” high spout swings 360°, spray
attachment has antisiphon device as integral part of valve body.
3.Fittings –Provide “P” trap and angle stops.
I.Washing Machine Connection (P-6)
1.Symmons Laundry Mate Model W-600-X, supply and drain unit
with 1 ½” drain and water control valve, service stops, and
recessed wall plate.
J.Wall Hydrant (WH)
1.Woodford Model RB67 Series concealed type, automatic draining
with anti-siphon vacuum breaker, ¾” hose thread nozzle, one
piece valve plunger to control both flow and drain functions, loose
tee key to be furnished with each hydrant.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 18 of 44 224000
2.12 TRAP PRIMER
A.Furnish and install automatic trap primer as manufactured by Precision
Plumbing Products Prime Rate Model P1-500, with vacuum breaker and
adjustment screw. Provide trap primer distribution unit when serving
more than on drain.
B.Install trap primers to serve all floor drains and indirect waste in boiler
room, mechanical rooms, and indirect waste piping for A/C condensate
drains, or where indicated.
2.13 ELECTRIC DOMESTIC HOT WATER (72 Dryads)
A.The water heater shall be Gold Series Commercial Electric Model No.
DRE-52-9, as manufactured by A.O. Smith. Heater shall be rated at 9
kW, 240 volts, single phase, 60 cycle AC and listed by Underwriter’
Laboratories and approved to the NSF Standard 5 by UL. Tank shall be
50 gallon and shall have 150 psi working pressure and be equipped with
extruded high density anode. All internal surfaces of the heater exposed
shall be glass lined with an alkaline borosilicate composition that has
been fused to steel by firing at a temperature range of 1400°F to 1600°F.
2.14 WATER METER
A.The Plumbing Contractor shall furnish and install (1) one turbine water
meter per building with remote meter readouts, Neptune, Model TM –1”,
where shown on the drawings.
B.Meters to read in cubic feet and shall be Neptune, Hersey Products, Inc.,
Badger Meter Company, Trident Meter or equal and are to be approved by
the local water department.
2.15 RE-CIRCULATING PUMPS
A.Hot water re-circulating pumps shall be all bronze construction, in-line
type, maximum working temperature of 225 deg. F, maximum working
pressure of 125 psi, Bell and Gossett, or Taco series, or equal. The pump
sizes shall be as scheduled on the Drawings.
B.Hot water generator circulating pumps shall be as follows:
1.CP-1 (1 required for 58 Kensington & 1 for 57 Dryads) shall be Bell
& Gossett Series PR (bronze body) to deliver 5 gpm at 10 ft. head
with 1,725 rpm, 1/6 hp, 120 volt, single phase motor.
C.Each pump shall be controlled by an immersion aquastat installed in 1-
1/4" oversize tee, aquastat provided by the Plumbing Subcontractor,
wired by the Electrical Subcontractor.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 19 of 44 224000
D.Circulating pumps shall be ITT Bell & Gossett Co., Taco, Inc., Grundfos,
Inc., or approved equal.
2.16 THERMOSTATIC MIXING VALVE ASSEMBLY
A.Furnish and install, where indicated on the Drawings, one (1) Watts Model
TM-40 Mixing Valve System, ¾” inlets and 1” outlet, 1.0 gpm minimum flow
capacity, with large type TM Water Mixer, small Type TM Water Mixer,
locking temperature regulator handle, adjustable high temperature limit
stop, inlet check stops, outlet ball valve shutoff. Complete system with inlet
piping manifold shall be rough bronze finish. System may be installed at
any location in the domestic hot water system and will provide full time
standby service should one mixing valve require maintenance.
B.Unit shall be factory assembled and tested.
C.Valves shall be Leonard Valve Company, Bradley Valve Co., or equal.
2.17 BACKFLOW PREVENTERS
A.Furnish and install the following backflow preventers, as manufactured
by Watts Regulator.
B.This Subcontractor shall provide a spare parts repair kit for each 909
reduced pressure backflow preventer, to consist of a repair kit for the
first check, second check, and relief valve.
C.All backflow preventers shall be approved by the Massachusetts State
Plumbing Examiners and shall be installed in strict accordance with
manufacturer's recommendations and instructions, and in accordance
with Regulation 310CMR 22.22.
D.Units shall be Watts Regulator Co., Febco, Division of CMB, Ind., Hersey
Products, Inc., or equal.
E.The Plumbing Subcontractor shall file and prepare all applications for
backflow preventer approval with the Department of Environmental
Protection, and pay all fees and charges.
F.All certificates of approval and test results shall be sent to the Architect.
2.18 GAS SERVICE
A.Apply for, and pay all fees and charges in connection with, and co-ordinate
the installation of the new natural gas service.
B.All labor and materials required for a complete installation which are not
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 20 of 44 224000
furnished by the utility company shall be furnished by the Plumbing
Subcontractor at no extra cost to the Owner.
C.The natural gas service will be furnished by Columbia Gas Co.
2.19 VIBRATION AND SEISMIC CONTROL
A.Intent:
1.All mechanical equipment, piping and ductwork as noted on the
equipment schedule or in the Specification shall be mounted on
vibration isolators and with flexible connections to prevent the
transmission of vibration and mechanically transmitted sound to
the building structure. Vibration isolators shall be selected in
accordance with the weight distribution so as to produce
reasonably uniform deflections. All fire protection vibration and
seismic control shall meet NFPA requirements.
2.All isolators and isolation materials shall be of the same
manufacturer and shall be certified by the manufacturer.
3.It is the intent of the seismic portion of Specification to keep all
mechanical building system components in place during a seismic
event.
4.All such systems must be installed in strict accordance with
seismic codes, component manufacturer’s and building
construction standards. Whenever a conflict occurs between the
manufacturers or construction standards, the most stringent shall
apply.
5.This Specification is considered to be minimum requirements for
seismic consideration and is not intended as a substitute for
legislated, more stringent, national, state or local construction
requirements (i.e. California Title 24, California OSHPD, Canadian
Building Codes, or other requirements).
6.Any variance or non-compliance with these Specification
requirements shall be corrected by the Contractor in an approved
manner.
7.Seismic restraints shall be designed in accordance with seismic
force levels as detailed in Section H.
B.The work in this Section includes, but is not limited to, the following:
1.Vibration isolation for piping, ductwork and equipment.
2.Equipment isolation bases.
3.Flexible piping connections.
4.Seismic restraints for isolated equipment.
