CODE ANALYSIS, 03/12/2019 RICHARD A.SAMPSON AIA
Building Code Consulting LLC
62 Grove Street,Norfolk,MA 02056
(508)520-2376
richard@rascode.com
http://www.rascode.com
CODE ANALYSIS
March 12,2019
Project: Multiple Single Family over a Restaurant.
96 North Main Street
Salem,MA
BUILDING CODE/REGULATIONS
APPLICABLE CODES:
Building Code: 780 CMR The Massachusetts State Building Code—Ninth Edition
Structural Code: 780 CMR The Massachusetts State Building Code—Ninth Edition
Fire Code: 527 CMR 1.00: Massachusetts Comprehensive Fire Safety Code
Plumbing Code: 248 CMR Massachusetts State Plumbing Code
Mechanical Code: International Mechanical Code—2015 Edition
Electric Code: NFPA 70-2017 with 527 CMR Chapter 12 Massachusetts Electrical Code
Amendments
Energy Code: 780 CMR The Massachusetts State Building Code—Ninth Edition,
Chapter 13,2015 International Energy Conservation Code with
Massachusetts amendments or ASHRAE 90.1-2013 with Massachusetts
amendments.
Salem has adopted the Stretch Energy Code.
Accessibility: 521 CMR Architectural Access Board Rules and Regulations
Excerpted code text is presented in Times 10 point font
Comments and explanations are presented in Aria! 12 point font
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This project includes the upgrade and reconfiguration of the second and third existing R-3
Residential use group dwelling units. There is no work to be performed on the first floor
restaurant level. The existing building is all wood construction and is classified as
construction type VB. There is no existing sprinkler system. There are existing alarm
systems installed but it is unclear if they are in good working condition.
CHAPTER 3
USE AND OCCUPANCY CLASSIFICATION
SECTION 301 GENERAL
301.1 Scope.The provisions of this chapter shall control the classification of all buildings and structures as to use and
occupancy.
SECTION 302 CLASSIFICATION
302.1 General.Structures or portions of structures shall be classified with respect to occupancy in one or more of the
groups listed in this section.A room or space that is intended to be occupied at different times for different purposes shall
comply with all of the requirements that are applicable to each of the purposes for which the room or space will be occupied.
Structures with multiple occupancies or uses shall comply with Section 508.Where a structure is proposed for a purpose that
is not specifically provided for in this code,such structure shall be classified in the group that the occupancy most nearly
resembles,according to the fire safety and relative hazard involved.
SECTION 303 ASSEMBLY GROUP A
303.1 Assembly Group A.Assembly Group A occupancy includes,among others,the use of a building or structure,or a
portion thereof,for the gathering of persons for purposes such as civic,social or religious functions;recreation,food or drink
consumption or awaiting transportation.
303.3 Assembly Group A-2.Group A-2 occupancy includes assembly uses intended for food and/or drink consumption
including,but not limited to:
Restaurants
The existing restaurant on the first floor is classified as use group A-2 Assembly
The second and third floor levels will continue to be classified as use group R-3 Residential
602.5 Type V.Type V construction is that type of construction in which the structural elements,exterior walls and interior
walls are of any materials permitted by this code.
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TABLE 601
FIRE-RESISTANCE RATING REQUIREMENTS FOR BUILDING ELEMENTS(HOURS)
TYPE 1 TYPE II TYPE III TYPE TYPE V
BUILDING ELEMENT IV
A B A B A B HT A B
Primary structural framer(see Section 202) 3a 1 0 1 0 HT 1 0
Bearing walls
Exterior`'r 3 2 1 0 2 2 2 1 0
Interior 3a 2' 1 0 1 0 1/HT 1 0
Nonbearing walls and partitions Exterior See Table 602
Nonbearing walls and partitions See
Interior° 0 0 0 0 0 0 Section 0 0
602.4.6
Floor construction and associated secondary members 2 2 1 0 1 0 HT 1 0
(see Section 202)
Roof construction and associated secondary members h n. n. b.� n.
(see Section 202) 1 11 1 0 1 0 HT 1 0
For SI: 1 foot=304.8 mm.
SECTION 420 GROUPS I-1,R-1,R-2,R-3 AND R-4
420.1 General.Occupancies in Groups I-1,R-1,R-2,R-3 and R-4 shall comply with the provisions of Sections 420.1
through 420.6 and other applicable provisions of this code.
420.2 Separation walls.Walls separating dwelling units in the same building,walls separating sleeping units in the same
building and walls separating dwelling or sleeping units from other occupancies contiguous to them in the same building
shall be constructed as fire partitions in accordance with Section 708.
