Theatre Catalog (1947-48)

expanded mine and plant production and TABLE 1—Summary of fire tests on walls, columns and beams, and floors and overcome many adverse conditions which ceilings incorporating vermiculite. (From the Vermiculite Research Institute’s “The have caused vermiculite materials to be Contribution of Vermiculite to Fire Protective Construction.’ in short supply. Output of the principal mine in this country, located at Libby, 1 ACRE — ~ 5 Reger os Montana, and operated by the Universal d | | -wexeemeessitle [SHS peices aunen eeaea AUTHORITY Zonolite Insulation Company, has been O3 more than doubled. In South Carolina, a large area has been given over to mining vermiculite for distribution principally to the southeast. New expanding plants have been established in Albany, New York; Dearborn, Michigan; Chicago, Illinois, and Minot, North Dakota. In all, there are over twenty-five owned and licensed Zonolite brand vermiculite processing plants in this coun Steel Plate Floor Assembly 2"vermiculite concrete topping. Suspended ceiling l"vermiculite plaster on metal lath. Underwriters’ Ind. Ret. $2773-9/12/ Suspended ceiling of 1 inch vermiculite plaster on metal lath as protection for steel construction. Inconbustible construction above ceiling. Underwriters! Inb. 4 hre Bet. #$2773-1/29/47 Steel Plate Floors 2h" sand concrete topping. try. 3 Ceiling of 2" vermiculite 3 nrs ih We area ot Btendarda Of principal interest to theatre owners a Plaster on metal leth. S92 is vermiculite’s extreme light weight. a hs ntosee neo O Ee zane Weighing only 6 to 8 pounds to the cubic vermiculite plaster. foot, depending on the grade, vermiculite zg Winiaun ori2=roiude=t sone in its various finished product forms is s phy Papert eacl ferret | |) 020 Underwriters! Lab. capable of reducing many tons of dead 8 plaster on metal lath. Rot. $2669-12/18/39 I oe load in theatre structures. Weight Minimum of 2" sand concrete Cellular Steel Floors i i i i fill. Suspended ceiling 1" | 4 hr saving invariably results in lower costs, vermiculite plaster on metal = U. S. Burena of Standards because of reduced handling and the lath. Dist. x = 2" or more ge . . . . oa e elimination of costly construction techSanelauiabavelexcent niques. This fact alone would invite distance x, 9" or more. 5 hrs . consideration of vermiculite where new buildings or remodelling is contemplated. o* “sandl conese te /c10 2" vermiculite plaster on 26 hr. U.S.Buresu of Standards INSULATING PLASTER Perhaps the most quickly evident saving in installation time because of the light-weight characteristics of vermiculite is where the material is used in the making of a fire-proof, insulating plaster. Plaster aggregate made from vermiculite replaces sand, and is mixed with gypsum and troweled on in the same fashion as sand plaster. In many communities, vermiculite has completely replaced sand and is adopted as standard. Vermiculite plaster offers a definite superiority over sand in its sounddeadening and fireproofing qualities. Weight-saving is especially notable where vermiculite plaster is used to provide fire-proofing of beams, columns, floors, and ceilings. Table 1 shows the resume of fire tests which have been conducted utilizing vermiculite for this purpose. INSULATING CONCRETE metal lath. 2h" “sand concrete fill §" vermiculite plaster on metal lath. ENS92 — Table 43 True average thickness of the concrete fill ¢ inch 3 hre. Greater than shown due to sag in forns. Steol Joist Floors 2h" “sand concrete fill 1" verawiculite plaster on 4 hrs. metal leth. Steel "I" Beam supporting floor. Underwriters! Lab, 2"vermicuilite cencrete fill. 4 hee. Ret .$2773-9/12/4ue Suspended protection of 1" vermiculite plaster on metal latt.. Stool "I" Beam Protection Suspended protection of 1" vermiculite plaster on metal lath. Incombuctible construction above ceiling. Undorvriters' Lab. 4 hre Ret. $2773-1/20/47 Column protected with 1" vermiculite plaster on metal lath. Lath spaced 1} inch from column. Space behind lath on flange faces filled with plaster as shown. Undorvritors! Lab. Rot. $2851-1/7/47 | COLIMMNS AND BEAUS Load bearing wood stud partition. «etal lath with lhr. lad. An equally important adaptation of 3 S(AbinchiverstcuLtte plaster wet oa77 a3 vermiculite is in its use for the manuTABLE 2—Properties of various mixes (by volume) of ZonoF required for one cubic yard of placed Zonolite water-repellent lite insulating concrete, including strength in pounds to the concrete. (From “Zonolite Concrete,” published by the Unisquare inch and thermal conductivity, and the materials versal Zonolite Insulation Company.) Strength in pounds Mix by volume 9 per square inch Materials required for one cu. yd. of placed Zonolite water repellent concrete Thermal Conductivity ("KC") in B.t.u. Cu. ft. Indentation inch Cu. ft. ' ; per inch thick Bags Zonolite SOMPIERETS strength 1” ness, per sq. ft. Bags Zonolite Gall portland Stabilized é" x oo" dise on per hour, per portland Stabilized allons cement concrete pa aoe 3” x12” x 12” degree F. cement concrete water aggregate znce slab aggregate 1 1.07 9 1 * 0.79 6.75 ) 5 0.69 54 1 $ 0.65 4.5 1 7 0.62 3.9 1 ts 0.60 3.4 1 9 0.59 3.0 1 10 0.57 2.7 1 1 0.56 2.5 ] 12 0.55 2.3 1 14 0.48 1.9 1 16 0.46 1.7 *This mix ordinarily used for structural roof decks. {This mix ordinarily used for insulating roof fill, 1947-48 THEATRE CATALOG