5.Seismic restraints for non-isolated equipment.
6.Certification of seismic restraint designs and installation
supervision.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 21 of 44 224000
7.Certification of seismic attachment of housekeeping pads.
8.All mechanical systems. Equipment buried underground is
excluded but entry of services through the foundation wall is
included. Equipment referred to below is typical. (Equipment not
listed is still included in this Specification).
·Air Separators
·Battery Racks
·Compressors
·Comp. Room Units
·Conduit
·Electrical Panels
·Piping
·Pumps (All types)
·Tanks (All types)
C.Definitions:
1.Life Safety Systems
a.All systems involved with fire protection including sprinkler
piping, fire pumps, jockey pumps, fire pump control
panels, service water supply piping, water tanks, fire
dampers and smoke systems.
b.All systems involved with and/or connected to emergency
power supply including all generators, transfer switches,
transformers and all flowpaths to fire protection and/or
emergency lighting systems.
c.All medical and life support systems
d.Fresh air relief systems on emergency control sequence
including air handlers, conduit, duct, dampers, etc.
e.All life safety equipment has an asterisk on the equipment
schedule.
2.Positive Attachment:
a.A positive attachment is defined as a cast-in anchor, a
drill-in wedge anchor, a double sided beam clamp loaded
perpendicular to a beam, or a welded or bolted connection
to structure. Single sided “C” type beam clamps for support
rods of overhead piping, ductwork, or any other equipment
are not acceptable on this project as seismic anchor points.
3.Transverse Bracing:
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 22 of 44 224000
a.Restraint(s) applied to limit motion perpendicular to the
centerline of the pipe, duct or conduit.
4.Longitudinal Bracing:
a.Restraint(s) applied to limit motion parallel to the centerline
of the pipe, duct or conduit.
D.Manufacturer’s Data:
1.The manufacturer of vibration isolation and seismic restraints shall
provide submittals for products as follows:
a.Descriptive Data:
(1)Catalog cuts or data sheets on vibration isolators and
specific restraints detailing compliance with the
Specification.
(2)Detailed schedules of flexible and rigidly mounted
equipment, showing vibration isolators and seismic
restraints by referencing numbered descriptive
Drawings.
b.Shop Drawings:
(1)Submit fabrication details for equipment bases
including dimensions, structural member sizes and
support point locations.
(2)Provide all details of suspension and support for
ceiling hung equipment.
(3)Where walls, floors,slabs or supplementary steel
work are used for seismic restraint locations, details
of acceptable attachment methods for ducts, conduit
and pipe must be included and approved before the
condition is accepted for installation. Restraint
manufacturer’s submittals must include spacing,
static loads and seismic loads at all attachment and
support points.
(4)Provide specific details of seismic restraints and
anchors; include number, size and locations for each
piece of equipment.
c.Seismic Certification and Analysis:
(1)Seismic restraint calculations must be provided for
all connections of equipment to the structure.
Calculations must be stamped by a registered
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 23 of 44 224000
professional engineer with at least five years of
seismic design experience, licensed in the state of
the job location.
(2)All restraining devices shall have a pre-approval
number from California OSHPD or some other
recognized government agency showing maximum
restraint ratings. Pre-approvals based on
independent testing are preferred to pre-approvals
based on calculations. Where pre-approved devices
are not available, submittals based on independent
testing are preferred. Calculations (including the
combining of tensile and shear loadings) to support
seismic restraint designs must be stamped by a
registered professional engineer with at least five
years of seismic design experience and licensed in
the state of the job location. Testing and calculations
must include both shear and tensile loads as well as
one test or analysis at 458 to the weakest mode.
(3)Analysis must indicate calculated dead loads, static
seismic loads and capacity of materials utilized for
connections to equipment and structure. Analysis
must detail anchoring methods, bolt diameter,
embedment and/or welded length. All seismic
restraint devices shall be designed to accept, without
failure, the forces detailed in Section H acting
through the equipment center of gravity.
Overturning moments may exceed forces at ground
level.
E.Code and Standards Requirements:
1.Typical Applicable Codes and Standards -most recent or enforced
code:
a.Massachusetts State Building Code.
b.BOCA National Mechanical Code.
c.NFPA 90A.
F.Manufacturer’s Responsibility:
1.Manufacturer of vibration isolation and seismic control equipment
shall have the following responsibilities:
a.Determine vibration isolation and seismic restraint sizes
and locations.
b.Provide vibration isolation and seismic restraints as
scheduled or specified.
c.Provide calculations and materials if required for restraint
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 24 of 44 224000
of unisolated equipment.
d.Provide installation instructions, drawings and trained field
supervision to insure proper installation and performance.
G.Related Work:
1.Housekeeping Pads:
a.Housekeeping pad reinforcement and monolithic pad
attachment to the structure details and design shall be
prepares by the restraint vendor if not already indicated on
the Drawings.
b.Housekeeping pads shall be coordinated with restraint
vendor and sized to provide a minimum edge distance of
ten (10) bolt diameters all around the outermost anchor
bolt to allow development of full drill-in wedge anchor
ratings. If cast-in anchors are to be used, the housekeeping
pads shall be sized to accommodate the ACI requirements
for bolt coverage and embedment.
2.Supplementary Support Steel:
a.Contractor shall supply supplementary support steel for all
equipment, piping, ductwork, etc. including roof mounted
equipment, as required or specified.
3.Attachments:
a.Contractor shall supply restraint attachment plates cast into
housekeeping pads, concrete inserts, double sided beam
clamps, etc. in accordance with the requirements of the
vibration vendor’s calculations.
H.Seismic Force Levels
1.The following force levels will be used on this project.
Minimum “G” Forces Equal to or Exceeding Building Code Listed in E.
Building
Code
“G” Force
for all pipes, Duct
& Conduit
“G” Force
for Rigidity
Mounted
Equipment
“G” Force
for Flexibility
Mounted
Equipment
“G” Force For
Life Safety
Equipment Either
Rigidity or
Flexibility
Mounted
Zon
e
Horiz. Vert.
Horiz. Vert.
Horiz. Vert.
Horiz. Vert.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 25 of 44 224000
UBC * ** ** ** *
BOCA
SBCCI
.25 .08 0.4 0.15 0.1 0.15 0.6 0.2
I.Product Intent:
1.All vibration isolators and seismic restraints described in this
section shall be the product of a single manufacturer. Mason
Industry’s products are the basis of these Specifications; products
of other manufacturers are acceptable provided their systems
strictly comply with the Specifications and have the approval of
the specifying engineer. Submittals and certification sheets shall
be in accordance with Section D.