7083 Fire-resistance rating.Fire partitions shall have a fire-resistance rating of not less than 1 hour.
Exceptions:
1. Corridor walls permitted to have a 1/2-hour fire-resistance rating by Table 1020.1.
2. Dwelling unit and sleeping unit separations in buildings of Type 11B,IITB and VB construction shall have
fire-resistance ratings of not less than 1/2 hour in buildings equipped throughout with an automatic sprinkler
system in accordance with Section 903.3.1.1.
Dwelling unit separation walls must be 1/2 hour fire rated due to the construction type being
VB and the introduction of a new NFPA 13 sprinkler system .
4203 Horizontal separation.Floor assemblies separating dwelling units in the same buildings,floor assemblies separating
sleeping units in the same building and floor assemblies separating dwelling or sleeping units from other occupancies
contiguous to them in the same building shall be constructed as horizontal assemblies in accordance with Section 711.
711.2A3 Dwelling units and sleeping units.Horizontal assemblies serving as dwelling or sleeping unit separations
in accordance with Section 420.3 shall be not less than 1-hour fire-resistance-rated construction.
Exception:Horizontal assemblies separating dwelling units and sleeping units shall be not less than 1/2-hour fire-
resistance-rated construction in a building of Type IIB,IIIR and VB construction,where the building is equipped
throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
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Horizontal separations between dwelling units must be 1/2 hour fire rated due to the
construction type being VB and the introduction of a new NFPA 13 sprinkler system.
711.2A.6 Other separations.Where a horizontal assembly is required by other sections of this code,the assembly
shall have afire-resistance rating of not less than that required by that section.
Refer to 780 CMR 508 later on in this document for the horizontal separation requirements
between the existing restaurant and the second floor dwelling unit.
[F]4205 Automatic sprinkler system.Group R occupancies shall be equipped throughout with an automatic sprinkler
system in accordance with Section 903.2.8.Group 1-1 occupancies shall be equipped throughout with an automatic sprinkler
system in accordance with Section 903.2.6.Quick-response or residential automatic sprinklers shall be installed in
accordance with Section 903.3.2.
Refer to Chapter 34 review following this section for new sprinkler requirement.
[F]420.6 Fire alarm systems and smoke alarms.Fire alarm systems and smoke alarms shall be provided in Group 1-1,R-
1,R-2 and R-4 occupancies in accordance with Sections 907.2.6 ,907.2.8,907.2.9 and 907.2.10,respectively.Single-or
multiple-station smoke alarms shall be provided in Groups 1-1,R-2,R-3 and R-4 in accordance with Section 907.2.11.
BEGIN CHAPTER 34 REVIEW
CHAPTER 34 EXISTING BUILDINGS
SECTION 101 GENERAL
[A] 1013 Intent. The intent of this code is to provide flexibility to permit the use of alternative approaches to achieve
compliance with minimum requirements to safeguard the public health,safety and welfare insofar as they are affected by the
repair,alteration,change of occupancy,addition and relocation of existing buildings.
This report will serve as the required investigation and evaluation.
WORK AREA.That portion or portions of a building consisting of all reconfigured spaces as indicated on the construction
documents.Work area excludes other portions of the building where incidental work entailed by the intended work must be
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performed and portions of the building where work not initially intended by the owner is specifically required by this code.
301.1.2 Work area compliance method.Repairs,alterations,additions,changes in occupancy and relocated
buildings complying with the applicable requirements of Chapters 5 through 13 of this code shall be considered in
compliance with the provisions of this code.
This project will use the work area compliance method.
SECTION 504 ALTERATION-LEVEL 2
504.1 Scope.Level 2 alterations include the reconfiguration of space,the addition or elimination of any door or window,the
reconfiguration or extension of any system,or the installation of any additional equipment.
504.2 Application.Level 2 alterations shall comply with the provisions of Chapter 7 for Level 1 alterations as well as the
provisions of Chapter 8.
SECTION 505 ALTERATION—LEVEL 3
505.1 Scope.Level 3 alterations apply where the work area exceeds 50 percent of the building area.
505.2 Application.Level 3 alterations shall comply with the provisions of Chapters 7 and 8 for Level 1 and 2 alterations,respectively,as
well as the provisions of Chapter 9.
The aggregate existing building area is 5,051 SF. The total aggregate work area is 1,688
SF. 1,688/5,051 = 33.4%.
The total aggregate work area is less than 50% of the aggregate building area and
therefore this project will be a level 2 alteration.
