17C-220 (26) EDYTHE M.AMBROZ, AIA
e� ARCHITECT
.January 24, 1995
61 ? Z Nt1r t`
City of Northampton
.Building Inspector's:Office. .--
:Northampton, MA 01060
Attention: Mr. Anthony Patillo,
New Construction
Assistant Building lhspector Historic Renovation
. . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : Residential Design
Project: Florence Inn
17 North Maple Street
Renovations
Florence;'MA
LETTER OF TRANSMITTAL
hand delivered
Enclosures: - one plan of Existing Conditions, dated 12/13/94, for
your reference.
Notes: Tony: in reference to your call this morning regarding Po Box 1086
. . . • • • • . .second and third-floor•accessible baths, l have questions - Northampton,MA 01061
for you on the AAB requirements. Under current
• ��� ��v�x•�`�,axo regulations, the public spaces of twelve or more units
require accessibility, but not units themselves. Only when
there are twenty or more units are we required to provide
an accessible unit.
3e I'm also reviewing the new draft regulations, which
require one accessible unit (8.3), with accessible kitchens
and baths (8.3.3), but 8.4 says that accessible units must
.have accessible routes, and an elevator is not required
(8:4.1). This leads me to believe that second and third
floor-bathrooms and kitchen are not required to be
accessible..
The second question.pertains to sprinkler system: are we
required to have one? And,.related to this question,
where in the State Code does it•indicate where NFPA Life
413-586-1086
. Safety.Code Applies?. .Thank,you for your, consideration., fax 413-586-1806
EDYTHE M.AMBROZ, AIA
O, O ARCHITECT
Fm �
January 24, 1995
:City of Northampton 4:.r- --•-;-; �`";,
.Building Inspector's :Office . _ =
:Northampton, MA 01060
Attention: Mr. Anthony Patillo,
Assistant Building s cor New Construction
g Ii � t Historic Renovation
... . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . Residential Design
Project: Florence Inn
17 North Maple Street
Renovations
Florence. MA
LETTER OF TRANSMITTAL
:hand delivered
Enclosures: - one plan of Existing Conditions, dated 12/13/94, for
your reference.
Notes: Tony: in reference to your call this morning regarding PO Box 1086
second'and third floor.accessible baths; I have questions ' Northampton,MA 01061
for you on the AAB requirements. Under current
regulations, the public spaces of twelve or more units
require accessibility, but not units themselves. Only when
there are twenty or more units are we required to provide
an accessible unit.
I'm also reviewing the new draft regulations, which
require one accessible unit (8.3), with accessible kitchens
and baths (8.3.3), but 8.4 says that accessible units must
.have accessible routes, and an elevator is not required
(8:4.1). This leads me to believe that second and third
floor bathrooms and kitchen are not required to be
accessible..
The second question.pertains to sprinkler system: are we
required to have one? And,.related to this question,
where in the State Code does it indicate where NFPA Life
413-586-1086
Safety.Code applies? Thank.you for your consideration. fax 413-586-1806
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REPAIR, ALTERATION, ADDITION AND CHANGE OF USE
SECTION 3204.0 REQUIREMENTS FOR CHANGE IN USE GROUP
TO ONE HAZARD INDEX GREATER
3204.1 General: When the existing use group is changed to a new use group of one
(1) hazard index higher (as provided in Table 3204), the existing building shall
conform to the requirements of the code for new construction, except as further
provided in this section.
3204.2 Mixed use: Compliance is required with Section':'313.0 and Table 902
except that floors and walls providing horizontal and vertical separation in buildings
of Types 3 and 4 construction shall have a fire-resistance rating of not less than one
(1) hour and shall be equipped with a fire suppression system.
3204.3 Restrictions within fire limits: No further compliance is required with
Section 906.0. However, if the fire hazard to adjacent buildings is substantially
increased due to an increased fire loading, then the requirements of Section 906.0
shall apply.
3204.4 Area and height limitations: No further compliance is required with
Sections 501.2 and 501.3 (e.g., a change in use is allowed in an existing building even
if it exceeds the area and height limits of Table 501).
3204.5 Accessibility for physically handicapped: No further compliance is
required with Section 512.