2.For the purposes of this project, failure is defined as the
discontinuance of any attachment point between equipment or
structure, vertical permanent deformation greater than 1/8 in.
and/or horizontal permanent deformation greater than 1/4 in.
J.Product Description: Vibration Isolators and Seismic Restraints:
1.Two (2) layers of 3/4 in. thick neoprene pad consisting of 2 in.
square waffle modules separated horizontally by a 16 gauge
galvanized shim. Load distribution plates shall be used as
required. Pads shall be Type Super “W” as manufactured by Mason
Industries, Inc.
2.Bridge-bearing neoprene mountings shall have a minimum static
deflection of 0.2 in. and all directional seismic capability. The
mount shall consist of a ductile iron casting containing two
separated and opposing molded neoprene elements. The elements
shall prevent the central threaded sleeve and attachment bolt from
contacting the casting during normal operation. The shock
absorbing neoprene materials shall be compounded to bridge-
bearing Specifications. Mountings shall have an Anchorage Pre-
approval “R” Number from OSHPD in the State of California
verifying the maximum certified horizontal and vertical load
ratings. Mountings shall be Type BR as manufactured by Mason
Industries, Inc.
3.Sheet metal panels shall be bolted to the walls or supporting
structure by assemblies consisting of a neoprene bushing
cushioned between 2 steel sleeves. The outer sleeve prevents the
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 26 of 44 224000
sheet metal from cutting into the neoprene. Enlarge panel holes
as required. Neoprene elements pass over the bushing to cushion
the back panel horizontally. A steel disc covers the inside
neoprene element and the inner steel sleeve is elongated to act as
a stop so tightening the anchor bolts does not interfere with panel
isolation in three (3) planes. Bushing assemblies can be applied to
the ends of steel cross members where applicable. All assemblies
shall be Type PB as manufactured by Mason Industries, Inc.
4.A one piece molded bridge bearing neoprene washer/bushing.
The bushing shall surround the anchor bolt and have a flat face to
avoid metal to metal contact. Neoprene bushings shall be Type HG
as manufactured by Mason Industries, Inc.
5.Spring isolators shall be free standing and laterally stable without
any housing and complete with a molded neoprene cup or 1/4 in.
neoprene acoustical friction pad between the baseplate and the
support. All mountings shall have leveling bolts that must be
rigidly bolted to the equipment. Spring diameters shall be no less
than 0.8 if the compressed height of the spring at rated load.
Springs shall have a minimum additional travel to solid equal to
50% of the rated deflection. Submittals shall include spring
diameters, deflection, compressed spring height and solid spring
height. Mountings shall be Type SLF as manufactured by Mason
Industries, Inc.
6.Restrained spring mountings shall have an SLF mounting as
described in Specification 5, within a rigid housing that includes
vertical limit stops to prevent spring extension when weight is
removed. The housing shall serve as blocking during erection. A
steel spacer shall be removed after adjustment. Installed and
operating heights are equal. A minimum clearance of 1/2 in. shall
be maintained around restraining bolts and between the housing
and the spring so as not to interfere with the spring action. Limit
stops shall be out of contact during normal operation. Since
housings will be bolted or welded in position there must be an
internal isolation pad. Housing shall be designed to resist all
seismic forces. Mountings shall have Anchorage Pre-approval “R”
Number from OSHPD in the state of California certifying the
maximum certified horizontal and vertical load ratings. Mountings
shall be SLR as manufactured by Mason Industries, Inc.
7.Spring mountings as in Specification 5 built into a ductile iron or
steel housing to provide all directional seismic snubbing. The
snubber shall be adjustable vertically and allow a maximum if 1/4
in. travel in all directions before contacting the resilient snubbing
collars. Mountings shall have an Anchorage Pre-approval “R”
Number from OSHPD in the State of California verifying the
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 27 of 44 224000
maximum certified horizontal and vertical load ratings. Mountings
shall be SSLFH as manufactured by Mason Industries, Inc.
8.Air Springs shall be manufactured with upper and lower steel
sections connected by a replaceable flexible nylon reinforced
neoprene element. Air spring configuration shall be multiple
bellows to achieve a maximum natural frequency of 3 Hz. Air
Springs shall be designed for a burst pressure that is a minimum
of three times the published maximum operating pressure. All air
spring systems shall be connected to either the building control
air or a supplementary air supply and equipped with three (3)
leveling valves to maintain leveling within plus or minus 1/8 in.
Submittals shall include natural frequency, load and damping tests
performed by an independent lab or acoustician. Air Springs shall
be Type MT and leveling valves Type LV as manufactured by
Mason Industries, Inc.
9.Restrained air spring mountings shall have an MT air spring as
described in Specification 8, within a rigid housing that includes
vertical limit stops to prevent air spring extension when weight is
removed. The housing shall serve as blocking during erection. A
steel spacer shall be removed after adjustment. Installed and
operating heights are equal. A minimum clearance of 1.2 in. shall
be maintained around restraining bolts and between the housing
and the air spring action. Limit stops shall be out of contact
during normal operation. Housing shall be designed to resist all
seismic forces. Mountings shall be SLR-MT as manufactured by
Mason Industries, Inc.
10.Hangers shall consist of rigid steel frames containing minimum 1-
1/4 in. thick neoprene elements at the top and a steel spring with
general characteristics as in Specification 5 seated in a steel
washer reinforced neoprene cup on the bottom. The neoprene
element and the cup shall have neoprene bushings projecting
through the steel box. To maintain stability the boxes shall not be
articulated as clevis hangers or the neoprene element stacked on
top of the spring. Spring diameters and hanger box lower hole
sizes shall be large enough to permit the hanger rod to swing
through a 308 arc from side to side before contacting the rod
bushing and short circuiting the spring. Submittals shall include a
hanger Drawing showing the 308 capability. Hangers shall be Type
30N as manufactured by Mason Industries, Inc.
11.Hangers shall be as described in 10, but they shall be
precompressed and locked at the rated deflection by means of a
resilient seismic upstop to keep the piping or equipment at a fixed
elevation during installation. The hangers shall be designed with a
release mechanism to free the spring after the installation is
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 28 of 44 224000
complete and the hanger is subjected to its full load. Deflection
shall be clearly indicated by means of a scale. Submittals shall
include a Drawing of the hanger showing the 30 degree capability.