CHAPTER 8 ALTERATIONS—LEVEL 2
SECTION 801 GENERAL
801.1 Scope.Level 2 alterations as described in Section 504 shall comply with the requirements of this chapter.
Exception:Buildings in which the reconfiguration is exclusively the result of compliance with the accessibility
requirements of Section 705.2 shall be permitted to comply with Chapter 7.
801.2 Alteration Level 1 compliance.In addition to the requirements of this chapter,all work shall comply with the
requirements of Chapter 7.
8013 Compliance.All new construction elements,components,systems,and spaces shall comply with the requirements of
the International Building Code.
Exceptions:
1. Windows may be added without requiring compliance with the light and ventilation requirements of the
International Building Code.
2. Newly installed electrical equipment shall comply with the requirements of Section 808.
3. The length of dead-end corridors in newly constructed spaces shall only be required to comply with the provisions
of Section 805.6.
4. The minimum ceiling height of the newly created habitable and occupiable spaces and corridors shall be 7 feet
(2134 mm).
All new work will comply with the code for new construction except as listed under the
above exceptions.
803.2.2 Supplemental stairway enclosure requirements.Where the work area on any floor exceeds 50 percent of that
floor area,stairways that are part of the means of egress serving the work area shall,at a minimum,be enclosed with
smoke-tight construction on the highest work area floor and all floors below.
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Exception: Where stairway enclosure is not required by the International Building Code or the International Fire
Code.
Existing stairwell enclosure walls are allowed to be smoke tight walls per the above code
section. All newly constructed stair enclosure walls must be 1 hour fire rated with 1 hour
fire rated doors and closer.
803.4 Interior finish.The interior finish of walls and ceilings in exits and corridors in any work area shall comply with the
requirements of the International Building Code.
Exception:Existing interior finish materials that do not comply with the interior finish requirements of the International
Building Code shall be permitted to be treated with an approved fire-retardant coating in accordance with the
manufacturer's instructions to achieve the required rating.
803.4.1 Supplemental interior finish requirements.
Where the work area on any floor exceeds 50 percent of the floor area,Section 803.4 shall also apply to the interior finish
in exits and corridors serving the work area throughout the floor.
Exception: Interior finish within tenant spaces that are entirely outside the work area.
The work areas on the second and third floors are greater than 50% of the story floor area.
All wall, ceiling and floor finishes must meet 780 CMR Chapter 8 and Table 803. Existing
finishes that do not meet Chapter 8 requirements are allowed to be treated with an
approved fire-retardant coating to meet Chapter 8 finish requirements.
TABLE 803.11
INTERIOR WALL AND CEILING FINISH REQUIREMENTS BY OCCUPANCY"
SPRINKLERED' NONSPRINKLERED
Corridors and
Interior exit stairways, Corridors and enclosure Rooms and Interior exit stairways, Rooms and
GROUP interior exit ramps and for exit access stairways enclosed spaces interior exit ramps and enclosure for exit enclosed
exit passageways ° and exit access ramps exit Passageways'b access stairways and spaces
exit access ramps
A-l&A-2 B B C A Ad B
R-3 C C C C C C
For SI: 1 inch=25.4 mm, 1 square foot=0.0929m2.
a.Class C interior finish materials shall be permitted for wainscotting or paneling of not more than 1,000 square feet of
applied surface area in the grade lobby where applied directly to a noncombustible base or over furring strips applied to a
noncombustible base and fireblocked as required by Section 803.13.1.
b.In other than Group 1-3 occupancies in buildings less than three stories above grade plane,Class B interior finish for
nonsprinklered buildings and Class C interior finish for sprinklered buildings shall be permitted in interior exit stairways
and ramps.
c. Requirements for rooms and enclosed spaces shall be based upon spaces enclosed by partitions.Where a fire-resistance
rating is required for structural elements,the enclosing partitions shall extend from the floor to the ceiling.Partitions that
do not comply with this shall be considered enclosing spaces and the rooms or spaces on both sides shall be considered
one.In determining the applicable requirements for rooms and enclosed spaces,the specific occupancy thereof shall be
the governing factor regardless of the group classification of the building or structure.
d.Lobby areas in Group A-1,A-2 and A-3 occupancies shall not be less than Class B materials.
e. ClassC interior finish materials shallbe permitted in places of assembly with an occupant load of 300 persons or less.
f. For places of religious worship,wood used for ornamental purposes,trusses,paneling or chancel furnishing shall be
permitted.
g.Class B material is required where the building exceeds two stories.
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h.ClassC interior finish materials shallbe permitted in administrative spaces.
i. ClassC interior finish materials shallbe permitted in rooms with a capacity of four persons or less.
j. Class B materials shall be permitted as wainscotting extending not more than 48 inches above the finished floor in
corridors and exit access stairways and ramps.
k.Finish materials as provided for in other sections of this code.
