Subchapter 1 Administration and Enforcement

Subchapter 2 Definitions

Subchapter 3 Occupancy and Construction Classification

Subchapter 4 Building Limitations

Subchapter 5 Fire Protection Construction Requirements

Subchapter 6 Means of Egress

Subchapter 7 Special Uses and Occupancies

Subchapter 8 Places of Assembly

Subchapter 9 Loads

Subchapter 10 Structural Work

Subchapter 11 Foundations

Subchapter 12 Light, Heat, Ventilation and Noise Control

Subchapter 13 Mechanical Ventilation, Air Conditioning, and Refrigeration Systems

Subchapter 14 Heating and Combustion Equipment

Subchapter 15 Chimneys and Gas Vents

Subchapter 16 Plumbing and Gas Piping

Subchapter 17 Fire Alarm, Detection and Extinguishing Equipment

Subchapter 18 Elevators and Conveyors

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The provisions of this article establish building access requirements; shall regulate the division of the city of New York into fire districts and control the occupancy groups and construction classes permitted therein; shall regulate permissible building areas, height and projections beyond the street line and shall establish special flood hazard areas and a regulatory flood datum in the city of New York and regulate permissible occupancies and construction or other improvement below such flood datum within such flood hazard areas.
The provisions of reference standard RS-4 shall be a part of this subchapter.
For definitions to be used in the interpretation of this subchapter, see subchapter two of this chapter.
Every building, exclusive of accessory buildings, shall have at least eight per cent of the total perimeter of the building fronting directly upon a street or frontage space. For the purposes of this section, building perimeter shall be measured at that story having the maximum enclosed floor area.
Provisions shall be made for access by the fire department to every building as follows:

(a) Above Grade. Access shall be provided directly from the outdoors to each story below a height of one hundred feet except to the first story or ground floor, by at least one window or readily identifiable access panel within each fifty feet or fraction thereof of horizontal length of every wall that fronts on a street or frontage space. Windows shall be openable or breakable from both the inside and the outside, and shall have a size when open of at least twenty-four inches by thirty-six inches. Panels shall be openable from both the inside and outside and shall have a height when open of forty-eight inches and a width of at least thirty-two inches. The sill of the window or panel shall not be higher than thirty-six inches above the inside floor.

(b) Below grade. Access shall be provided directly from the outdoors to the first basement or cellar story below grade, except as provided in paragraphs two, three and four of this subdivision, within each one hundred feet or fraction thereof of horizontal length of every wall that fronts on a street or frontage space. Such access shall be by stairs, doors, windows or other means that provide an opening forty-eight inches high and thirty-two inches wide, the sill of which shall not be higher than thirty-six inches above the inside floor. If an areaway is used to provide below grade access, the minimum horizontal dimension shall be at least one-third the depth of the areaway or six feet whichever is less.

(1) Access to additional stories below grade is not mandatory since they are required to be sprinklered as provided in subdivision k of section 27-954 of article four of subchapter seventeen of this chapter.

(2) One and two-family dwellings need not provide direct access.

(3) Any building classified in occupancy group J-2 not more than three stories in height and with not more than two dwelling units on any story need not provide direct access when such first basement or cellar story is used for dwelling units or for uses accessory to the residential use in the building.

(4) Except as provided in paragraph three of this subdivision, for buildings classified in occupancy group J-1 or J-2 only one direct access from the outdoors to the first basement or cellar story consisting of a stair or door shall be required when such story is used for dwelling units or for uses accessory to the residential use in the building.

(c) Signs. Where wall signs are erected to cover doors or windows of existing buildings, access panels shall be provided as necessary to comply with the requirements of subdivisions (a) and (b) of this section.

(d) Location. Wherever practicable, one access opening in each story shall provide access to a stairway, or where there is no stairway at the exterior wall, one access opening in each story shall be located as close as practicable to a stairway.