Hangers shall be Type PC30N as manufactured by Mason
Industries, Inc.
12.Seismic Cable Restraints shall consist of galvanized steel aircraft
cables sized to resist seismic loads with a minimum safety factor
of two (2) and arranged to provide all-directional restraint. Cable
end connections shall be steel assemblies that swivel to final
installation angle and utilize two (2) clamping bolts to provide
proper cable engagement. Cables must not be allowed to bend
across sharp edges. Cable assemblies shall have an Anchorage
Pre-approval “R” Number from OSHPD in the State of California
verifying the maximum certified load ratings. Cable assemblies
shall be Type SCB at the ceiling and at the clevis bolt, SCBH
between the hanger rod nut and the clevis or SCBV if clamped to a
beam all as manufactured by Mason Industries, Inc.
13.Seismic solid braces shall consist of steel angles or channels to
resist seismic loads with a minimum safety factor of 2 and
arranged to provide all directional restraint. Seismic solid brace
end connectors shall be steel assemblies that swivel to the final
installation angle and utilize two through bolts to provide proper
attachment. Seismic solid brace assembly shall have anchorage
preapproval “R” Number from OSHPD in the state of California
verifying the maximum certified load ratings. Solid seismic brace
assemblies shall be Type SSB as manufactured by Mason
Industries, Inc.
14.Steel angles, sized to prevent buckling, shall be clamped to pipe
or equipment rods utilizing a minimum of three ductile iron
clamps at each restraint location when required. Welding of
support rods is not acceptable. Rod clamp assemblies shall have
an Anchorage Pre-approval “R” Number from OSHPD in the State
of California. Rod clamp assemblies shall be Type SRC as
manufactured by Mason Industries, Inc.
15.Pipe clevis cross bolt braces are required in all restraint locations.
They shall be special purpose performed channels deep enough to
be held in place by bolts passing over the cross bolt. Clevis cross
braces shall have an Anchorage Pre-approval “R”Number from
OSHPD in the State of California. Clevis cross brace shall be Type
CCB as manufactured by Mason Industries, Inc.
16.All-directional seismic snubbers shall consist of interlocking steel
members restrained by a one-piece molded neoprene bushing of
bridge bearing neoprene. Bushing shall be replaceable and a
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 29 of 44 224000
minimum of 1/4 in. thick. Rated loadings shall not exceed 1000
psi. A minimum air gap of 1/8 in. shall be incorporated in the
snubber design in all directions before contact is made between
the rigid and resilient surfaces. Snubber end caps shall be
removable t allow inspection of internal clearances. Neoprene
bushings shall be rotated to insure no short circuits exist before
systems are activated. Snubbers shall have an Anchorage Pre-
approval “R” Number from OSHPD in the State of California
verifying the maximum certified horizontal and vertical load
ratings. Snubber shall be Type Z-1225 as manufactured by Mason
Industries, Inc.
17.All directional seismic snubbers shall consist of interlocking steel
members restrained by shock absorbent rubber materials
compounded to bridge bearing Specifications. Elastomeric
materials shall be replaceable and a minimum of 3/4 in. thick.
Rated loadings shall not exceed 1000 psi. Snubbers shall be
manufactured with air gap between hard and resilient material of
nor less than 1/8 in. nor more than 1/4 in. Snubbers shall be
installed with factory set clearances. The capacity of the seismic
snubber at 3/8 in. deflection shall be equal or greater than the
load assigned to the mounting grouping controlled by the
snubber multiplied by the applicable “G” force. Submittals shall
include the load deflection in the x, y and z planes. Snubbers shall
have an anchorage pre-approval “R”Number from OSHPD in the
State of California verifying the maximum certified horizontal and
vertical load ratings. Snubbers shall be series Z-1011 as
manufactured by Mason Industries, Inc.
18.Stud wedge anchors shall be manufactured from full diameter
wire, not from undersized wire that is “rolled up” to create the
thread. The stud anchor shall also have a safety shoulder, which
fully supports the wedge ring under load. The stud anchors shall
have an evaluation report number from the I.C.B.O. Evaluation
Service, Inc. verifying its allowable loads. Drill-in stud edge
anchors shall be Type SAS as manufactured by Mason Industries,
Inc.
19.Female wedge anchors are preferred in floor locations so isolators
or equipment can be slid into place after the anchors are installed.
Anchors shall be manufactured from full diameter wire, and shall
have a safety shoulder to fully support the wedge ring under load.
Female wedge anchors shall have an evaluation report number
from I.C.B.O. Evaluation Service, Inc. verifying to its allowable
loads. Drill-in female wedge anchors shall be Type SAB as
manufactured by Mason Industries, Inc.
20.Vibration isolation manufacturer shall furnish rectangular steel
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 30 of 44 224000
concrete pouring forms for floating and inertia foundations. Bases
for split case pumps shall be large enough to provide for suction
and discharge of elbows. Bases shall be a minimum of 1/12 of the
longest dimension of the base but not less than 6 in. The base
depth need not exceed 12 in. unless specifically recommended by
the base manufacturer for mass or rigidity. Forms shall include
minimum concrete reinforcing consisting of 1/2 in. bars welded in
place on 6 in. centers running both ways in a layer 1-1/2 in.
above the bottom. Forms shall be furnished with steel templates
to hold the anchor bolt sleeves and anchors while concrete is
being poured. Height saving brackets shall be employed in all
mounting locations to maintain a 1 in. clearance below the base.
Wooden formed bases leaving a concrete rather than a steel finish
are not acceptable. Base shall be Type BMK o K as manufactured
by Mason Industries, Inc.
21.Curb mounted rooftop equipment shall be mounted on spring
isolation curbs. The lower member shall consist of a sheet metal Z
section containing adjustable and removable steel springs that
support the upper floating section. The upper frame must provide
continuous support for the equipment and must be captive so as
to resiliently resist wind and seismic forces. All directional
neoprene snubber bushings shall be a minimum of 1/4 in. thick.
Steel springs shall be laterally stable and rest on 1/4 in. thick
neoprene acoustical pads. Hardware must be plated and the
springs provided with a rust resistant finish. The curbs
waterproofing shall consist of a continuous galvanized flexible
counter flashing nailed over the lower curbs waterproofing and
joined at the corners by EPDM bellows. All spring locations shall
have access ports with removable waterproof covers. Lower curbs
shall have provision for 2 in. of insulation. The roof curbs shall be
built to seismically contain the rooftop unit. The unit must be
solidly fastened to the top floating rail, and the lower Z section
anchored to the roof structure. Curb shall have anchorage pre-
approval “R” from OSHPD in the State of California attesting to the
maximum certified horizontal and vertical load ratings. Curb shall
be Type RSC as manufactured by Mason Industries, Inc.