1. Applies when protected by an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2.
SECTION 804 INTERIOR FLOOR FINISH
804.1 General.Interior floor finish and floor covering materials shall comply with Sections 804.2 through 804.4.2.
Exception:Floor finishes and coverings of a traditional type,such as wood,vinyl,linoleum or terrazzo,and resilient
floor covering materials that are not comprised of fibers.
804.2 Classification.Interior floor finish and floor covering materials required by Section 804.4.2 to be of Class I or II
materials shall be classified in accordance with NFPA 253.The classification referred to herein corresponds to the
classifications determined by NFPA 253 as follows:Class I,0.45 watts/cm2 or greater;Class II,0.22 watts/cm2 or greater.
8043 Testing and identification.Interior floor finish and floor covering materials shall be tested by an agency in
accordance with NFPA 253 and identified by a hang tag or other suitable method so as to identify the manufacturer or
supplier and style,and shall indicate the interior floor finish or floor covering classification in accordance with Section
8042.Carpet-type floor coverings shall be tested as proposed for use,including underlayment.Test reports confirming the
information provided in the manufacturer's product identification shall be furnished to the building official upon request.
804A Interior floor finish requirements.Interior floor covering materials shall comply with Sections 804.4.1 and 804.4.2
and interior floor finish materials shall comply with Section 804.4.2.
804A.1 Test requirement.In all occupancies,interior floor covering materials shall comply with the requirements of
the DOC FF-1 "pill test"(CPSC 16 CFR Part 1630)or with ASTM D 2859.
804A.2 Minimum critical radiant flux.In all occupancies,interior floor finish and floor covering materials in
enclosures for stairways and ramps,exit passageways,corridors and rooms or spaces not separated from corridors by
partitions extending from the floor to the underside of the ceiling shall withstand a minimum critical radiant flux.The
minimum critical radiant flux shall be not less than Class I in Groups 1-1,1-2 and 1-3 and not less than Class II in Groups
A,B,E,H,1-4,M,R-1,R-2 and S.
Exception: Where a building is equipped throughout with an automatic sprinkler system in accordance with Section
903.3.1.1 or 903.3.1.2,Class II materials are permitted in any area where Class I materials are required,and materials
complying with DOC FF-1 "pill test"(CPSC 16 CFR Part 1630)or with ASTM D 2859 are permitted in any area
where Class II materials are required.
SECTION 804 FIRE PROTECTION
804.1 Scope.The requirements of this section shall be limited to work areas in which Level 2 alterations are being
performed,and where specified they shall apply throughout the floor on which the work areas are located or otherwise
beyond the work area.
804.2.2 Groups A,B,E,F-I,H,I,M,R-1,R-2, R-4,S-1 and S-2.In buildings with occupancies in Groups A,B,
E,F-1,H,I,M,R-1,R-2, ` R-4,S-1 and S-2,work areas that have exits or corridors shared by more than one tenant
or that have exits or corridors serving an occupant load greater than 30 shall be provided with automatic sprinkler
protection where all of the following conditions occur:
1. The work area is required to be provided with automatic sprinkler protection in accordance with the International
Building Code as applicable to new construction;and
2. The work area exceeds 50 percent of the floor area.
Exception:If the building does not have sufficient water supply for design of a fire sprinkler system available to the
floor without installation of a new fire pump,work areas shall be protected by an automatic smoke detection system
throughout all occupiable spaces other than sleeping units or individual dwelling units that activates the occupant
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notification system in accordance with Sections 907.4,907.5 and 907.6 of the International Building Code.
CY AUTOMATIC SPRINKLER REQUIREMENTS
Building ha. Provide automatic fire sprinkler system throughout
buildin if one of the following conditions will exist see
Note al
Building
Fire Area occupant Occupancy location
Any floor other than the
A-2 [all others] >5,000 ft' >_ 100 level of exit discharge for
\,-2 Use
>0 ': 'el
Note a:
1. For Use Group R and I-1 buildings with an aggregate building area of 12,000 ft2 or more,a., mixed use
buildings containing R-Uses,the sprinkler system shall be designed and installed throughout the
structure in accordance with NFPA 13.
3. An automatic sprinkler system installed in accordance with section 903.3.13 shall he permitted in
Group R-3 occupancies.
On the second and third stories, the work areas share exits with other tenants. On the
second and third stories, the work areas are greater than 50% of the floor area. Therefore
a sprinkler system is required to be installed throughout the entire work area. However,
since the sprinkler system must meet the requirements of new construction per note a in
Table 903.2, the sprinkler system must be an NFPA 13 system. In addition, since the
building is a mixed use building containing an R use group, note a applies and the sprinkler
system is required to be installed throughout the entire structure.