3204.6 Exitway stairs: Compliance is required with Section 816.0, except that
existing exitway stairways may be used as part of the required egress for the new use.
provided that the width is of sufficient capacity for the occupancy load, they are
structurally sound, and that the enclosures in buildings of Types ,3; 41"and"`"5
construction shall have a fireresistance rating of not less than one (1) hour. Stairway
enclosures in buildings of Type 1 and 2 construction shall have a fire resistance
rating of not less than two (2) hours. Where stair exitway doors are doors to an
apartment or office they need not swing onto the landing. Such doors shall b�'
self-closing and tight-fitting with approved hardware.
3204.7 Earthquake resistance and liquefaction: No further compliance to
Sections 1113.0 and 1201.0 is required. Structural alterations may be made to
existing buildings, but the resistance to lateral forces shall not be less than before
such alterations were made, unless the building as altered meets the requirements
of this code for earthquake loads.
3204.8 Mortar: No further compliance is required with Section 815.0.
615M (Effective 6/19M 780 CMR - Fifth Edition 32.7
THE MASSACHUSETTS STATE BUILDING CODE
901.2 Penetrations: Plans for buildings more than two stories in height shall
indicate where penetrations will be made for electrical, mechanical, plumbing and
communications conduits, pipes and systems, and shall also indicate the materials
and methods for maintaining the required structural integrity, fireresistance rating
and firestopping.
SECTION 902.0 FIRE HAZARD CLASSIFICATION
902.1 General: The degree of fire hazard of buildings and structures for each
specific use group as defined by the fire grading in Table 902 shall determine the
requirements for fire walls, fire separation walls, and horizontal and vertical
assemblies separating mixed uses as prescribed in Section 313.0 and all structural
members supporting such elements unless otherwise provided for in this code.
902.2 Unclassified uses: The building official shall determine the fire hazard
classification of a building or structure designed for a use not specifically provided
in Table 902 in accordance with the fire characteristics and potential fire hazard of
the use group which it most nearly resembles; or its designation shall be fixed by the
approved rules.
Table 90
FIRE F USE GROUPS
Use Description Fire grading
Group on hours
A-1 Assembly, theaters 3 dW
A-2 Assembly, night clubs 3 N, 1yL
A-3 Assembly, recreation centers, lecture halls,
terminals, restaurants R
A-4 Assembly, churches 1'/2
�.
duC�tional ,
F Factory and industrial 3
H High hazard 4
1-2 Institutional, incapacitated 2
1-3 Institutional, restrained 3
M 4e r
T 2 Residential, multi-family dwellings 1 z
R-3 Residential, 1- and 2- family dwellings 1
S-1 Storage, moderate hazard 3
S-2 Storage, low hazard 2
9-2 780 CMR - Fifth Edition
501.3 Height limit: The height in feet and number of stories above grade specifies
in Table 501 shall apply to all buildings and to all separate parts of a building
enclosed within lawful fire walls complying with the provisions of Article 9. A
basement shall be considered as a story above grade whenthe distance from grade
to the finished surface of the floor above the basement is more than 6 feet for more
than 50 percent of the total perimeter or more than 12 feet at any point.
501.4 Multi-story buildings: The area limits for buildings two stories in height shall
be the same as the area limits provided in Table 501 for one-story buildings. In
buildings over two stories in height, the area limits of Table 501 for one-story
buildings shall be reduced as specified in Table 501.4.
Table 501.4
PERCENT REDUCTION OF AREA LIMITS
Type of construction
No. of stories
1A & 1B 2A 2B, 2C, 3A, 3B, 4, 5A, 5B
1 None None None
2 None None None
3 None 5% 20%
4 None 10% 20%
5 None 15% 30%
6 None 20% 40,0
7 None 25% 50%
8 None 30% 60%
9 None 35% 70%
10 None 40% 80 0/0
501.5 Type 1 construction: Buildings of Type 1 construction permitted to be of
unlimited tabular heights and areas in Table 501 are not subject to the special
requirements that allow increased heights and areas for other types of construction.
SECTION 502.0 AREA MODIFICATIONS
502.1 General: The provisions of this section shall modify the area limits of Table
501 as herein specified.
502.2 Street frontage increase: When a building or structure has more than 25
percent of the building perimeter fronting on a street or other unoccupied space, the
area limitations sptc4if;ed in Table 501 shall be increased 2 percent for each 1
percent of such excess frontage. The unoccupied space shall be on the same lot or
dedicated for public use, and not less than 30 feet in width accessible from a street
by a posted fire lane not less than 18 feet in width.