22.Flexible spherical piping connectors shall employ peroxide cured
EPDM in the covers, liners and Dacron tire cord frictioning. Solid
steel rings shall be used within the raised face rubber ends to
prevent pullout. Flexible cable bead wire is not acceptable. Sizes 2
in. and larger shall have two spheres reinforced with a ring
between spheres to maintain shape and complete with split ductile
iron or steel flanges with hooked or similar interlocks. Sizes 16 in.
to 24 in. may be single sphere. Sizes 3/4 in. to 1-1/2 in. may
have threaded bolted flange assemblies, one sphere and cable
retention. 14 in. and smaller connectors shall be rated at 250 psi
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 31 of 44 224000
up to 1908 F with a uniform drop in allowable pressure to 190 psi
at 2508 F. 16 in. and larger connectors are rated 180 psi at 1908 F
and 135 psi at 2508 F. Safety factors to burst and flange pullout
shall be a minimum of 3/1. All joints must have permanent
markings verifying a 5 minute factory test at twice the rated
pressure. Concentric reducers to the above Specifications may be
substituted for equal ended expansion joints.
Pipe connectors shall be installed in piping gaps equal to the
length of the expansion joints under pressure. Control rods need
only be used in unanchored piping locations where the
manufacturer determines the installation exceeds the pressure
requirement without control rods, as control rods are not
desirable in seismic work. If control rods are used, they must have
1/2 in. thick Neoprene washer bushings large enough in area to
take the thrust at 1000 psi maximum on the washer area.
Expansion joints shall be installed on the equipment side of the
shut off valves.
Submittals shall include two (2) test reports by independent
consultants showing minimum reductions of 20 DB in vibration
accelerations and 10 DB in sound pressure levels at typical blade
passage frequencies on this or a similar product by the same
manufacturer. All expansion joints shall be installed on the
equipment side of the shut off valves. Expansion joints shall be
SAFEFLEX SFDEJ, SFEJ, SFDCR or SFU and Control Rods CR as
manufactured by Mason Industries, Inc.
23.Flexible stainless steel hose shall have stainless steel braid and
carbon steel fittings. Sizes 3 in. and larger shall be flanged.
Smaller sizes shall have male nipples. Minimum lengths shall be as
tabulated:
Flanged Male Nipples
3 x 14 10 x 26 1/2 x 9 1-1/2 x 13
4 x 15 12 x 28 3/4 x 10 2 x 14
5 x 19 14 x 30 1 x 11 2-1/2 x 18
6 x 20 16 x 32 1/4 x 12
Hoses shall be installed on the equipment side of the shut-off
valves horizontally and parallel to the equipment shafts wherever
possible. Hoses shall be Type BSS as manufactured by Mason
Industries, Inc.
24.All-directional acoustical pipe anchor, consisting of two sizes of
steel tubing separated by a minimum 1/2 in. thick 60 durometer
neoprene. Vertical restraint shall be provided by similar material
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 32 of 44 224000
arranged to prevent vertical travel in either direction. Allowable
loads on the isolation material should not exceed 500 psi and the
design shall be balanced for equal resistance in any direction. All-
directional anchors shall be Type ADA as manufactured by Mason
Industries, Inc.
25.Pipe guides shall consist of a telescopic arrangement of two sizes
of steel tubing separated by a minimum 1/2 in. thickness of 60
durometer neoprene. The height of the guides shall be preset with
a shear pin to allow vertical motion due to pipe expansion or
contraction. Shear pin shall be removable and reinsertable to allow
for selection of pipe movement. Guides shall be capable of 6 1-
5/8 in. motion, or to meet location requirements. Pipe guides
shall be Type VSG as manufactured by Mason Industries, Inc.
26.Split Wall Seals consists of two bolted pipe halves with minimum
3/4 in. thick neoprene sponge bonded to the inner faces. The seal
shall be tightened around the pipe to eliminate clearance between
the inner sponge face and the piping. Concrete may be packed
around the seal to make it integral with the floor, wall or ceiling if
the seal is not already in place around the pipe prior to the
construction of the building member. Seals shall project a
minimum of 1 in. past either face of the wall. Where temperatures
exceed 240 dig. F., 10 lb. density fiberglass may be used in lieu of
the sponge. Seals shall be Type SWS as manufactured by Mason
Industries, Inc.
27.The horizontal thrust restraint shall consist of a spring element in
series with a neoprene molded cup as described in Specification 5
with the same deflection as specified for the mountings or
hangers. The spring element shall be designed so it can be preset
for thrust at the factory and adjusted in the field to allow for a
maximum of 1/4 in. movement at start and stop. The assembly
shall be furnished with one (1) rod and angle brackets for
attachment to both the equipment and the duct work or the
equipment and structure. Horizontal restraints shall be attached at
the centerline of thrust and symmetrical on either side of the unit.
Horizontal thrust restraints shall be Type WBI/WBD as
manufactured by Mason Industries, Inc.
K.Execution -General:
1.All vibration isolators and seismic restraint systems must be
installed in strict accordance with the manufacturer’s written
instruction and all certified submittal data.
2.Installation of vibration isolators and seismic restraints must not
cause any change of position of equipment, piping or duct work
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 33 of 44 224000
resulting in stresses or misalignment.
3.No rigid connections between equipment and the building
structure shall be made that degrades the noise and vibration
control system herein specified.
4.The Contractor shall not install any equipment, piping, duct or
conduit which makes rigid connections with the building unless
isolation is not specified. “Building” includes, but is not limited to,
slabs, beams, columns, studs and walls.
5.Coordinate work with other trades to avoid rigid contact with the
building.
6.Any conflicts with other trades which will result in rigid contact
with equipment or piping due to inadequate space or other
unforeseen conditions should be brought to the
architects/engineers attention prior to installation. Corrective
work necessitated by conflicts after installation shall be at the
responsible Contractor’s expense.
7.Bring to the architects/engineers attention any discrepancies
between the Specifications and the field conditions or changes
required due to specific equipment selection, prior to installation.
Corrective work necessitated by discrepancies after installation
shall be at the responsible Contractor’s expense.
8.Correct, at no additional cost, all installations, which are deemed
defective in workmanship and materials at the Contractor’s
expense.
