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Smith- Permit Letter Phase 1B 2013-01-28 January 27, 2013 Louis Hasbrouck, Building Commissioner Office of the Building Commissioner Puchalski Municipal Building 212 Main Street Northampton, MA 01060 Re: Project Description Overview- Renovations to the Cutter and Ziskind Houses at Smith College Dear Mr. Hasbrouck, This letter is intended to provide you with a general project overview for the Renovations to the Cutter and Ziskind Houses at Smith College. Project Description The project involves the complete renovation of the existing 3- story, 65,680 gsf Cutter and Ziskind residences and the connecting dining hall and associated kitchen, along with two small additions on the wings of the first floor. The project scope includes Architectural, Civil, Landscape and MEPFP system upgrades. (Refer to Detailed Project Description below). The completed renovated building will incorporate energy conserving building technologies and design, and the project is targeting LEED “Silver” Certification. The project is located at 79 Elm Street in Northampton, MA 01063 in Zone: URC, Overlay: EU, Parcel: 31B-201 Client The Trustees of Smith College Contact: Charles Conant 126 West Street, Northampton MA 01063 Design Team Architect: Perkins+Will Contact: Dana Anderson Civil, Structural, MEPFP: ARUP USA, Inc Contact: Tim McCaul Landscape Architect: Ground Inc. Contact: Shauna Gillies-Smith Code Consultant: Costentini Associates Inc. Contact: Don Havener Construction Manager Consigli Construction Co., Inc. Contact: Sean Ditto Project Construction Schedule The project is planned for multi-phased construction, primarily over two summers with the completion date of August 2014. All existing life safety and environmental systems will be maintained at or exceeding current levels at all times during occupancy. Phase IA; scheduled for the latter part of February- May 2013 involves the work limited to the basement, such as removal of unused /out of service mechanical equipment, installation of new mechanical, plumbing and electrical infrastructure and associated selective demolition and new construction of partitions and infrastructure, and elevator pits. (Refer to Detailed Project Description below). Given that the building will be occupied during this construction phase, access to the basement will be restricted to construction personnel only and all existing MEP/FP systems supporting the building will remain operational. As noted, clear paths for egress and existing life safety and environmental systems will be maintained at or exceed current levels at all times during occupancy. Phase IB; scheduled for May – August 2013 when the building is unoccupied, includes remaining demolition and new construction of the basement and MEP equipment and the first floor dining room and kitchen, some upper level MEP infrastructure, roof, exterior envelop and site work. All egress, life safety and environmental systems will be in-place for re-occupancy after IB and until the commencement of phase II. Phase II; scheduled for May-August 2014, includes the remainder of the first floor and upper floors. (Refer to Logistics Plans by Consigli Construction). The building will not be occupied during the summer months of 2013 and 2014 (Phase IB and Phase II). Project Code Compliance Overview The project scope includes the residential sleeping units, dining facility and some common space throughout the building. (Refer to attached Code Compliance Approach Report dated October 26, 2012 under separate cover). Existing Building Design Methodology The design approach for the project is based on the work area method in accordance with IEBC 101.5.2 The work area of the project includes reconfiguration in more than 50 percent of the building area and the work is classified as Alterations Level 3. All work will comply with IEBC Chapters 6, 7, and 8 (IEBC 405.2). The project also includes an addition to the dining hall portion of the building. This work will comply with IEBC Chapter 10. The existing building and proposed addition will comply with the height and area limitations in MSBC Table 503; the building is of Type IIB construction with non- separated mixed use approach. Newly Constructed Elements All newly constructed elements will comply with the new construction provisions of the MSBC. Uses Group Classifications Non Separated Mix Use: Use Group A-2 Dining Use Group A-3 Common Areas Use Group R-2 Dormitories Use Group S-2 Storage and Mechanical Areas Fire Protection The building will be fully sprinklered and will be provided with a fire alarm/detection system. Fire Resistance Ratings Residential corridor walls and sleeping unit separations will have a fire resistance rating of at least ½ hour. Means of Egress Both wings of the building are provide with 2 enclosed means of egress stairways. The basement is likewise provided with 2 enclosed means of egress stairways. All means of egress will be adequately sized to serve the occupant load present. Accessibility The total cost of work performed will be in excess of $100,000 and will exceed 30% of the full and fair cash value of the building. Therefore in accordance with MAAB Section 3.3.2, the building will be made to