804.4 Fire alarm and detection.An approved fire alarm system shall be installed in accordance with Sections 804.4.1
through 804.4.3.Where automatic sprinkler protection is provided in accordance with Section 804.2 and is connected to the
building fire alarm system,automatic heat detection shall not be required.
An approved automatic fire detection system shall be installed in accordance with the provisions of this code and NFPA
72.Devices,combinations of devices,appliances,equipment shall be approved.The automatic fire detectors shall be smoke
detectors,except that an approved alternative type of detector shall be installed in spaces such as boiler rooms,where
products of combustion are present during normal operation in sufficient quantity to actuate a smoke detector.
804.4.1 Occupancy requirements.A fire alarm system shall be installed in accordance with Sections 804.4.1.1 through
804.4.1.7.Existing alarm-notification appliances shall be automatically activated throughout the building.Where the
building is not equipped with a fire alarm system,alarm-notification appliances within the work area shall be provided
and automatically activated.
Exceptions:
1. Occupancies with an existing,previously approved fire alarm system.
2. Where selective notification is permitted.alarm-notification appliances shall be automatically activated in the
areas selected.
804.4.1.1 Group E.A fire alarm system shall be installed in work areas of Group E occupancies as required by the
International Fire Code for existing Group E occupancies.
804.4.1.2 Group I-1.A fire alarm system shall be installed in work areas of Group 1-1 residential care/assisted living
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facilities as required by the International Fire Code for existing Group I-1 occupancies.
804.4.13 Group I-2.A fire alarm system shall be installed throughout Group I-2 occupancies as required by the
International Fire Code.
804.4.1A Group I-3.A fire alarm system shall be installed in work areas of Group I-3 occupancies as required by the
International Fire Code.
804.4.15 Group R-I.A fire alarm system shall be installed in Group R-1 occupancies as required by the International
Fire Code for existing Group R-1 occupancies.
804.4.1.6 Group R-2.A fire alarm system shall be installed in work areas of Group R-2 apartment buildings as
required by the International Fire Code for existing Group R-2 occupancies.
804.4.1.7 Group R-4.A fire alarm system shall be installed in work areas of Group R-4 residential care/assisted
living facilities as required by the International Fire Code for existing Group R-4 occupancies.
A manual fire alarm is not required in R-3 occupancy.
804.4.2 Supplemental fire alarm system requirements. Where the work area on any floor exceeds 50 percent of
that floor area,Section 804.4.1 shall apply throughout the floor.
Exception:Alarm-initiating and notification appliances shall not be required to be installed in tenant spaces outside of
the work area.
804A3 Smoke alarms.Individual sleeping units and individual dwelling units in any work area in Group R and I-1
occupancies shall be provided with smoke alarms in accordance with the International Fire Code.
Exception:Interconnection of smoke alarms outside of the work area shall not be required.
Provide smoke alarms in dwelling units as required by 780 CMR 907.2.11.2 through
907.2.11.7.
SECTION 805 MEANS OF EGRESS
805.1 Scope.The requirements of this section shall be limited to work areas that include exits or corridors shared by more
than one tenant within the work area in which Level 2 alterations are being performed,and where specified they shall apply
throughout the floor on which the work areas are located or otherwise beyond the work area.
805.2 General.The means of egress shall comply with the requirements of this section.
Exceptions:
1. Where the work area and the means of egress serving it complies with NFPA 101.
2. Means of egress conforming to the requirements of the building code under which the building was constructed
shall be considered compliant means of egress if,in the opinion of the code official,they do not constitute a distinct
hazard to life.
8053 Number of exits.The number of exits shall be in accordance with Sections 805.3.1 through 805.3.3.
8053.1 Minimum number.Every story utilized for human occupancy on which there is a work area that includes exits
or corridors shared by more than one tenant within the work area shall be provided with the minimum number of exits
based on the occupancy and the occupant load in accordance with the International Building Code.In addition,the exits
shall comply with Sections 805.3.1.1 and 805.3.1.2.
8053.1.1 Single-exit buildings.Only one exit is required from buildings and spaces of the following occupancies:
10.In buildings of Group R-3 occupancy equipped throughout with an automatic fire sprinkler system,only one
exit shall be required from basements or stories below grade.
(780 CMR base code)10063.2 Single exits.A single exit or access to a single exit shall be permitted
from any story or occupied roof where one of the following conditions exists:
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4. Group R-3 and R-4 occupancies shall be permitted to have one exit or access to a single exit.