9.Overstressing of the building structure must not occur because of
overhead support of equipment. Contractor must submit loads to
the structural engineer of record for approval. Generally bracing
may occur from:
a.Flanges of structural beams.
b.Upper truss cords in bar joist construction.
c.Cast in place inserts or wedge type drill-in concrete
anchors.
10.Specification 12 cable restraints shall be installed slightly slack to
avoid short circuiting the isolated suspended equipment, piping or
conduit.
11.Specification 12 cable assemblies are installed taut on non-
isolated systems. Specification 13 seismic solid braces may be
used in place of cables on rigidly attached systems only.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 34 of 44 224000
12.At locations where Specification 12 or 13 restraints are located,
the support rods must be braced when necessary to accept
compressive loads with Specification 14 braces.
13.At all locations where Specification 12 or 13 restraints are located,
the support rods must be braced when necessary to accept
compressive loads with Specification 14 braces.
14.Drill-in concrete anchors for ceiling and wall installation shall be
Specification type 18, and Specification type 19 female wedge type
for floor mounted equipment.
15.Vibration isolation manufacturer shall furnish integral structural
steel bases as required. Independent steel rails are not permitted
on this project.
16.Hand built elastomeric expansion joints may be used when pipe
sizes exceed 24 in. or specified movements exceed Specification
23 capabilities.
17.Where piping passes through walls, floors or ceilings the vibration
isolation manufacturer shall provide Specification 27 wall seals.
18.Air handling equipment and centrifugal fans shall be protected
against excessive displacement, which results from high air thrust
in relation to the equipment weight. Horizontal thrust restraint
shall be Specification type 28 (see selection guide).
19.Locate isolation hangers as near to the overhead support structure
as possible.
L.Vibration Isolation of Piping:
1.Horizontal Pipe Isolation: The first three (3) pipe hangers in the
main lines near the mechanical equipment shall be as described in
Specification 11. Specification 11 hangers must also be used in all
transverse braced isolated locations. Brace hanger rods with SRC
clamps Specification 14. Horizontal runs in all other locations
throughout the building shall be isolated by hangers as described
in Specification 10. Floor supported piping shall rest on isolators
as described in Specification 6. Heat exchangers and expansion
tanks are considered part of the piping run. The first three-(3)
isolators from the isolated equipment will have the same static
deflection as specified for the mountings under the connected
equipment. If piping is connected to equipment located in
basements and hangs from ceilings under occupied spaces the
first three hangers shall have 0.75 in. deflection for pipe sizes up
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 35 of 44 224000
to and including 3 in., 1-1/2 in. deflection for pipe sizes up to
and including 6 in., and 2-1/2 in. deflection thereafter. Hangers
shall be located as close to the overhead structure as practical.
Where piping connects to mechanical equipment install
Specification 23 flexible piping connection or Specification 24
stainless steel hoses is 23 is not suitable for the service.
2.Riser Isolation: Risers shall be suspended from Specification 10
hangers or supported by Specification 5 mountings, anchored with
Specification 25 anchors, and guided with Specification 26 sliding
guides. Steel springs shall be a minimum of 0.75 in. except in
those expansion locations where additional deflection is required
to limit load changes to 6 25% of the initial load. Submittals must
include riser diagrams and calculations showing anticipated
expansion and contraction at each support point, initial and final
changes and seismic loads. Submittal data shall include
certification that the riser system has been examined for excessive
stresses and that none will exist in the proposed design.
M.Seismic Restraint of Piping:
1.Seismically restrain all piping listed as a, b or c below. Use
Specification 12 cables if isolated. Specification 12 or 13 restraints
may be used on unisolated piping.
a.Fuel oil piping, gas piping, medical gas piping, and
compressed air piping that is 1 in. I.D. or larger.
b.Piping located in boiler rooms, mechanical equipment (fan)
rooms, and refrigeration equipment rooms that is 1-1/4 in.
I.D. and larger.
c.All other piping 2-1/2 in. diameter and larger.
2.Transverse piping restraints shall be at 40’ maximum spacing for
all pipe sizes, except where lesser spacing is required to limit
anchorage loads.
3.Longitudinal restraints shall be at 80’ maximum spacing for all
pipe sizes, except where lesser spacing is required to limit
anchorage loads.
4.Where thermal expansion is a consideration, guides and anchors
may be used as transverse and longitudinal restraints provided
they have a capacity equal to or greater than the restraint loads in
addition to the loads induced by expansion or contraction.
5.For fuel oil and all gas piping transverse restraints must be at 20-
ft. maximum and longitudinal restraints at 40-ft. maximum
spacing.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 36 of 44 224000
6.Transverse restraint for one (1) pipe section may also act as a
longitudinal restraint for a pipe section of the same size
connected perpendicular to it if the restraint is installed within
allowable limits at longer distances.
7.Hold down clamps must be used to attach pipe to all trapeze
members before applying restraints in a manner similar to clevis
supports.
8.Branch lines may not be used to restrain main lines.
9.Cast-iron pipe of all types, glass pipe and any other pipes joined
with a four band shield and clamp assembly in Zones 2B, 3 and 4
shall be braced as in sections 3.02.C.2 and 3. For Zones 0, 1 and
2A, 2 band clamps may be used with reduced spacing of 1/2 of
those listed in sections 3.02.C2 and 3.
N.All mechanical equipment shall be vibration isolated and seismically
restrained as per the schedules in paragraph S of this Specification.
O.Seismic Restraint Exclusions:
1.Piping:
a.All piping less than 2-1/2 in. in diameter except those
listed below.
b.All gas piping and medical gas piping less than 1 in. I.D.
c.All piping in boiler and mechanical equipment rooms less
than 1-1/4 in. I.D.
d.All clevis or trapeze supported piping suspended from
hanger rods where the point of attachment is less than the
12 in. in length from the structure to the structural
connection of the clevis or trapeze.
e.All PVC and fiberglass suspended waste or vent pipe 6 in. in
diameter and smaller.
P.Suspended Equipment:
1.Suspended equipment weighing less than 50 lbs. and supported
with a minimum of 4 hanger rods.
Q.Schedules:
Vibration Isolation and / or
Seismic Restraint
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 37 of 44 224000
Equipment Schedule Specification Static
Deflection
Pumps –Base Mounted 1, 4, 18, 23
Pumps –In-Line 23
PART 3 -EXECUTION
3.1 SOIL, WASTE, DRAIN AND VENT PIPING
A.Installation:
1.Drainage and Vent Pipes: Horizontal soil, rain leaders and
waste pipes shall have a minimum grade of 1/4" per foot for
piping 3" and less and 1/8" per foot for piping larger than 3".
