Text on the drawing
3 3 1. Spray-Applied Fire Resistive Materials* — Applied by mixing with water and spraying in more than one coat to the thicknesses shown below, to steel surfaces which are clean and free of dirt, loose scale and oil. Min avg and min ind density of 15/14 pcf respectively. Min avg and min ind density of 19/18 pcf respectively for Types 7GP and 7HD. For method of density determination, see Design Information Section, Sprayed Material. Rating Hr Min Thkns In. TS 4x4x0.188 TS 4x4x0.375 4 — 2-9/16 3 3-9/16 1-7/8 2 2-5/16 1-1/4 1-1/2 1-11/16 7/8 1 1 9/16 ARABIAN VERMICULITE INDUSTRIES — Type MK-5. GRACE KOREA INC — Types MK-6/CBF, MK-6/ED, MK- 6/HY, MK-6s, Monokote Acoustic 1 . PYROK INC — Type LD. SOUTHWEST FIREPROOFING PRODUCTS CO — Types 4, 5, 5EF, 5GP, 5MD, 7GP, 7HD, 8EF, 8GP, 8MD, 9EF, 9GP, 9MD. W R GRACE & CO - CONN — Types MK-4, MK-5, MK- 6/HY, MK-6s, Monokote Acoustic 1 , RG. 2. Steel Column — Steel tubular column with min outside dimensions of 4 by 4 in., a min wall thickness of 3/16 in. or 3/8 in. and a min weight of 9.31 or 17.24 pcf respectively. *Bearing the UL Classification Mark Fire Resistance Ratings - ANSI/UL 263 Design No. X752 March 13, 2007 Ratings — 1, 1-1/2, 2, 3 and 4 Hr.