comply with all applicable MAAB requirements. Currently, we are seeking a variance from the following sections of 521 CMR MAAB: • Section 26.6.3 – Pull side Doorway Maneuvering Clearances • Section 27.3 - Nosings Detailed Project Description Elevations and Entries South Elevation: At the South elevation, the area corresponding to the dining room will be a new addition and façade, and will include new aluminum and insulated glass curtainwall system at the wall and hollow metal storefront at vestibule with a painted composite metal fascia at surround and at the roof level. The new roof will align with the existing roof parapet elevation. New roofing materials with improved insulation will be on both the existing and new roof areas. The existing 8’ brick wall is to be prepared and repainted. East and West Elevations within the Courtyard: At these elevations, the first floor will be a new aluminum and glass curtainwall and door system. The existing steel fascias and column covers will be recovered with new aluminum composite metal panel. The Second and Third floors will have all new insulated glass and aluminum curtainwall system. The fixed, operable and spandrel panels will be in the same pattern within the original openings but with improved insulation and ventilation. East and West Elevations at Entries: At these entries the First floor will have new hollow metal and glass storefront system. New concrete stirs, landing and ramp will be provided at entries. All new insulated clearstory windows and full length windows will match the existing window pattern. The existing fascias and column covers will be replaced with new aluminum composite metal system. On the upper floors will be all new insulated glass and aluminum curtainwall system. The fixed, operable and spandrel panels will be in the same pattern within the original openings but with improved insulation and ventilation. The existing masonry on the Second and Third floors will be cleaned and repointed. The masonry walls on all levels will be retrofitted from the interior to improve insulation and vapor barrier to increase the R value at these locations. The existing masonry on the First floor will be prep’d and repainted. North Elevation: At the North Elevation the First floor will be new curtainwall system. All new insulated clearstory operable windows and full length windows will match the existing window pattern. The existing fascias and column covers will be replaced with new aluminum composite metal system. On the upper floors will be all new insulated glass and aluminum curtainwall system. The fixed, operable and spandrel panels will be in the same pattern within the original openings but with improved insulation and ventilation. The existing masonry on the Second and Third floors will be cleaned and repointed. The masonry walls on all levels will be retrofitted from the interior to improve insulation and vapor barrier to increase the R value at these locations. The existing masonry on the First floor will be prep’d and repainted. Interior Floors and Roof Basement Floor: At this level, the renovation includes retaining existing partitions where indicated and the new partitions will be glass and hollow metal frames or GWB partitions where indicated. New elevator and control room will be accommodated for each House. New lighting throughout and new ceilings where indicated. All new finishes throughout are proposed. First Floor: At this level, renovations include an extended dining area with new vestibule and all new finishes and lighting. The Kitchen will be modified to eliminate the appendage and relocate the Kosher coolers within the building. The new addition at the southern end on each bar will accommodate a house kitchen and game room. New ceilings, new lighting and new finishes will be throughout. Second and Third Floors: Renovations on these floors include new partitions and modifying existing partitions to remain where indicated on the drawings, new millwork wardrobes and doors throughout, new inner chase walls, plumbing, plumbing fixtures and finishes in the revised bathrooms cores. New lighting and finishes throughout. Roof: At the existing roof areas, renovations include new EPDM roofing and insulation, new openings are required at the new insulated skylights where shown. Refer to MEPFP and Structural Narratives for additional information and scope of work at new and existing roofs. A green roof will be located above the Dining Area. Courtyard and Site: The courtyard and area surrounding Cutter and Ziskind include improved walkway and parking areas. The courtyard will be redesigned to be a more inviting and more user- friendly. The grade will be at the same elevation as the first floor with sloped walkways on the southeast and southwest corners of the building. Both main entrances (East and West Elevations) will have new sloped walkway and stairs. The current vehicular drop- off and parking along Henshaw Sreet will be removed. An ADA accessible vehicular parking space is to be designated along Henshaw Street. Structural Overview The structural work will upgrade the lateral system with inserted braced frames from Roof to Ground level. New openings for elevator shafts and pit will be provided through