Horizontal waste lines receiving the discharge from two or more
fixtures shall be provided with end vents unless separate
venting of fixtures is noted.
2.Fittings: Changes in pipe size on soil, waste, and drain lines
shall be made with reducing fittings. Changes in direction shall
be made by the appropriate use of 45o wyes, long or short
sweep 1/4 bends, 1/6, 1/8, or 1/16 bends, or by a
combination of those or equivalent fittings. Single and double
sanitary tees and 1/4 bends may be used in drainage lines only
where the direction of flow is from horizontal to vertical.
3.Union Connections: Slip joints will be permitted only in trap
seals or on the inlet side of the traps. Use of bushings will not
be permitted.
B.Joints: Installation of pipe and fittings shall be made in accordance
with the manufacturer's recommendations. Mitering of joints for
elbows and notching of straight runs of pipe for tees will not be
permitted. Threaded joints shall have American National taper pipe
threads conforming to National Bureau of Standards Handbook H28,
with graphite or inert filler and oil, with an approved graphite
compound, or with polytetrafluorethylene tape applied to the male
threads.
3.2 INSTALLATION OF SEWER PIPE
A.Bedding for the pipe shall provide full and stable support, with
recesses excavated for pipe bells. All pipe shall be laid to the
specified line and grade, with a firm bearing throughout each length
and with the bell ends uphill.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 38 of 44 224000
B.Pipe Joints: The flexible water tight rubber gaskets shall be installed
in accordance with the directions of the manufacturer.
C.Plastic Pipe: Install plastic piping in accordance with manufacturer's
instructions. At minimum, envelope all PVC pipe in 6" of screened
gravel. Clear interior of conduit of dirt and debris as work progresses.
Maintain swab or drag in line and pull past each joint as it is
completed.
D.Joint Adapters: Make joints between PVC pipe and other type of pipe
with standard manufactured PVC adapters and fittings.
E.Lay conduit beginning at low point of system, true to grades and
alignment indicated with unbroken continuity of invert.
3.3 WATER PIPE FITTINGS AND CONNECTIONS
A.Mains, Branches and Runoffs: Piping shall be installed as indicated.
Pipe shall be cut accurately to measurements established at the
building by the Plumbing Contractor and shall be worked into place
without springing or forcing. Care shall be taken not to weaken
structural portions of the building. Above ground piping shall be run
parallel with the lines of the building unless otherwise indicated.
Branch pipes from service lines may be taken from top, bottom or side
of main, using such crossover fittings as may be required by structural
or installation conditions. Supply pipes, valves and fittings shall be
kept a sufficient distance from other work and other services to permit
not less than 1/2" between finished covering on the different services.
B.All interior water piping shall be installed without traps or pockets and
shall pitch to draw-offs so that the whole system or individual
sections can be properly drained.
C.Piping shall be sloped to allow for complete drainage of the system
with drain valves in all low points not capable of being drained by
gravity.
D.All draw-off valves shall have hose end which shall be capped.
E.Piping shall be pitched up toward risers and fixtures for proper air
relief.
F.Expansion and Contraction of Pipe: Allowance shall be made
throughout for expansion and contraction of pipe.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 39 of 44 224000
3.4 VALVES
A.All piping systems shall be provided with valves so located that they
can be operated, replaced, repaired and offer complete control to
each group of fixtures, appliance, equipment, and each gas, hot and
cold water branch.
B.Each fixture, appliance or piece of equipment shall have a separate
shut-off valve, furnished and installed, of approved type, for service to
be connected to.
C.Locate valves on supply and return, at each piece of equipment or
fixture and on main branches.
D.Drain valves on systems containing water shall be installed at the base
of each riser (after the shut-off valve), on downfed fixtures and at
equipment, also at such other locations as required to allow for
complete drainage of the system.
E.Valves shall be located as shown on the drawings or as here-in-before
specified.
3.5 CUTTING AND PATCHING
A.Drilling of all holes 4” dia. and smaller required for the installation of
plumbing shall be performed by the Plumbing Contractor. All work
and materials shall be installed in such a manner and at such time to
keep cutting and patching to a minimum.
B.Cutting of openings larger than 4” dia. will be performed by the
General Contractor.
C.Patching of all holes, after installation of piping or equipment, will be
performed by the General Contractor.
3.6 INSULATION
A.Insulation shall be applied by an independent Insulation Contractor
regularly engaged in that business.
B.Insulation shall not be omitted on piping in walls. Covering shall be
applied before masonry proceeds.
C.Insulation shall be applied over clean pipe with all joints butted firmly
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 40 of 44 224000
together and sealed.
3.7 SLEEVES AND ESCUTCHEONS
A.Sleeves for Pipes Through Non-fire Rated Partitions: 16-gauge
galvanized steel.
B.Sleeves for Pipes Through Fire Rated and Fire Resistive Floors and
Walls, and Fireproofing: Provide prefabricated fire rated sleeves
including seals, UL listed; or provide Schedule 40 galvanized steel,
sized for minimum 1" space between sleeve and carrier pipe.
C.Provide fire-stop compound at all penetrations of floor slabs or
firewalls such that fire rating integrity of barrier is not lessened.
D.Caulk: Caulk all sleeves water and airtight.
E.Size sleeves large enough to allow for movement due to expansion
and contraction. Provide for continuous insulation wrapping. Provide
pipe sleeves one size larger than the pipe it serves, including
insulation, except where "Link Seal" casing seals are used. Center pipe
in sleeve.
F.Floor and ceiling escutcheon plates: Floor and ceiling escutcheon
plates shall be split hinged, locked type. Plates shall be of pressed
steel with a heavy coating of chromium.
3.8 TESTING
A.The Plumbing Contractor shall notify the Engineer three working days
prior to day tests are to be made. Test all piping and make it gas and
water tight, in accordance with the authority having jurisdiction and
ordinances, and in the presence and to the satisfaction of the
applicable Inspector along with the Engineer and his representative.
B.No piping shall be buried, concealed or insulated before tested and
approved. Partial tests shall be made as required, by the progress of
the work, and the Plumbing Contractor shall accommodate the testing
operations to the progress of the project. Furnish all equipment,
labor, services and apparatus; also pay for all costs for pertinent tests.
