Document karvwge3qExxr1Z3OrpxmBNNO

FILE NAME: WR Grace (WRG) DATE: October 28, 1970 DOC#: WRG128 DOCUMENT DESCRIPTION: 1970 Letter from Underwriters Laboratories regarding full-scale fire testing. R4339 UNDERW. RITERS' LABORATOK' E-s7lN-C. 7 -- a;i.1 l`K i v ; s i > i ii i m i ii.l.i'-'io i,iki..: r anindependent, not-for-profit urpav Action test upfor m!,lr sail hj October 28, 1970 Zonolite Construction Products Division W. R. Grace Company 62 Whittemore Avenue .Cambridge, Massachusetts 02140 Attention: Mr. T. Felt Gentlemen: . , v - '* V . The following will confirm the results of our full-scale UL263 (ASTM E119) fire testing, the to-date results of additional small-scale fire tests, and our engineering analysis to date; namely, that the cementitious mixture (formulated without asbestos) and identified as Mono.Kbte IV possesses thermal and heat resistance properties equal to those of Mono Kote III and is eligible to bear . 5 label of Underwriter;;' Laboratories with the following ,'xre Resistance Classifications; Floor end Ceiling Design los. 10-4 Hr, 19-4 Hr, 17-3 Hr, 28-3 Hr, 72-3 Hr 30-3 Hr, 227-3 Hr, 17-2 H r ' 49-2 Hr, 90-2 Hr, 227-2 Hr, 294-2 Hr, and 28-1-1/2 Hr. Roof and Ceiling Design Nos. RC7-2 Hr, RC10-2 Hr, ' RC5-1-1/2 Hr, and RC10-1 Hr. Beam Protection Design Nos. 40-4 Hr, 216-3 Hr, and 239-2 Hr. , Column Design Nos. 15-4 Hr, 27-4 Hr, 37-4 Hr, 46-4 Hr, 17-3 Hr, 23-3 Hr, 32-3 Hr, 37-3 Hr, 7-2 Hr, and' * 22-2 Hr . . Confirming the UL723 (ASTM E84) fire hazard results, the existing Fire Hazard Classification of 10 - flame spread, 5 - fuel contributed, and zero smoke developed remains unchanged for this new material. . RMB:Jb PLAINTIFF'S EXHIBIT Very truly yours, f V 'ROBERT H. EERHINIG Project Engineer v Fire Protection Department AU4TATC LEGAL SU m V C G L