31B-230 (17) THE MASSACHUSETTS STATE BUILDING CODE
' 3401.9.2 Fire protection: The garage shall have five-eighths(5/8) inch gypsum
board on the garage side of wall or floor adjacent to the house, and wherever the
attic area is continuous between the garage and the house a firestop of
one-half(1/2) inch gypsum board shall be used to form a barrier to separate the
garage and house.
3401.9.3 Flooring: Garage and carport floor surfaces shall be approved
nonabsorbent, noncombustible material.
3401.9.4 Floor level: The floor level of all door openings between the garage
and the dwelling shall have either a mini-mum four (4) inch raised sill or the
floor shall have a ramp or floor pitched a minimum of five (5) per cent in the
direction of the overhead garage doors.
3401.10 Egress
3401.10.1 Means of egress: In one- and two-family dwellings,each dwelling
unit shall have two (2) independent means of egres�, remote as possible from
each Cher and leading to grade; in addition, every floor within a dwelling unit
shall have at least one-(1) means of egress which shall provide a continuous and •
unoL'.ructed path leading to grade.
3401.10.2 Egress doors: Access to grade at termination of the required means
of egress may be provided by the uce of both side-hinged swinging doors or
sliding glass doors. Swinging doors provided to meet this requirement may swing
inward.
3401.10.3 Emergency egress: Sleeping rooms shall have at least one (1)
open:ble window or exterior door to permit emerg,:ncy egress or rescue. A
required window must be openable from the inside without the use of separate
tools, and shall conform to the following:
1. the sill height shall be not more than forty-four (44)
inches above the finish floor;
slmll provide a minimum net clear openin area of 3.3
,1; ,..rlcinnr of twri,11, ('?n) inrhrc }h„ -)f ..1,,w• (''1 inehPc. in either
dhrection. It a double bung unit is usu, ti en such dimensions shah
. ._ .l.11 '.YCAyJ 1.411U 11C/11 r-.yJ
1 ) {0.4.-1 Interior doorways: 'Tile minimum nominal width of any interior
11 f_ (3:
t 780 CMR - Fifth Edition