The second and third stories are use group R-3. As such per 1006.3.2, item #4 they are
allowed to have a single exit to the exterior of the building. There are 2 exits provided from
each dwelling unit.
805.9 Handrails.The requirements of Sections 805.9.1 and 805.9.2 shall apply to handrails from the work area floor to,
and including,the level of exit discharge.
805.9.1 Minimum requirement.Every required exit stairway that is part of the means of egress for any work area and
that has three or more risers and is not provided with at least one handrail,or in which the existing handrails are judged to
be in danger of collapsing,shall be provided with handrails for the full length of the stairway on I at least one side.All exit
stairways with a required egress width of more than 66 inches(1676 mm)shall have handrails on both sides.
805.9.2 Design.Handrails required in accordance with Section 805.9.1 shall be designed and installed in
accordance with the provisions of the International Building Code.
805.11 Guards.The requirements of Sections 805.11.1 and 805.11.2 shall apply to guards from the work area floor to,
and including,the level of exit discharge but shall be confined to the egress path of any work area.
805.11.1Minimum requirement.Every open portion of a stairway,landing,or balcony that is more than 30 inches
(762 mm)above the floor or grade below and is not provided with guards,or those portions in which existing guards
are judged to be in danger of collapsing,shall be provided with guards.
805.11.2 Design.Guards required in accordance with Section 805.11.1 shall be designed and installed in accordance
with the International Building Code.
All existing stairways must be in conformance with the above code section.
SECTION 806 ACCESSIBILITY
101.4.7 Architectural Access.Any reference in 780 CMR to accessibility shall be considered reference to 521 CMR:
Architectural Access Board.521 CMR is enforced by the building official.
521 CMR 9.00: MULTIPLE DWELLINGS
9.1 GENERAL
A multiple dwelling is considered to be either a lodging facility or a residential facility for hire,rent,lease,or
sale containing three or more dwelling units in a building. Facilities used for temporary accommodations
are considered transient lodging facilities. See 521 CMR 8.00: TRANSIENT LODGING FACILITIES.
For public and common use spaces in Multiple Dwellings, See 521 CMR 10.00: PUBLIC USE AND
COMMON USE SPACES IN MULTIPLE DWELLINGS.
9.4 GROUP 2 DWELLING UNITS
In multiple dwellings that are for rent, hire, or lease (but not for sale) and contain 20 or more units,
at least 5% of the dwelling units must be Group 2A units. Group 2A units must comply with
521 CMR 9.5, Dwelling Unit Interiors; and 521 CMR 44.00: GROUP 2 BATHROOMS; and
521 CMR 45.00: GROUP 2 KITCHENS; and 521 CMR 47.00: GROUP 2 BEDROOMS.
This building contains 2 dwelling units and is not required to have accessibility to those 2
units.
SECTION 808 ELECTRICAL
808.1 New installations.All newly installed electrical equipment and wiring relating to work done in any work area shall
comply with all applicable requirements of NFPA 70 except as provided for in Section 808.3.
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808.2 Existing installations.Existing wiring in all work areas in Group A-I,A-2,A-5,H and 1 occupancies shall be
upgraded to meet the materials and methods requirements of Chapter 7.
808.3 Residential occupancies.In Group R-2,R-3 and R-4 occupancies and buildings regulated by the International
Residential Code,the requirements of Sections 808.3.1 through 808.3.7 shall be applicable only to work areas located
within a dwelling unit.
Both dwelling units are included in the aggregate work area and must be in conformance
with 808.3.1 thorugh 808.3.7.
8083.1 Enclosed areas.All enclosed areas,other than closets,kitchens,basements,garages,hallways,laundry areas,
utility areas,storage areas and bathrooms shall have a minimum of two duplex receptacle outlets or one duplex
receptacle outlet and one ceiling or wall-type lighting outlet.
8083.2 Kitchens.Kitchen areas shall have a minimum of two duplex receptacle outlets.
80833 Laundry areas.Laundry areas shall have a minimum of one duplex receptacle outlet located near the laundry
equipment and installed on an independent circuit.
8083A Ground fault circuit interruption.Newly installed receptacle outlets shall be provided with ground fault
circuit interruption as required by NFPA 70.
80835 Minimum lighting outlets.At least one lighting outlet shall be provided in every bathroom,hallway,
stairway,attached garage,and detached garage with electric power,and to illuminate outdoor entrances and exits.
8083.6 Utility rooms and basements.At least one lighting outlet shall be provided in utility rooms and basements
where such spaces are used for storage or contain equipment requiring service.
8083.7 Clearance for equipment.Clearance for electrical service equipment shall be provided in accordance with
the NFPA 70.
