Illinois Society of Architects · Chicago · leaf 265
ls aroundsuch ttoor openings, shall be built of incom-bustible material. The supports of suchdoors, frames, sashes, casings and windowsshall also be of incombustible material. Inthe case of doors, such supports shall be ofrolled structural metal extending from floorto ceiling and secured to both.… … rig-. 45. Fig-. 46. PROTECTION OF BEAMS.Section 845, 846.(A) Fire-proof covering for heains, girders, etc., Fig 46. (A) 4 for exterior structural parts, Sec. 845. See pro-visions for columns (Sec. 838) for A. Fig. 45. (K) Allowable covering for shelf an-gles, etc.. not figured part of flange…
Architecture · Building · Architects
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