O-1954-476 - Laserfiche WebLink

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,,...---' . e , t , '~r -37- . 6. TO BE: CAR.1UEI: 'ID OR ABOVE THE ROOF. Fire walls and party walls shall extend at least 3 feet above the roof; except imere the roof is of fireproof or semifireproof construction in which case the fire walls ~ party walls shall be carried up tightly against '~he ~derside of the roo! slabs. 7. SIZE AND PROT]CTION OF OPENmGS. (a) Except in sprinldered buildings, no opening in a fire wall shall l~xceed 120 square feet in area with no dimension greater than 12 feet, and the aggregate width of ell openings at any level shall not exceed 25 per cent of the length of the wall. (b) Every opening in a required fire wall shall be protected on each side of the wall with an approved automatic or self-closing fire door; provided that when a fire wall serves also as a horizontal exit it shall have no openings other than door openings not exceeding 48 square feet ~ area, and one of the fire d:>ors at each opening shall be a self-closing fire door. SECTION 30. PARAPl~S. (a) Ex:cept as lisiied below" parapets shall be provided on all fire . l'lCllls, party walls, and ex terior walls ofmasonry or reinforced concrete. Parapets are not ~equired on: (1) Walls connecting with roofs of fireproof construction or semifire- proof construction; (2) A wall of a bu:Llding the roof of which is at least three feet lower than the roof of, or any opening in" an adjacent building wall; (3 ) Walls facing 011 a street having a width of 30 feet or more; (4) Walls of a bui:.ding wllui.ch is 30 feet or more distant in all directions fron' property lines and from other buildings on the same property; (5) Walls of a building which is 30 feet or more distant in all directions from prapel:'ty lines but less than 30 feet distant to one or more buildings on the same property" where the total area of the buildings vvithin 30 feet of each other does . not exceed Ji times the allowable area for anyone of the buildings considered; . (6) Walls of a deta~hed &velling, or of a building not exceeding 1,000 square fe:!t in area; (7) Walls of a building where the roof has an angle of more than 200 loti th the horizontal. (b) . In dwellings and in buildings in which 8-inch walls are permitted, such parapets shall be not leS~1 than 8 inches thick and carried at least tlvo feet abo're the roof.