SECTION 809 MECHANICAL
809.1 Reconfigured or converted spaces.All reconfigured spaces intended for occupancy and all spaces converted to
habitable or occupiable space in any work area shall be provided with natural or mechanical ventilation in accordance with
the International Mechanical Code.
Exception:Existing mechanical ventilation systems shall comply with the requirements of Section 809.2.
809.2 Altered existing systems.In mechanically ventilated spaces,existing mechanical ventilation systems that are altered,
reconfigured,or extended shall provide not less than 5 cubic feet per minute(cfm)(0.0024 m3/s)per person of outdoor air
and not less than 15 cfm(0.0071 m3/s)of ventilation air per person;or not less than the amount of ventilation air determined
by the Indoor Air Quality Procedure of ASHRAE 62.
8093 Local exhaust.All newly introduced devices,equipment,or operations that produce airborne particulate matter,
odors,fumes,vapor,combustion products,gaseous contaminants,pathogenic and allergenic organisms,and microbial
contaminants in such quantities as to affect adversely or impair health or cause discomfort to occupants shall be provided
with local exhaust.
All mechanical work must be in conformance with this code section.
SECTION 810 PLUMBING
810.1 Minimum fixtures.Where the occupant load of the story is increased by more than 20 percent,plumbing fixtures for
the story shall be provided in quantities specified in the International Plumbing Code based on the increased occupant load.
The occupant load has not been increased.
SECTION 811 ENERGY CONSERVATION
811.1 Minimum requirements.Level 2 alterations to existing buildings or structures are permitted without requiring the
entire building or structure to comply with the energy requirements of the International Energy Conservation Code or
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International Residential Code.The alterations shall conform to the energy requirements of the International Energy
Conservation Code or International Residential Code as they relate to new construction only.
Exterior walls that are opened and exposing the cavities must be upgraded to meet the
requirements of the energy code.
END OF CHAPTER 34 REVIEW
TABLE 504.3'
ALLOWABLE BUILDING HEIGHT IN FEET ABOVE GRADE PLANE
TYPE OF CONSTRUCTION
OCCUPANCY TYPE 1 TYPE II TYPE III TYPE TYPE V
CLASSIFICATION SEE IV
FOOTNOTES A B AB A B HT A B
NSb UL 160 65 55 65 55 65 50 40
A,B,E,F,M,S,U
S UL 180 85 75 85 75 85 70 60
NS d1i UL 160 65 55 65 55 65 50 40
R S13R 60 60 60 60 60 60 60 60 60
S UL 180 85 75 85 75 85 70 60
For SI: 1 foot=304.8 mm.
The building height is less than the maximum 60 feet.
TABLE 504.4 a'b
ALLOWABLE NUMBER OF STORIES ABOVE GRADE PLANE
TYPE OF CONSTRUCTION
OCCUPANCY TYPE 1 TYPE II TYPE III TYPE TYPE V
CLASSIFICATION SEE FOOTNOTES
A B A B A B HT A B
NSd_h UL 11 4 3 3
4 4 4 4
R-3 S 13R 4 4 4 4 4
S UL 12 5 5 5 5 5 4 4
A_2 NS UL 11 3 2 3 2 3 2 1
S UL 12 4 3 4 3 4 3 2
The building is a 3 story building and in conformance table 504.4.
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03.2TABLE 506.2
ALLOWABLE AREA FACTOR(A,=NS,SI,S13R,or SM,as applicable)IN SQUARE FEET
OCCUPANCY TYPE OF CONSTRUCTION
SEE
CLASSIFICATI FOOTNOTES TYPE 1 TYPE II TYPE III TYPE IV TYPE V
ON A B A B A B HT A B
NSd'h
S 13R
R-3 SI UL UL UL UL UL UL UL UL UL
SM
NS UL UL 15,500 9,500 14,000 9,500 15,000 11,500 6,000
A-2 SI UL UL 62,000 38,000 56,000 38,000 60,000 46,000 24,000
SM UL UL 46,500 28,500 42,000 28,500 45,000 34,500 18,000
The largest building area is on the first floor and is 1,497 SF. The building is in
conformance with the allowable area requirements of Table 506.2.
SECTION 508 MIXED USE AND OCCUPANCY
508.1 General.Each portion of a building shall be individually classified in accordance with Section 302.1.Where a
building contains more than one occupancy group,the building or portion thereof shall comply with the applicable provisions
of Section 508.2,508.3 or 508.4,or a combination of these sections.
5083 Nonseparated occupancies.Buildings or portions of buildings that comply with the provisions of this section shall
be considered as nonseparated occupancies.