(e) Exemptions. The provisions of subdivisions (a) through (d) of this section shall not apply to any story that is completely protected by an automatic sprinkler system conforming to the construction requirements of subchapter seventeen.
As set forth in this subarticle, buildings shall be provided with accessible routes, usable or adaptable space and accessible elements and facilities to make buildings accessible and usable by, and to establish a safe environment for, all categories of people having physical disabilities.
The pertinent provisions of reference standard RS 4-6 shall be part of this subarticle.
For definitions to be used in the interpretation of this subarticle, see section 27-232 and reference standard RS 4-6.
(a) This subarticle shall apply to all buildings or portions thereof and their accessory areas, except as specified in this subarticle. (b) The provisions of this subarticle shall be supplemental to and take precedence over less restrictive provisions of this code in the following articles and sections and in their referenced national standards: (1) Subchapter four, building limitations a. §27-308 ramps (2) Subchapter six, means of egress a. §27-357 (d) building access b. §27-371 (e) door opening width c. §27-377 ramps (3) Subchapter seven, special uses and occupancies a. Article ten, public garages b. Article eleven, open parking structures c. Article thirteen, open parking lots d. Article fifteen, swimming pools (4) Subchapter eight, places of assembly a. §27-531 Seating in assembly spaces (5) Subchapter sixteen, plumbing and gas piping a. Reference standard RS-16, paragraph (c) of section P104.1 Facilities for physically handicapped b. Reference standard RS-16, paragraph (d) of section P104.1 accessibility (6) Subchapter seventeen, fire alarm, detection and extinguishing equipment c. Article six, smoke detecting devices (7) Subchapter eighteen, elevators and conveyors a. Reference standard RS 18-1 (c) Facilities in existence on the effective date of this subarticle which comply with the requirements of this subarticle or of other provisions of this code relating to the provision of facilities for people with physical disabilities shall not be diminished to less than those which would be required were the building in which the facilities are located hereafter erected.
(a) Primary entrance(s). - The primary entrance(s) for buildings shall be accessible, except for buildings classified in occupancy group A, J-3 and/or other spaces which normally are not frequented by the public or employees of the facility. (b) Exterior accessible route. - Except as provided in this subarticle, buildings shall be provided with an exterior accessible route to permit entry at the primary entrance(s) of the building from the following locations: (1) Public street or sidewalk (2) Driveways (3) Parking areas (4) Passenger loading zones (5) Transportation stops (c) Interior accessible route. - Except as provided in this subarticle, in buildings having (an) interior route(s) to one or more of the following spaces or facilities, such route(s) shall be (an) interior accessible route(s) from the entrance(s) usable by all categories of people having physical disabilities to adaptable or usable dwelling units and other spaces and facilities on the same premises including but not limited to: (1) Laundry rooms (2) Refuse disposal locations (3) Mailbox areas (4) Recreational, assembly and tenants' meeting rooms (5) Storage rooms (6) Management offices (7) Stores (8) Dining areas (9) Parking areas Where the only route to one or more of such spaces or facilities is an exterior route, such route shall be accessible. (d) Path of travel. - The path of travel in exterior and interior accessible routes shall provide unobstructed safe access and applicable items in such path of travel shall comply with the requirements set forth in reference standard RS 4-6. (e) Elevators. - Where provided, all elevators shall comply with subchapter eighteen, reference standard RS 18-1, where an interior accessible route is required. (f) Assembly occupancies. - For assembly occupancies having a mezzanine or balcony which provides a similar view as that from the main floor, accessibility to the mezzanine or balcony shall not be required provided toilet rooms are on the main floor. (g) Restaurants. - For restaurants, dining rooms and similar occupancies having the same services on levels other than the main floor, accessibility to such levels shall not be required provided that toilet rooms are on the main floor. (h) Storage. - For buildings in which the intended use is the storage of goods or merchandise, the only requirement shall be accessibility at the primary entrance and an interior accessible route to offices where business may be conducted. (i) Non-grade stories of small non-residential buildings. - The following non-residential buildings or parts thereof are exempt from the provisions of this subarticle concerning requirements for people having physical disabilities, to the extent set forth in subdivisions (1) and (2) of this subsection: (1) construction of such new buildings the total floor area of which is two thousand five hundred square feet or less; (2) alterations to such building already existing where the alterations are being made to an above-grade story having a total floor area of two thousand five hundred square feet or less or to a below-grade story having a total floor area of two thousand square feet or less. Notwithstanding the foregoing, floor areas frequented by the public for assembly, governmental, public utility or health facility purposes shall not be exempted unless equivalent functional accessible facilities are provided on the first story. **(A) Where the floor area is more than two thousand five hundred square feet but less than five thousand square feet, a vertical wheelchair lift enclosed in construction having the required fire-resistance rating and connecting not more than two contiguous levels is permitted in lieu of an accessible route as set forth in reference standard RS 4-6. **(B) Where the below-grade cumulative floor area is more than two thousand square feet but not more than five thousand square feet, a vertical wheelchair lift enclosed in construction having the required fireresistance rating and connecting not more than two contiguous levels is permitted in lieu of an accessible route as set forth in reference standard RS 4-6. **(j) and (k) enacted but (A) and (B) probably intended as subparts of §27-292.5( i)(2)