the building. Strengthening of low roof areas to meet code snow drift loading will be provided together with a new roof and foundation extension for dining area. Reinforcing and support for new kitchen roof level MEP equipment is also being provided. Reinforcing, support and new slab and roof openings for MEP needs, as well as architectural skylights is being provided. A new mechanical penthouse roof plus reconfiguration of the original roof level supporting new MEP equipment is being provided. Mechanical Overview A connection to the campus central chilled water system will be provided. A new water central chilled water system, including heat exchangers, water treatment and other ancillary equipment will be provided at a capacity of 240 Tons. Medium pressure steam at 125 psi will be supplied from the campus steam main to the basement central plant room. A Pressure Reducing Valve (PRV) station will be installed in the central plant room to generate low pressure steam at 10psi serving heat exchangers that will generate heating hot water and domestic hot water. Fan coil units in the dormitory rooms will be 2 pipe heating hot water/chilled water change-over systems. HVAC systems serving the dining and kitchen, comprising of dedicated hood exhaust fans and ductwork, rooftop make up air units serving the kitchen and packaged DX rooftop air handling unit (AHU) serving the dining area, will be replaced with new – The Kosher kitchen exhaust fans will be reused. Fresh air will be provided to each dormitory room and corridors with transfer make up air to restrooms from rooftop AHU’s with heating, cooling and energy recovery wheels. Common areas will be served from a basement AHU with variable speed fans, heating coils, cooling coils, pre-filter and final filter, and economizer sections. Dedicated exhaust air systems will be provided for bathrooms and kitchen which has multiple exhaust fans. The laundry dryer exhaust is tied to a main exhaust header that feeds a vertical riser venting to the roof. Vestibule entrances will be provided with overhead door heaters, with exception to the main dining entrance, which will be provided with a cabinet unit heater in the wall. In addition, stairwells and storage rooms with exterior walls will be provided with finned tube radiators. The IDF room in the basement is currently cooling with a packaged split system. Electrical Overview. The building will be upgraded to a new 3,000-amp, 208/120-Volt, three-phase, four- wire service. The vault mounted transformer will be replaced and new secondary service extended to the new main electrical room location. Secondary service will consist of a new 208/120 volt, three phase, four wire secondary metered service. The main service switchboards will be located in the center of the building and used to feed panelboards located throughout the facility. Emergency power will be provided via an emergency generator set, located outside in a weatherproof enclosure. The generator set will be designed to support all life safety loads and critical systems in the event of a building and utility power failure. The generator will also be used to back-up the existing data center and telecommunication equipment. An addressable fire detection and alarm notification system with voice evacuation will be provided as required by code. Plumbing Overview All domestic hot and cold water systems in the building will be replaced back to the pressure reducing valve on the incoming main and new distribution systems will be provided. The existing steam and gas water heaters will be relocated and reused. Hot water to the kitchen will be provided with circulating 140 degree hot water, and a circulating 120 degree system will serve the other plumbing fixtures in the building. Temperatures at fixtures will be per 248CMR. Low flow plumbing fixtures will be provided throughout. A new gravity sanitary and storm drainage system will be provided and will connect to existing drainage outfalls from the building. Kitchen drainage will go through grease interceptors prior to discharge to the public sewer system. A new natural gas system will be provided and will serve the kitchen cooking appliances and the existing gas boiler serving the domestic hot water during summer months. P:\Boston\154059.000_Smith-Reno_Cutter&Ziskind\DOCS\05.0-AgencyCorrepondence\05.01- LocalAgency\Smith- Permit Letter R.docx Fire Protection Overview The building is currently partially sprinkler protected and has a standpipe system. A new sprinkler system in accordance with NFPA 13 and 13R as applicable will be provided. A new standpipe system in accordance with NFPA 14 will be provided. The new sprinkler system will provide full sprinkler coverage throughout. Each wing of each floor will be provided with a separate flow control assembly indicating sprinkler water flow and will be supervised by the buildings fire alarm system. Two dry sprinkler systems with dry pendent heads will be provided in the overhangs at the courtyard access at the south end of each wing. A new wet manual standpipe system will be provided in each of the egress stairs with a 2½” fire hose valve provided on the landing level. Sincerely, Karen Estabrook, LEED GA Registered Architect Perkins+Will