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§12-01 Application and Protection of Sprayed-On Fireproofing
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(a) Definitions.Sprayed-on fireproofing materials.
(1) Type I — Cementitious material with aggregate.
(2) Type II — Intumescent Mastic with fillers drying to a hard finish.
(3) Type III — Mineral fibers with inorganic binders.
(b) All sprayed-on-fireproofing of any type heretofore or hereafter approved by the Board shall, in addition to being installed in accordance with its specific approval, be further governed by the following requirements:
(c) Surfaces to receive sprayed-on-fireproofing shall be cleaned of dirt, grease, oil, loose paint, and any extraneous materials immediately prior to the application of fireproofing.
(d) When used to fireproof columns, all types shall be permanently jacketed or otherwise protected from abrasion or displacement for the full height of the exposed column, but such protection need not extend more than 9'-0" above floor level.
(e) When used to fireproof beams and/or floor or roof construction, and when the lower flange of the beam or the bottom plane of the floor construction is less than 9'-0" clear to the floor below, Types I and III shall be permanently protected either by a suspended ceiling, or by other means such as mesh screening so as to prevent damage to or displacement of the fireproofing.
(f) The material used for the protection of sprayed-on-fireproofing shall be adequate for its purpose as approved by the Department of Buildings.
(g) Type III finished fireproofing shall be tamped to a uniform thickness which shall be not less than that approved for the required fire resistive rating.
(h) Types I and II finished fireproofing shall be of a uniform thickness which shall be not less than that approved for the required fire resistive rating.
(i) The general contractor and the owner shall provide qualified personnel to supervise the application of the sprayed-on-fireproofing. They shall certify to the Department of Buildings that the finished fireproofing of the completed building is in full compliance with the requirements of the approval granted, these rules and the drawings approved by the Department of Buildings.
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