(1) The commissioner may waive the requirements of this subarticle or of subdivision (d) of section 27-357 of this code for the alteration of existing buildings, and for any new building for which a formal application together with plans required by such application was filed with an agency of the city or with the battery park city authority prior to September first, nineteen hundred eighty-seven, when such application was required by law or regulation to be approved by such agency; provided, however, that such waiver would not significantly adversely affect provisions for health, safety and security and that equally safe and proper alternatives are prescribed and, further, that such waiver is based upon a specific finding that strict compliance with the requirement: (a) would create an undue economic burden; or (b) would not achieve its intended objective; or (c) would be physically or legally impossible; or (d) would be unnecessary in light of alternatives which insure the achievement of the intended objective or which, without a loss in the level of safety, achieve the intended objective more efficiently, effectively or economically; or (e) would entail a change so slight as to produce a negligible additional benefit consonant with the purposes of this code. (2) Each application for a waiver under subdivision one of this section shall be made to the commissioner in writing, setting forth each requirement sought to be waived and the specific reason or reasons therefor. The commissioner shall determine, under all of the circumstances presented by such application, which of such requirements may appropriately be waived. The commissioner shall render such determination in a writing, which shall set forth in detail, the commissioner's findings and conclusions with respect to each requirement sought to be waived. A copy of such written determination shall be forwarded to the applicant. Such written determination shall be filed with the department and shall be available for public inspection. (3) The mayor's office for the handicapped or its successor agency shall be consulted by and shall advise the commissioner concerning each application for a waiver under this section. *Local Law 65-1988.
The commissioner upon good cause may waive the requirements of this subarticle for the construction of buildings or spaces, or for the alteration of existing buildings to meet the special requirements of other city departments in regard to any of the following: (a) Firehouses (b) Correctional facilities (c) Cargo handling facilities on the waterfront (d) Wholesale food markets
(a) General requirements. (1) Adaptable dwelling units are units that contain habitable rooms, kitchens, kitchenettes and bathrooms in residential buildings other than in occupancy group J-3 which when constructed are on an accessible route (except as set forth in this subdivision) and are constructed and equipped as defined in section 27-232 and as set forth in this subarticle so that they can be converted to be used, with a minimum of structural change, by all categories of people having physical disabilities. (2) Such units shall be provided with door widths and clear floor spaces for making dwelling units usable as set forth in reference standard RS 4-6 when occupied by people having physical disabilities. (3) Interior access, floor surfaces, adaptable kitchens, adaptable kitchenettes and adaptable bathrooms in these dwelling units shall comply with the requirements set forth in reference standard RS 4-6. (4) Where an adaptable dwelling unit occupies two or more stories within itself, accessibility shall only be required at the first story of such dwelling unit provided that: a. The second story is accessible from without; or that b. Equivalent accessible functional facilities are provided on the first story; or that c. The stair within the dwelling unit has a minimum width of three feet. (b) Number of adaptable dwelling units. - (1) All dwelling units in buildings with elevators shall be adaptable unless usable dwelling units are provided in accordance with section 27-292.9. (2) At least one but not less than twenty-five percent of the total number of dwelling units in buildings without an elevator, which have dwelling units on the ground floor and which contain three or more dwelling units, shall be adaptable, unless usable dwelling units are provided in accordance with section 27-292.9. Such adaptable dwelling unit(s) shall be located on the ground floor. Where determination by percentage results in a number containing a decimal of 0.5 or more, the next higher number shall be used, but such number shall not exceed the number of dwelling units actually proposed for the ground floor. (c) Adaptable bathrooms, kitchens and kitchenettes.