O-1954-476 - Laserfiche WebLink

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, .---... \. :. . - 21- 13 . HANGING OF OOORS. (a) The doors of required doorways shaJ.l be so hung and arranged . that ,men fully opened they will not in any way d:i.m:i.nish or obstruct the re- quired vridth of hallvlay, stair, or other means of exit. (b) Doorways opening onto a street or to a court or open space conmnmicating with a street, and serving as a required exit way for more than 40 persons, shall have the doors, including the doors of vestibules, so hung as to swing open in the direction of ex it traVel; but this requirement shall not be construed to prohibit the use of sliding doors in stabiles, garages, or shipping and receiving rooms of wsiness buildings and storage buildings. (c) All ex it doors in rooms occupied by 40 or more persons and aJ.l , ,r~ , "",,:.. "- , exit doors in exit i-vays from places of assembly shall be hung to svdng open in the dii'ection of exit travel. (d) No eXit door shall open immediately on a flight of stairs, but a landing the length and width of which are not less than the width of such door, shall be provided between such door and such stairs. (e) Where the size of the exit doorway requires two doors in the same opening, the doors shall be so hung as to require no center post in the opening for the doors to close against. 14. LIGHTING. Required stai.rways, hallways and other means of exit, including exterior open spaces to or through which exi ts lead, shall be kept adequately lighted at all times that the building served thereby is occupied. SECTION 19. FIREPROOF', SEMIFmEPROOF AND HEAVY TIMBERC<DNSTR UCTION. Fireproof, semifireproof and heavy timber construction shall conform to generally accepted good practice. The 1949 Edition of The NationaJ. Building Code recommended by the National Board of Fire Underwriters shall be deemed the generally accepted good. practice for these types of construction. SECTION 20. ORDINARY CONSTRUCTION. i. DEFINITlOO. Ordinary cons'lruction, as applied to buildings J means that in vnich exterior walls and bearing walls are of masonry or of reinforced concrete J and i.n Wl ich the stiruct'lU'aJ. member s J including columns J floors and roof construction, are vlholly or partly of wood of smaller dimensions than re- quired for heavy timber construction" or of steel or iron not protected as re- quired for semi.f'ireproof construction.