5-4 Corrected 780 CMR - Fifth Edition
Table Sol "H
N HEIGHT AND AREA LIMITATIONS OF BUILDINGS =
m
height limitations of buildings (shown in upper figure as stories above grade and feet above grade), and area limitations of one or two-story buildings facing on D
one street or public space not less than 30 feet wide (shown in lower figure as area in square feet per floor). >
N
See note a. Table notes appear immediately following table. D
N.F. = Not Permitted; N. L = Not Limitcd ('?
2
Type of Construction C
U)
M
Noncombustible Noncombustible/Combustible Combustible
USE GROUPS Type 1 Type 2 Type 3 Type 4 T 5
Type W
Protected Protected Unpro- Pro- Unpro- Heavy Pro- Unpro- D
v note b tested tested tested timber tested tested 11
rn
note a 1A 18 2A 28 2C 3A 3B 4 5A 58
� _C
r AA Assembly; theaters N.L. N.L 5 St. 65' 3 St. 40' 2 St. 30' 3 St. 40' 2 St. 30' 3 St. 40' 1 St. 20' t St. 2o' F
19,950 13,125 8,400 11,550 8,400 12,600 8,925 4,200 d
Z
A•2 Assembly; night clubs and N.L. 4 St. 50' 3 St. 40' 2 St. 30' 1St. 20' 2 St. 30' 1St. 20' 2 St. 30' 1St. 20' t S1. 20' 0
similar uses 7,200 5,700 3,750 2,400 3,300 2,400 3,600 2,550 1,200 n
�. A3 Assembly; lecture halls, N.L. N.L. 5 St. 65' 3 St. 40' 2 St. 30' 3 St. 40' 2 St. 30' 3 St. 40' 1 St. 20' t St. 20'00 0
• recreation centers, terminals, 19,950 13,125 8,400 11,550 8,400 12,600 8,925 4,2
restaurants other than night clubs
A4 Assembly; churches N.L. N.L. 5 St. 65' 3 St. 40' 2 St. 30' 3 St. 40' 2 St. 30' 3 St. 40' 1 St. 20' 1 St. 20'
note d 34,200 22,500 14,400 19,800 14,400 21,600 15,300 7,200
noted note d note d
N.L. N.L 7 St. 85' 5 St. 65' 3 St. 40' 4 St. 50' 3 St. 40' S SL 65 3 St. 40'
m
34,200 22,500 14,4 19,800 14,400 21,600 15,300
note c,d I N.L. N.L. 5 St. 65' 3 St. 40' 2 St. 30' 3 St. 40' 2 St. 30' 3 St. 40' 1 St. 20'
1t ?'
34,200 22,500 14,400 19,800 14,400 21,600 15,300
F Factory and Industrial N.L. N.L. 6 St. 75' 4 St. 50' 2 St. 30' 3 St. 40' 2 St. 30' 4 St. 50' 2 St. 30' t St. 20'
1 note h 22,800 15,000 9,600 13,200 9,600 14,400 10,200 4,800
Z
CD
H High Hazard 5 St. 65' 3 St. 40' 3 St. 40' 2 St. 30' 1 St. 20' 2 St. 30' 1 St. 20' 2 St. 30' 1 St. 20' N.P.
note a 16,800 14,400 11,400 7,500 4,800 6,600 4,800 7,200 5,100
1-1 Deleted
1-2 Insthutional, Incapacitated N.L 8 St. 90' 4 St. 50' 2 St. 30' 1 St. 20' 1 20' N.P. 1 St. 20' 1 St. 20' N.P.