- Adaptable bathrooms, kitchens and kitchenettes within adaptable dwelling units shall be constructed and equipped in accordance with requirements set forth in reference standard RS 4-6 with respect to the following: Access doorway or opening Clear floor space Floor surface Bathroom, kitchen and kitchenette facilities and controls capable of being made usable Space and utilities for usable range, (or cooktop or oven), refrigerator/freezer, (dishwasher if provided). Such items shall include water closet and toilet paper dispenser, lavatory and removable base cabinet, mirrors, medicine cabinet, bathtub and controls, bathtub and shower enclosure, reinforced areas for grab bars, clearance between opposing base cabinets, counter tops, appliances and walls, adjustable or replaceable sink and removable base cabinet, as well as storage cabinets, drawers and shelves. (d) Washing machines and clothes dryers within adaptable dwelling units. - Where washing machines and clothes dryers are located within adaptable dwelling units, they shall comply with or be capable of being converted to the requirements set forth in reference standard RS 4-6. (e) Emergency warning devices within adaptable dwelling units. - Emergency warning devices within adaptable dwelling units shall be capable of being converted to audible and visual indication as required and to conform to the requirements set forth in subchapter seventeen, article six, reference standard RS 17-11, reference standard RS 17-12 and reference standard RS 4-6.
(a) General requirements. - (1) Usable dwelling units are units in residential buildings in other than occupancy group J-3 which are accessible, constructed and equipped, as defined in section 27-232 and as set forth in this subarticle, so as to be usable by people having physical disabilities. A usable dwelling unit shall be established by conversion from an adaptable dwelling unit when the unit becomes occupied by a person having a physical disability. (2) Access, storage, controls, windows, doors, floor surfaces, kitchens, kitchenettes and bathrooms, appliances and emergency warning devices in these units shall comply with the requirements set forth in reference standard RS 4-6. (b) Number of usable dwelling units. (1) Hotels. - In lieu of the requirements of section 27-292.8 in buildings in occupancy group J-1 having ten or more units, not less than five percent of the total number of units shall be constructed as usable units. In all buildings in occupancy group J-1 there shall be available portable smoke detectors of both audible and visual design. The number of detectors available shall be three percent of the number of sleeping rooms with a minimum of one operational detector per building. Proprietors shall post conspicuously a sign at least three inches in height, at the main desk or other similar station, advising of the availability of such detectors. Such detectors shall have a flash frequency range of sixty to one hundred twenty flashes per minute; and, where the average illuminance with motion present is more than twenty lumens per square foot, the visible signaling appliance shall have an effective intensity rating between one hundred and one thousand candela. Hard wiring of audible/visual detectors into an existing central closed-circuit alarm system shall be permitted in lieu of such portable detectors. Where determination by percentage results in a number containing a decimal of 0.5 or more, the next higher number shall be used. Notwithstanding the foregoing, entrance doors to all dwelling units in occupancy group J-1 having ten or more units, and to all bathrooms in such units, shall be no less than thirty-two inches in width. (2) Adult residential care facilities.- All units in adult residential care facilities shall be usable. "Adult residential care facility" shall mean a family type home for adults, a shelter for adults, a residence for adults, an enriched housing program or an adult home, which contains three or more dwelling units and which provides board and temporary or long-term residential care and services to adults who, though not requiring continual medical or nursing care, are by reason of physical or other limitations associated with age, physical or mental disabilities or other factors unable or substantially unable to live independently. Such facilities shall be considered to be within occupancy group J-2. (c) Usable bathrooms, kitchens and kitchenettes. - Usable bathrooms, kitchens and kitchenettes within usable dwelling units shall be constructed and equipped in accordance with requirements set forth in reference standard RS 4-6 with respect to the following: Access doorway or opening Clear floor space Floor surface Bathroom, kitchen and kitchenette facilities and controls Space and utilities for usable range, (or cooktop or oven), refrigerator/freezer, (dishwasher if provided). Such items shall include usable water closet and toilet paper dispenser, lavatory and base cabinet, bathtub and controls, bathtub and shower enclosure, grab bars, clearance between opposing base cabinets, counter tops, appliances and walls, sink and base cabinet. (d) Washing machines and clothes dryers within usable dwelling units. - Where washing machines and clothes dryers are located within usable dwelling units, they shall comply with or be capable of being converted to the requirements set forth in reference standard RS 4-6. (e) Emergency warning devices within usable dwelling units. - Emergency warning devices within usable dwelling units shall be capable of being converted to audible and visual indication as required and to conform to the requirements set forth in subchapter seventeen, article six, reference standard RS 17-11, reference standard RS 17-12 and reference standard RS 4-6.
