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(a) To compute the square feet of floor area of public halls in multiple dwellings having an unenclosed stair, the floor area of the public hall and the horizontal area of the stair opening shall be added. At the lowest story, where there is an ascending flight of stairs but no descending flight of stairs, only the area of the actual flight of stairs shall be added to the floor area of such lowest story.
(b) To compute the square feet of floor area of a fire-stair or a fire-tower in a multiple dwelling, one-half of the horizontal area of such fire-stair or fire-tower, measured from the wall of the stair landing on one level to the wall of the stair landing on the next level, shall be deemed to be the floor area at each such level.
(c) Where the light from the fixture at the highest story provides adequate illumination, in the opinion of the department, no lighting fixture shall be required at the roof level of the stair bulkhead.
Subchapter M: Entrance Doors, Locks and Intercommunication Systems
(a) Bulkhead doors and scuttles shall have no key locks and shall not be locked by a key at any time. The only permissible and acceptable means of securing a bulkhead door or scuttle is by means of a movable bolt or hook on the inside.
(b) Subdivision (n) of 28 RCNY § 25-174 in its last un-numbered paragraph provides as follows: "All passageways required under these rules shall be not less than seven feet (7'0") in height and not less than three feet (3'0") in width and shall at all times be kept clear and unobstructed. Doors and gates at the end of such passageways are prohibited, except that a door or gate equipped with an approved-type knob or panic bolt which shall be readily openable from the inside will be permitted at the building line. Doors and gates provided with key locks or padlocks are prohibited."
(c) Where an entrance door leading from a vestibule to the main entrance hall or lobby is equipped with one or more automatic self-closing and self-locking doors, the entrance door from the street to the vestibule need not be equipped with automatic self-closing and self-locking doors.
(d) Every entrance from the street, court, yard or cellar to a class A multiple dwelling erected or converted after January 1, 1968 containing eight or more apartments shall be equipped with automatic self-closing and self-locking doors. Such multiple dwelling, as aforesaid, shall also be equipped with an intercommunication system to be located at the required main entrance door.
(e) On or after January 1, 1969, every entrance from the street, court, yard or cellar to a class A multiple dwelling erected or converted prior to January 1, 1968 containing eight or more apartments, provided that a majority of tenants in occupancy request or consent in writing, shall be equipped with automatic self-closing and self-locking doors and shall also be equipped with an intercommunication system.
(f) Every self-locking door required under this section shall be installed and maintained so as to be readily openable from the inside without the use of keys.
(g) The minimal devices acceptable for the intercommunication system shall be a bell or buzzer system, or a speaking and listening device to permit communication by voice between the occupant of each apartment and a person outside such required main entrance door, and a return buzzer mechanism to release or open the lock to the aforesaid required door.
(h) The bell and intercommunication system shall be located at the required main entrance door so that a person may readily reach the door when the unlocking buzzer is activated.
(i) No push button device shall be more than six feet from the floor and the speaking and listening device shall be installed to be not less than four feet and not more than five feet from the floor.
(j) The device or devices for the intercommunication system installed in the apartment shall be readily accessible to the occupant.
(k) The device or devices for the intercommunication system installed hereunder shall be of a type and kind approved by the Department of Buildings or previously approved by the Board of Standards and Appeals.
(1) Devices which have been previously installed and which are in good condition and performing in an adequate manner may, in the discretion of the department, be accepted.
Subchapter N: Installation of Security Items In Multiple Dwellings
(a) These new peepholes, or door interviewers, must bear a label showing the approval of the Department of Buildings or the previous approval of the Board of Standards and Appeals.
(b) The peepholes must be so located as to enable a person in such housing unit to view from the inside of the entrance door any person immediately outside.
(c) The distance above the inside finished floor to the center of the peephole shall be approximately 5 feet.
(d) The cutout shall not affect the adequacy of any stiffening member of the door.
(e) Peepholes installed prior to the enactment of the legislation will be acceptable unless the cutout for the peephole has affected the adequacy of any stiffening member of the door.
(a) All electrical work shall be done in accordance with the requirements and approval of the Department of Buildings.
(b) The installation shall be a separate circuit or connected to the house line servicing the public halls.
(c) The lights shall be encased in a metal guard or shatterproof globe.
(d) The lights of at least 50 watts of incandescent or equivalent illumination shall be placed on each side of the front entrance-way at a height of between 7 to 11 feet above floor level adjacent to such entrance-way and adequate to light same.
(a) Mirrors shall be made of polished metal.
(b) Mirrors shall be of such size and so located on the car wall opposite the car entrance so that a person entering the elevator may have a complete view of the interior of the car. It shall not be necessary to provide a view of the floor and ceiling.
(c) The mirror shall be so located as not to interfere with or endanger passengers in the elevator.
(d) Mirrors shall be mounted and secured so that they cannot be readily removed by the public.
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