note 1 21,600 17,100 11,250 7,200 ',900 10,800 7,650 note I
13 Institutional, restrained N.L 6 St. 75' 4 St, 50' 2 St. 30' 1 St. 20' 2 St. 30' 1 St. 20' 2 St. 30' 1 St. 20' N.P.
Z
Z' 18,000 14,250 9,375 6,000 8,250 6,000 9,000 6,375
m
M Mercantile N.L N.L 6 St. 75' 4 St. 50' 2 St. 30' 3 St. 40' 2 St. 30' 4 St. 50' 2 St. 30' 1 St. 20'
11 1-1 io 22,800 15,000 9,600 13,200 9,600 14,400 10,200 4,800
e at,hotels N.L N.L 9 St. 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' '1 -3
note 100' 15,000 9,600 13,200 9,600 14,400 10,200l;t#�'
22,800
R-2 Residential, muhl-family N.L N.L 9 St. 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' 2 St. 35'
100' 15,000 9,600 13,200 9,600 14,400 10,200 4,800
22,800 note f note f
� R3 Residential, 1 6 2 family N.L N.L 4 St. 50' 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' 4 St. 50' 3 St. 40' 2 St. 35'
O 22,600 15,000 9,600 13,200 9,600 14,400 10,200 4,800
0 S-1 Storage, moderate N.L N.L 5 St. 65' 4 St. 50' 2 St. 30' 3 St. 40' 2 St. 30' 4 St. 50' 2 St. 30' 1 St. 20'
19,950 13,125 1 8,400 11,550 8,400 12,600 6,925 4,200
Ml
i S-2 Storage, low note g N.L N.L 7 St. 85' 5 St. 65' 3 St. 40' 4 St. 50' 3 St. 40' 5 St. 65' 3 St. 40' 2 St. 30'
�1 34,200 22,500 14,400 19,800 14,400 21,600 15,300 7,200
? U Utility, miscellaneous N.L N.L N.L N.L N.L N.L KIL N.L N.L N.L
M m
C. Notes epplicnble to Tnble SOIL Z
Note a. See the following sections for general exceptions to Table 501: M
Section 501.4 Allowable area reduction for multi-story buildings. XI
Section 502.2 Allowable area increase due to street frontage. D
Section 502.3 Allowable area increase due to automatic fire suppression system installation. r
l-
Section 503.1 Allowable height increase due to automatic fire suppression system in-tallation. C
Section 504.0 Unlimited area one-story buildings. C,
Note b. Buildings of Type 1 construction permitted to be of unlimited tabular heights and areas are not subject to special requiremer.ls that allow increased Q
heights and areas for other types of construction (see Section 501.5). Z
Note c. For tabular arcs increase in buildings of use group E, see Section 502.4. z
Note d. For height exceptions for auditoriums in buildings of Use Groups A-4 and E, see Section 503.2. f
Note e. For exceptions to height and area limitations of buildings of Use Group 11,see Article 6 governing the specific use. For other special firere sistive
requirements governing specific uses, see Section 905.0
Note G For exceptions to height of buildings for Use Group R-2 of Types 2B and 3A construction, see Section 905.2. --I
Note g. For height and area exceptions for open parking structures, sec Section 607.0. >
Note h. For exceptions to height and area limitations for special industrial uses, see Section 501.1.1. Il Il
N Note 1. Sec Section 633.5 for applicable height and area limitations for Child Day Care Centers. Z
G',� Note J. For R-I detoxification facilities, see Table 637.9. z
I HE MASSACHUSETTS STATE BUILDING CODE
SECTION 311.0 USE GROUP U, UTILITY AND MISCELLANEOUS USES a
311.1 General: Buildings and structures of an accessory character and miscellaneous
structures not classified in any specific use group shall be constructed, equipped and
maintained to meet the requirements of this code commensurate with the fire and
life hazard incidental to their use. Utility and miscellaneous uses shall include fences
over 6 feet high, tanks, cooling towers, retaining walls and buildings such as private
garages, carports, sheds and agricultural buildings.
SECTION 312.0 DOUBTFUL USE CLASSIFICATION
312.1 General: When a building or structure is proposed for a use not specifically
provided for in this code or the classification of which is doubtful, such building or
structure shall be included in the use group which it most nearly resembles in
respect to the existing or proposed life and fire hazard, and it shall be so classified
by the building official.
313-0 MIXED V$E 4N0,0:QCUPANC,1V
313.1 Two or more uses: When a building is occupied for two or more uses, not
included in the same use group, one of the following Sections 313.1.1 through 313.1.4
or a combination thereof shall apply.
313.1.1 Nonseparated uses: The provisions of the code applying to each use shall
a ply to such parts of the building as come within that use group. d
'c astruepti n N 1 ...be.,deter qi use of, th4
Rive
*1094 t aud-area 41m4hitii
ci±� :lt; shalt1P3'; u the rnsarated.use
A fire separation assembly is not required between uses, however, fire separation
assemblies shall be provided as required by other sections of the code. Tenant
separations shall be provided as required in Table 401.
'We'tuixed uses shall be Dom
`mentally` and vertically, by fire sepa>=a is i�jwall and floor/ceiling assetn s
bli
having a fireresistance rating corresponding to the highest fire grading prescribed in
Table 902 for the Lpa aLc „w Each such portion of the building shall comply with
the code based on the use of that space.E a[flee,building shall chmigy
oft#lie li ` t ii i - s 5Q , an 5 3 . based on the use ofthst- spat
tt b eunstructi' . For each story, the building area shall a such
that the sum of the ratios of the floor area of each use divided by the allowable area
by Sections 501.0 and 502.0 for each use shall not exceed one.