All approvals shall be rendered in writing and submitted to the
Engineer. Remedy all defective work and replace all defective
materials, equipment or fixtures with new ones of the specified grade.
No caulking, peening, or wicking of screwed joints or holes will be
acceptable. This Contractor shall make and remove all temporary
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 41 of 44 224000
piping and line connections required for the tests and shall dispose of
test water and all wastes after tests in a satisfactory and
non-damaging manner.
C.Provide written reports to engineer of each individual test procedure
performed. Reports shall include the following minimum information:
1.Project location information.
2.Contractor’s name.
3.Name of person test performed by.
4.Name and company of person who observed test with
contractor.
5.Piping system.
6.Section of system tested.
7.Date of test.
8.Method of test.
9.Anticipated system working pressure.
10.Gauge range and incrementation used.
11.Start time of test.
12.Start test pressure.
13.End time of test.
14.End test pressure.
15.Observed loss in pressure.
16.Notes on any observed leaks.
D.Test gauges:
1.Tests requiring a pressure less than 1 psi shall utilize a U-tube
or digital manometer.
2.Tests requiring a pressure of 1 psi to 10 psi or less shall utilize
a testing gauge having increments of 0.10 psi or less.
3.Tests requiring a pressure of greater than 10 psi but less than
or equal to 100 psi shall utilize a testing gauge having
increments of 1 psi or less.
4.Tests requiring a pressure of greater than 100 psi shall utilize a
testing gauge having increments of 2 psi or less.
E.Piping Systems
1.Test piping according to procedures of authorities having
jurisdiction or, in absence of published procedures, as follows:
2.Gravity Sanitary Waste And Vent:
a.Test for leaks and defects in new piping and parts of
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 42 of 44 224000
existing piping that have been altered, extended, or
repaired. If testing is performed in segments, submit
separate report for each test, complete with diagram of
portion of piping tested.
b.Leave uncovered and unconcealed new, altered,
extended, or replaced drainage and vent piping until it
has been tested and approved. Expose work that was
covered or concealed before it was tested.
c.Roughing-in Plumbing Test Procedure: Test drainage
and vent piping, except outside leaders, on completion of
roughing-in. Close openings in piping system and fill
with water to point of overflow, but not less than 10-foot
head of water. From 15 minutes before inspection starts
to completion of inspection, water level must not drop.
Inspect joints for leaks. Multiple rough-in tests for
segments of the piping system are allowable.
d.Finished Underground Plumbing Test Procedure: After all
underground plumbing piping has been set and traps
filled with water, test connections and prove they are
gastight and watertight. Plug all pipe opening above slab
and the below ground building drains where they leave
building. Introduce air into piping system equal to
pressure of 1-inch wg. Use U-tube or manometer
inserted in trap to measure this pressure. Air pressure
must remain constant without introducing additional air
throughout period of inspection. From 15 minutes before
inspection starts to completion of inspection, water level
must not drop. Inspect plumbing fixture connections for
gas and water leaks.
e.Repair leaks and defects with new materials and retest
piping, or portion thereof, until satisfactory results are
obtained.
f.Prepare reports for tests and required corrective action.
F.Water Systems:
1.Upon completion of a section of or the entire water supply
system, the system, or portion completed, shall be tested and
proved tight under a water pressure not less than the working
pressure of the system; or, for piping systems other than
plastic, by an air test of not less than 50 psi. The water utilized
for tests shall be obtained from a potable source of supply.
2.Repair leaks and defects with new materials and retest piping,
or portion thereof, until satisfactory results are obtained.
3.Prepare reports for tests and required corrective action.
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 43 of 44 224000
3.9 CLEANING UP
A.After all the fixtures have been set and ready for use, and before
leaving the job, thoroughly clean all fixtures installed under this
Contract, removing all plaster, stickers, rust stains, and any foreign
matter or discoloration of fixtures, leaving every part in perfect
condition and ready for use.
3.10 EQUIPMENT INSTALLATION
A.All equipment furnished under this Section shall be installed in
accordance with its manufacturer's printed installation instructions,
whether so shown on the Drawings or not, and all labor and materials
required to accomplish this shall be furnished by the Plumbing
Contractor and be included in his Bid.
3.11 DISINFECTION
A.Flush out entire system.
B.Introduce chlorine or solution of calcium hypochlorite or sodium
hypochlorite. Fill lines slowly and apply agent at rate which will
produce 50 parts per million of chloride as determined by residual
chlorine tests at end of lines. Open and close valves and hydrants
while system is being chlorinated.
C.After twenty-four (24) hours test for residual chlorine. If more than 5
ppm are present, flush out system until all traces are removed.
D.After disinfection, flush treated water from system through its
extremities. Continue flushing until samples of water are satisfactory
to local authorities having jurisdiction. Repeat flushing if samples
taken daily over next three (3) days indicate that quality of water is not
being maintained. Do not draw samples from hydrants and
undisinfected hose.
E.Submit test results to Owner.
3.12 FIRE SAFING
A.Work Included: Provide labor, materials, and equipment necessary
to complete the work including, but not limited to the following:
Proj. No. 10105 Residence Conversions October 7, 2011
58 Kensington, 57 Dryads Green, 72 Dryads Green
Smith College, Northampton, MA
PLUMBING Page 44 of 44 224000
1.Fire safing at all penetrations through fire barriers.
2.Fire safing at all penetrations through smoke barriers.
3.Extent of fire and smoke barriers as indicated on the
Architectural Drawings.
4.Fire safing at all penetrations through floors, shafts, corridor
walls, stairway walls, mechanical rooms, electrical rooms,
vaults, storage rooms, kitchen, machine rooms, outdoor
storage rooms, and receiving rooms.
B.Safing Insulation
1.Fire safing insulation shall be Thermafiber as manufactured
by USG Interiors, Inc. or Architect-Engineer approved equal,
4" minimum thickness by the required full length and width,
or as indicated on the Drawings.
2.Provide incidental galvanized steel clip anchors.
C.Seal Compound: At "poke-through" openings, apply "Firecode" seal
compound as manufactured by USG Interiors, Inc., or approved
equal, over Thermafiber fire safing.
D.Preparation
1.At all fire rated assemblies, prepare all penetrations for
pipes.
E.Application
1.Install approved fire safing insulation of proper size leaving
no voids. Compress and friction fit fire safing and use
attachment clips where necessary.
2.Seal completely around all openings and over the fire safing
insulation with sealing compound.
END OF SECTION