5083.1 Occupancy classification.Nonseparated occupancies shall be individually classified in accordance with Section
302.1.The requirements of this code shall apply to each portion of the building based on the occupancy classification of
that space.In addition,the If most restrictive provisions of Chapter 9 that apply to the nonseparated occupancies shall apply
to the total nonseparated occupancy area.Where nonseparated occupancies occur in a high-rise building,the most
restrictive requirements of Section 403 that apply to the nonseparated occupancies shall apply throughout the high-rise
building.
5083.2 Allowable building area and height.The allowable building area and height of the building or portion thereof
shall be based on the most restrictive allowances for the occupancy groups under consideration for the type of construction
of the building in accordance with Section 503.1.
508.4 Separated occupancies.Buildings or portions of buildings that comply with the provisions of this section shall be
considered as separated occupancies.
508.4.1 Occupancy classification.Separated occupancies shall be individually classified in accordance with Section
302.1 Each separated space shall comply with this code based on the occupancy classification of that portion of the
building.
508.4.2 Allowable building area.In each story,the building area shall be such that the sum of the ratios of the actual
building area of each separated occupancy divided by the allowable building area of each separated occupancy shall not
exceed 1.
508.4.3 Allowable height.Each separated occupancy shall comply with the building height limitations based on the type
of construction of the building in accordance with Section 503.1.
Exception: Special provisions of Section 510 shall permit occupancies at building heights other than provided in
Section 503.1.
508.4.4 Separation.Individual occupancies shall be separated from adjacent occupancies in accordance with Table
508.4.
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508.4.4.1 Construction.Required separations shall be fire barriers constructed in accordance with Section 707 or
horizontal assemblies constructed in accordance with Section 711,or both,so as to completely separate
adjacent occupancies.
This building must use separated occupancies.
TABLE 508.4
REQUIRED SEPARATION OF OCCUPANCIES(HOURS)
I-l" -3F-2,5-26, Br,F-1,
A,E I-4 , 1-2 Re U M,S-1 H-1 H-2 H-3,H-4 H-5
OCCUPANCY
S NS S NS S NS S NS S NS S NS S NS S NS S NS S NS
A,E N N 1 2 2 NP 1 2 N 1 1 2 NP NP 3 4 2 3 2 NP
I-I",1-3,1-4 — — N N 2 NP 1 NP 1 2 1 2 NP NP 3 NP 2 NP 2 NP
1-2 — — — — N N 2 NP 2 NP 2 NP NP NP 3 NP 2 NP 2 NP
N N 1` 2c 1 2 NP NP 3 NP 2 NP 2 NP
F-2,S-2n,U N N 1 2 NP NP 3 4 2 3 2 NP
Be,F-I,M,S-1 N N NP NP 2 3 1 2 1 NP
H-1 N NP NP NP NP NP NP NP
H-2 N NP 1 NP 1 NP
H-3,H-4 1d NP 1 NP
H-5 N NP
S=Buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
NS=Buildings not equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
N=No separation requirement.
NP=Not permitted,
a See Section 420.
b.The required separation from areas used only for private or pleasure vehicles shall be reduced by 1 hour but not to less than
1 hour.
c. See Section 406.3.4.
d.Separation is not required between occupancies of the same classification.
e. See Section 422.2 for ambulatory care facilities.
The horizontal separation assembly between the existing restaurant and the second floor
dwelling unit is required to be 1 hour.
SECTION 1013 EXIT SIGNS
1013.1 Where required.Exits and exit access doors shall be marked by an approved exit sign readily visible from any
direction of egress travel.The path of egress travel to exits and within exits shall be marked by readily visible exit signs to
clearly indicate the direction of egress travel in cases where the exit or the path of egress travel is not immediately visible to
the occupants.Intervening means of egress doors within exits shall be marked by exit signs.Exit sign placement shall be such
that no point in an exit access corridor or exit passageway is more than 100 feet(30 480 mm)or the listed viewing distance
for the sign,whichever is less,from the nearest visible exit sign.
Exceptions:
1. Exit signs are not required in rooms or areas that require only one exit or exit access.
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2. Main exterior exit doors or gates that are obviously and clearly identifiable as exits need not have exit signs where
approved by the building official.
3. Exit signs are not required in occupancies in Group U and individual sleeping units or dwelling units in Group R-1,
R-2 or R-3.
Exit signs are not required within the dwelling units.
TABLE 1017.2 EXIT ACCESS TRAVEL DISTANCE'
WITHOUT WITH
OCCUPANCY SPRINKLER SPRINKLER
SYSTEM(feet) SYSTEM(feet)
A,E,F-I.M,R,S-1 200 250"
All exit access travel distances are in conformance with Table 1017.2.
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