COLUMN ASSEMBLIES UL 1709 RAPID TEMPERATURE RISE RATINGS PYROCRETE® 241 The temperature of the fire in which rapid temperature rise ratings are derived, reaches 2000oF within five minutes of exposure. The fire temperature is maintained at this level throughout the rating period. This fire exposure was developed to provide a means to evaluate fire resistive assemblies intended for use in areas which may develop fire temperatures at a faster rate than assemblies tested under Standard UL 263. Systems classified in this category are also investigated to determine their ability to retain a degree of fire resistance when exposed to various environments. Materials are subjected to standardized environmental tests which include simulated aging, ultraviolet light, salt spray exposure, the cycling effects of water freezing temperatures / dryness and exposure to air containing carbon dioxide and sulfur dioxide. U.L. DESIGN XR-702 U.L. DESIGN XR-701 Tie Wire PYROCRETE® 241 PYROCRETE 241 Column (W10 x 49) Column (W10 x 49) 3.4 lbs. Galvanized Metal Lath 3.4 lbs. Galvanized Metal Lath Rating 3/4 1 1-1/2 2 3 4 Rating Thickness 1/2 in. (13mm) 11/16 in. (17mm) 15/16 in. (24mm) 1-1/8 in. (29mm) 1-3/8 in. (35mm) 1-9/16 in. (40mm) Thickness 5/8 11/16 in. 7/8 in. 1 in. 1-1/8 in. 1-1/4 in. 1-1/2 in. 3/4 1 1-1/2 2 2-1/2 3 4 (16mm) (17mm) (22mm) (25mm) (29mm) (32mm) (38mm) BULKHEAD RATINGS PYROCRETE 241 Steel Spring Washer RATING A-30 A-60 H-30 H-60 H-120 16mm 25mm 15mm 23mm 33mm FIRTO (5/8 in.) (1 in.) (9/16 in.) (15/16 in.) (1-1/4 in.) LPG TANKS fire protected coatings Steel Pin Steel Bulkhead 3/4 Galvanized Metal Lath DET NORSKE VERITAS 14mm (9/16 in.) 20mm (13/16 in.) 15mm (9/16 in.) 21mm (13/16 in.) 33mm (1-1/4 in.) LLOYD'S REGISTER 16mm (5/18 in.) 25mm (1 in.) 15mm (9/16 in.) 23mm (15/16 in.) 33mm (1-1/4 in.) VESSEL WALL F.M. APPROVED 3.4 lbs Galvanized Metal Lath Overall PYROCRETE 241 Thickness--3/8 in. (10mm) Wet NOTE: Consult Carboline Company for topcoat recommendation. June 98 Replaces Jan 98 Section AA Page 10 of 10