(a) Functional spaces and rooms. (1) Except as otherwise provided in section 27-292.5, spaces and rooms intended for general public and occupant use shall be accessible and usable. Such spaces and rooms include but are not necessarily limited to the following: Mercantile spaces Industrial spaces Business spaces Assembly spaces Educational spaces Institutional spaces Toilet rooms Bathrooms, bathing facilities, shower rooms. (2) Doors and floor surfaces in usable spaces shall comply with the requirements set forth in reference standard RS 4-6. (3) Where seating, tables and/or work stations are provided in usable spaces, at least one and not less than five percent shall comply with the requirements set forth in reference standard RS 4-6. (b) Toilet rooms. - (1) The location and number of water closets, urinals and lavatories shall be provided in accordance with the requirements set forth in table RS 16-5. (2) Except where exempted in subdivision (i) of section 27-292.5 or section 27-292.6, facilities for people having physical disabilities shall be provided in toilet rooms or in a readily accessible location. Where such toilet room is designed for use by not more than one person at a time and has provision for locking from the inside, such toilet room shall be permitted to be used by either sex. (3) Where toilet rooms are not accessible by elevator, they shall be located so that people with physical disabilities need not travel more than one story thereto by ramp. (c) Bathing facilities. - (1) The location and number of plumbing fixtures shall be provided in accordance with the requirements set forth in table RS 16-5 and in reference standard RS 4-6. (2) Each required bathing facility shall be accessible and at least one of each type of fixture or accessory that is provided in such bathing facility shall comply with the requirements set forth in table *RS 16-4 and in reference standard RS 4-6. *As enacted but RS 16-5 probably intended.
(a) Assembly spaces other than places of assembly shall be provided with a minimum of accessible wheelchair viewing positions as follows:
Capacity of Assembly
Space
Number of Viewing
Positions
1 to 25 Minimum 1
26 to 50 Minimum 2
51 to 74 Minimum 3
(b) Places of assembly shall be provided with accessible wheelchair viewing positions in accordance with subparagraph h of paragraph (1) of subdivision (a) of section 27-531. (c) Size and placement of wheelchair location, surfaces, access to performing area and listening systems, where required, shall comply with the provisions of reference standard RS 4-6. These positions may be utilized by persons who do not use wheelchairs provided that the positions are delineated on the approved seating plans, the seating is readily removable and the positions are unsold one full working day before the performance.
Where public toilet rooms are provided, there shall be at least one water closet stall and lavatory fixture for each sex which is accessible to and usable by people having physical disabilities and complies with the requirements of paragraph (c) of section P104.1 of reference standard RS 16-1 and reference standard RS 4-6.
(a) Location and number of drinking fountains shall be provided in accordance with the requirements set forth in table 16-5. (b) At least one drinking fountain on a story on which drinking fountains are provided shall be accessible and comply with the requirements set forth in reference standard RS 4-6. (c) Where outside drinking fountains are provided, at least one shall be accessible and comply with the requirements set forth in reference standard RS 4-6.
At each location where public telephones are provided, at least one telephone shall be accessible and usable by people who use wheelchairs and at least one telephone shall be accessible and usable by persons with hearing impairment, and each such accessible telephone shall comply with the requirements set forth in reference standard RS 4-6.
Where emergency warning systems are provided in spaces used by people having physical disabilities such systems shall comply with the requirements set forth in reference standard RS 4-6. Portable audible/visual smoke detecting devices in existing group J-1 occupancies shall comply with the provisions of paragraph (1) of subdivision (b) of section 27-292.9.
Where controls and operating mechanisms for light switches, dispensers, alarms and other similar devices are provided, they shall be accessible and comply with the requirements set forth in reference standard RS 4-6.
Tactile warnings shall be provided at hazardous locations on floors, doors, stairs, hazardous vehicular areas and pools, and shall comply with applicable requirements as set forth in reference standard RS 4-6.
(a) Symbols of accessibility shall be provided at the following locations: Parking spaces designated as reserved for people having physical disabilities Passenger loading zones Public toilet and bathing facilities Drinking fountains Public telephones (b) Information and directional signage shall be provided where deemed necessary. (c) Symbols and characters shall comply with the applicable requirements set forth in reference standard RS 4-6.
(a) Where parking areas or garages are provided, at least one parking space but not less than five percent of the total number of parking spaces provided shall be suitable for use by people having physical disabilities. Where determination by percentage results in a number containing a decimal of 0.5 or more, the next higher number shall be used. (b) Location, space, size and signage for parking spaces suitable for use by people having physical disabilities shall comply with provisions set forth in reference standard RS 4-6.
Where passenger loading zones are provided, location and access aisles for at least one vehicle (with respect to multiple dwellings) or zones (with respect to other buildings) shall comply with the requirements set forth in reference standard RS 4-6. *Local Law 58-1987.
The following city areas are hereby established as being inside the fire districts:

(a) All of the borough of Manhattan.

(b) All of the borough of Bronx.

(c) All of the borough of Brooklyn.

(d) Such portions of the boroughs of Staten Island and Queens as are indicated on the "fire district maps" (reference standards RS4-1 and RS4-2).
All areas not included inside the fire districts shall be designated as outside fire districts.
Any building located on the boundary line of a fire district, so that it is both inside and outside the district, shall be of a type of construction required for the fire districts if more than twenty-five per cent of the total floor area of the building is located therein.
No buildings in those combinations of construction classes and occupancy groups prohibited by tables 4-1 and 4-2 shall be erected inside the fire districts or shall be moved from outside to inside the fire districts, or from one lot to another inside the fire districts. No building or space classified in occupancy group J-1 or J-2 may be located on a lot containing a building classified in construction group IE, IID or IIE.
The following constructions shall be exempt from the provisions of section 27-296 of this article:

(a) One- or two-family dwellings. One- or two-family detached or semi-detached dwellings of two stories or less in height and two thousand five hundred square feet or less in area located within zoning residence districts may be constructed or reconstructed of construction groups II-D combustible materials, or if damaged for any cause, only the damaged portions shall be required to be reconstructed to conform to II-D construction. In addition, one-family dwellings located within zoning residence district anywhere in the city, may be of combustible group II-E construction in conformance with the area and height limits established by tables 4-1 and 4-2.

(b) Fences. Fences not over six feet high may be erected of wood or other combustible material.

(c) Storm enclosures, bay windows, etc. Storm enclosures, bay windows and similar appendages may be constructed of combustible materials in accordance with the provisions of section 27-336 of article four of subchapter five of this chapter.

(d) Accessory buildings for open parking lots. Parking lot offices and similar accessory buildings not more than ten feet high and not more than one hundred fifty square feet in area may be constructed of combustible materials when on the same lot or accessory to a lot used for motor vehicle parking, and when located at least six feet from any lot line or building.

(e) Temporary structures. Temporary platforms, reviewing stands, and similar miscellaneous structures may be constructed of combustible materials and used for a limited period of time, subject to the approval of the commissioner.

(f) Greenhouse. Greenhouses may be constructed of combustible materials when accessory to a one- or two-family dwelling on the same lot and when located at least six feet from any lot line or building.

(g) Roof structures. Cooling towers, antenna supports, and other roof structures may be constructed of combustible materials in accordance with the provisions of section 27-338 of subchapter five of this chapter.

(h) Bins, tanks, and towers. Coal and material bins, water towers, tank structures, and trestles may be constructed of wood planking and timbers of dimensions not less than as required for class II-A construction when not over thirty-five feet high and having an exterior separation of a least thirty feet.