313.1.3 Separate buildings: The mixed uses shall be completely separated by fire
walls having a fireresistance rating corresponding to the highest fire grading
3-14 Corrected 780 CMR - Fifth Edition
USE GROUP CLASSIFICATION
307.4.3 Use Condition III: This use condition shall include all buildings in which
free movement is allowed within individual smoke compartments, such as within a
residential unit comprised of individual sleeping rooms and group activity space,with
egress impeded by remote control release of means of egress from such smoke
compartment to another smoke compartment.
307.4.4 Use Condition IV: This use condition shall include all buildings in which
free movement is restricted from an occupied space. Remote controlled release is
provided to permit movement from all sleeping rooms, activity space and other
occupied areas within the smoke compartment and to other smoke compartments.
307.4.5 Use Condition V: This use condition shall include all buildings in which
free movement is restricted from an occupied space. Staff controlled release is
provided to permit movement from all sleeping rooms, activity spaces and other
occupied areas within the smoke compartment and to other smoke compartments.
SECTION 308.0 USE GROUP M, MERCANTILE USES
308.1 General: All buildings and structures, or parts thereof, shall be classified in
Use Group M which are used for display and sales purposes involving stocks of
goods, wares or merchandise incidental to such purposes and accessible to the
� public; including, among others, retail stores, motor fuel service stations, shops and
G�o�►. salesrooms and markets. Highly combustible goods shall be limited to small
v� quantities that do not constitute a high hazard; and if not so limited, the
(� 5 construction shall comply with the requirements for Use Group H as set forth in the
v
provisions of Section 306.0 and Tables 401 and 501.
SECTION 309.0 USE GROUP R, RESIDENTIAL USES
309.1 General: All buildings and structures, or parts thereof, shall be classified in
Use Group R in which families or households live, or in which sleeping /
accommodations are provided for individuals with or without dining facilities,
excluding those that are classified as institutional buildings.
t
309.3 Use Group R-2 structures: This use group shall include all multiple-family
dwellings having more than two dwelling units, except as provided in Section 910.3
for multiple single-family dwelling units, and shall also include all boarding houses,
lodging houses and similar buildings arranged for shelter and sleeping
accommodations in which the occupants are primarily not transient in nature.
780 CMR - Fifth Edition 3-11
TYPES OF CONSTRUCTION CLASSIFICATION
flooring, laid crosswise or diagonally, or 15/32-inch plywood or 1/2 inch particle board;
or of planks not less than 4 inches, nominal, in width, set on edge close together and
well spiked, and covered with 1-inch nominal, dimension flooring, or 15/32 inch
plywood, or 1/2 inch particle board. The lumber shall be laid so that no continuous
line of joints will occur except at points of support. Floors shall not extend closer
than 1/2 inch to walls. Such 1/2 inch spaces shall be covered by a molding fastened to
the wall either above or below the floor and so arranged that it will not obstruct the
swelling or shrinkage movements of the floor, or corbeling of masonry walls under
floor shall be used in place of molding.
405.6 Roofs: Roofs shall be without concealed spaces and roof decks shall be sawn
or glued laminated, splined or tongue and groove plank, not less than 2 inches,
nominal, in thickness, 11/a inch thick interior plywood (exterior glue), or of planks
not less than 3 inches, nominal, in width, set on edge close together and laid as
required for floors. Other types of decking shall only be used if providing equivalent
fireresistance rating and structural properties.
405.7 Walls: Walls shall be of solid wood construction formed by not less than two
layers of 1-inch matched boards or laminated construction of a 4-inch thickness, or
of 1-hour fireresistance rated construction.
405.8 Exterior structural members: Wood columns and arches conforming to
heavy timber sizes shall only be used externally where a fire separation distance of
20 feet or more is provided.
, STRUCTION
406.1 General: Buildings and structures of Type 5 construction are those in which
the exterior walls, bearing walls, partitions, floor and roof construction are
constructed of any materials permitted by this code and in which the structural
elements have the required fireresistance ti s s ecified in Table 401.
buildings shall be further classified as Types SA (protectei
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780 CMR - Fifth Edition 4-7
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