Document 5bD5Zpvpbpv6egbbv973vJMQJ

These USG products and systems have been tested and approv I New York City Board of Standards and Appeals as meeting ceeding requirements of the Administrative Building Code: WALL AND CEILING CONSTRUCTIONS PYROBAR* Gypsum Tile for partitions. Calendar No. 638-41-SM. 2* Solid, no plaster--1 hour . 4* Hollow, plaster 2 sides--4 hours 3' Hollow, plaster 1 side -- 1 Vi hours 4" Hollow, plaster 1 side--3^ hours 3* Hollow, plaster 2 sides--3 hours 6* Hollow, plaster I side--3 hours 3* Solid, no plaster--3 hours TRUSSTEEl* Studs 216*, 314*, 4*, ond 6*, Calendar No. 556-50-SM.--rated incombustible. Hollow incombustible partition faced with Metal Lath (40.5 db), or Perforated Gypsum Lath ond BRACETITE Clips (46.5 db}, or Metal Lath on No. 400 clips (54.7 db). BRACETITE* System, Calendar No. 390-49-SM--rated incombustible. ' To secure Vs* Gypsum Lath to %* Chonnel Studs or Furring, or to TRUSSTEEL Studs, or to %* Ceiling Channels as base for plastering or for Acoustical Tile. 2* Solid Long Length ROCKLATH* and Plaster Partition, Calendar No. 476-44-SM, rated 1 hour. Hollow Long Length ROCKLATH Piaster Base and Plaster Partition--on %* Channel Studs with 1 16* to 16* airspace. Calendar No. 320-49-SM, rated 1 hour. Vs* SHEETROCK* FIRECODE 60 Wallboard, Calendar No. 171-52-SM, rated 1 hour, applied to each side of wood studs or as single layer on wood joists. FIREPROOFING STEEL COLUMNS PYROBAR* Gypsum Tile, See Seel. C26 --575.0 4 hour rating, using Metal Lath with 13A* gypsum-perlite plaster. Calendar No. 827-51-SM. 4 hour rating, using two layers 16* Gypsum Lath and hexagonal wire fabric with 116* gypsum-perlite plaster, Calendar No. 648-50-SM. PLASTER RED TOP* COVER COAT --Finishing and Bonding Plaster Apply over new concrete slabs In 2 coots to total of 16* thickness, Calendar No. 800-39-SM. 5ABINITE* (Float or Trowel Finish) and RED TOP (Stipple or Perforated Finish) AToustical Plaster, Calendar No. 600-39-SM, Vol. Ill, for application over asphalt emulsion on new concrete slabs, or over bosecoat plaster. STRUCTO-LITE* Plaster, Calendar No. 1 16-52-SM. Mill mixed Gypsum basecoat plaster wth perlite aggregate. LIME IVORY* Hydrated Ohio Finishing Lime (over 92% hydrated) Meets ASTM Spec. C206-49, Type 5., Calendar No 483-39-SM. MORTASEAL* Hydrated Masons' Lime (over 92% Hydrated) 30 minute plasticity is in excess of 200, required by ASTM C207-49, Calendar No. 710-44-SM. ACOUSTICAL SYSTEM Mechanical suspension of ACOUSTONE* mineral tile in E-Z-S Accessible Zee Spline System, Calendar No. 696-52-SM. WHERE TO GET TECHNICAL INFORMATION For complete information and specifications on these or any other USG building products or systems (including Gypsum ond Steel Roof Decks), consult the Architects' Service Department, 488 Madison Avenue, New York City, Plaza 9-6580. *T.M. Reg. U. S. Pat. Off United States Gypsum the greatest name in building BB006 0974 Fulton, Morrissey Company (6^) Advertising . . . CHICAGO