(i) Signs. Ground signs, wall signs, roof signs, and temporary signs may be constructed of combustible materials within the limitations established in article eighteen of subchapter seven of this chapter.
No building inside the fire districts may be increased in area or height to exceed the limitations of tables 4-1 and 4-2.
No buildings in those combinations of construction classes and occupancy groups prohibited by tables 4-1 and 4-2 shall be erected outside the fire districts. No building or space classified in occupancy group J-1 or J-2 may be located on a lot containing a building classified in construction group IE, IID or IIE. No building classified in construction group IE, IID, or IIE shall be located on a lot containing a building or space classified in occupancy group J-1 or J-2.
No building outside of the fire districts may be increased in area or height to exceed the limitations of tables 4-1 and 4-2.
No building or building section shall be constructed or altered so as to exceed the area limits established by tables 4-1 and 4-2 based on the occupancy group classification of the building or building section, except as these may be specifically modified by other provisions of this code.
No occupancy within a building or building section shall be constructed or altered so as to exceed in total cumulative area the area limits established by tables 4-1 and 4-2, except as these may be specifically modified by other provisions of this code.
When a building has more than twenty-five per cent of the total perimeter of the building fronting directly upon a street or frontage space, the tabular areas listed in tables 4-1 and 4-2 may be increased 1.33 per cent for each one per cent of such excess frontage.
Any building existing on December sixth, nineteen hundred sixty-eight that exceeds the maximum allowable area permitted under the provisions of this section, may be enlarged if the addition is separated from the existing building by a fire division meeting the requirements of subchapter five of this chapter, and if the additional area does not exceed the limits established by tables 4-1 and 4-2 for the specific occupancy group and construction class.
* TABLE 4-1 AREA AND HEIGHT LIMITATIONS FOR UNSPRINKLERED BUILDINGS AND SPACES


Notes for Table 4-1:

Tabulated areas are given in sq. ft. and establish maximum gross area permitted on any one story within a building or fire area. See section 27-303 and subdivision (e) of section 27-328 for permissible area increases. Tabulated heights are given in feet and number of stories (in parentheses).

a See section 27-297 for construction exemptions.

b See article eleven of subchapter seven of chapter one of this title for area and height limitations of open parking structures.

c See paragraph two of subdivision (b) of section 27-548 for grandstand limitations.

d See subdivision (c) of section 27-339 for area limitations for existing office buildings one hundred feet or more in height with mechanical ventilation and/or air-conditioning systems that serve floors other than the floor on which the equipment is located.

e Spaces in occupancy group A solely due to their containing gas distribution piping at pressure levels above fifteen psig may be unsprinklered and conform with the area and height limitations set forth in table 4-2, provided other fire protection requirements set forth in section 27-404 and subchapters five and seventeen of chapter one of this title are met.

f See section 27-954 for area limitations for buildings less than seventy-five ft. in height.

g See subdivisions (u) and (v) of section 27-954 for requirements pertaining to F-4 spaces within J-1 buildings, catering establishments and banquet halls with occupant load of three hundred or more persons.

*Local Law 10-1999.


TABLE 4-2 AREA AND HEIGHT LIMITATIONS FOR SPRINKLERED BUILDINGS AND SPACES
Notes for Table 4-2:

Tabulated areas are given in square feet and establish maximum gross area permitted on any one story within a building or fire area. See section 27-303 for permissible area increases. Tabulated heights are given in feet and number of stories (in parentheses).

p>a See section 27-297 for construction exemptions.

b See article eleven of subchapter seven of this chapter for area and height limitations of open parking structures.
No building or building section shall be constructed or altered so as to exceed the height limits established by tables 4-1 and 4-2 based on the occupancy group classification of the building or building section, except as these may be specifically modified by other provisions of this code.
In applying the provisions of this code governing height limits, the following appurtenant structures shall not be included in the height of the building unless the aggregate area of all such structures, exclusive of any solar thermal and solar electric (photovoltaic) collectors and/or panels and their supporting equipment, exceeds thirty-three and one-third percent of the area of the roof of the building upon which they are erected:

(a) Roof tanks and their supports.

(b) Ventilating, air conditioning, combined heat and power systems, and similar building service equipment.

(c) Roof structures, bulkheads, and penthouses.

(d) Chimneys.

(e) Parapet walls four feet or less in height.
Notwithstanding any inconsistent provision of section 27-306 of this code, solar thermal and solar electric (photovoltaic) collectors and/or panels and their supporting equipment that exceed 33 and one-third percent of the area of the roof of the building upon which they are erected shall not be included in the height of a building or considered an additional story.
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