423 75TH ST SE 2018-01-02 MF Import

International Conference of Building Officials �EUMIy 113MM1ME 11MMMUMATIOn . ONE -HOUR FIRE -RESISTIVE INSULATED 1vOOD STUD PARTITION CONSTRUCTIONS ROCFWOOL INDUSTRIES, INC. 13601 PRESTON ROAD DALLAS, TEXAS 75240 1. Wroduetioa: At the request of Premium Broad Insulation Cm up of the Smquahanna Coryontlot, Belton, Teru, the Re- sea2 Commlitea of the Intemational Conference of Budding 01:. .a. ha. n ad: n reas cnir„stic.: cf the dcta sub, lied in con. nection with the One -Hour Fire-hesistive Insulated Wood Stud Partition Constructions. U. Description, Ons-flow Fire•Rssistivo Nonbtaring Partition: The one -how noobearing partition consists of 2-inch by 4-Inch wood studs spaced 18 Inches on center with %.inch thick regular Qypsum wallboard applied either vertically or horitontally to each face of the partition. The wallboard b attached with 5•penny ce- ment coated (cooler) mils or 5-penny parkerhoad nalb having a length of 1% Inch". Nails are spaced at 7 Inchn on center on all studs and plates. All milheods an treated with three ousts of compound and all loinare given a coat of Joint compouhd my. ored with paper tape, followed by two additional costs of com- pound. Thu void sppace between the studs is Insulated with spun mlmral rock wool Insulation balls having a width of 15 inches, a length of 48 inches and a tisickness of 3 inches. The baits and the monsbram covenn+„ bays a minimum density of 1.85 pounds per cubic fool The buns ere Attached to the smids utiliring ii-inch Is¢ length, R-Inch crown staples spaced 10 Inches on cents installed through tabs located on the long edge of the butt. Cnr-Hour Firs-R"bore Load -Bearing Partition, Identical to the nonbeada construction described above, except that loads not exceeding 1250 pounds per stud for 2 by 4 studs and 2030 pounds per stud for 3 by 4 studs may be superimposed where the paid. tlon hei;ht don not exceed 8 feet. For heights In excess of 8 feet, the allowable load shall be based upon on allowable stress In com- pression perpoodicular to the gain on the sill of 175 pounds per square Inch or with a maximum stress not to exceed half of that Permitted by the column formuls: Report No. 2696 December, I974 5E Fe = (1/d)s In Section 2507 (e) of the Uniform Building Code, whichavor method ylekh the most restrictive design. For straw -graded lumber, the modulu of elasticty to be sued In the design skull be in ac• cordance with Table No. 25-A of the Uniform Building Coda. For ronstress-graded lumber, the modulo shall be that aulgaed In U.B.C. Standard No. 25.21. One -How Fire-Raicive Partitions with Staggered or Double Stud Comtructiom The construction and design 11f basing) am Hectic_I to tL_ '. des-t'.-A ubov; far Leading or unntwring systrtu. The staggered stud wall consists of studs staggered between common top and bottom plates, two layers of Iesubtion bath wo Installed, one for each 164nch wide cavlty; how,,", the t,atca way be each reduced to a thickness of 2 inches. The double stud wall coruBh of separate mH sof studs on either separate or on 8-inns top and bottom plates, with twn layers cc 3. Inch bath, one for each 16-inch cavity. car a- Fimneolstive Exterior Wan Constructions The eo- struction and dnlfins (If bearing) are Identical to one of the systesu described above for Interior partition construction (incbsding Insu, lotion) except the utedor fadag It a requited for one -how Rra- resistive exterior wood stud wall to Table No. 43-B of the Uo4- form Building Code. Ideoti8cotiont The Insulation baits are Identilled by a labeled PAW face berritiF the words Premium Band High -Density Building lnsulation' as well u product data, installation Instruc- tions and the of the manutacturem constituting the Premium Bind Crnap. III, Evident* Submitted, Fire tests am submittrd. Recommendation xi IV. Rommendadont That the One -Hour Fins Aeslstiva• Into - fated Wood Stud Partition Constmetlom described in Part II of this report and as shown on pogo 2 am satisfactoryaltamHo methods of cowtnatlons under the Uniform Building Cade for the Bra-nsbtive clatsigcations noted. This recommondatlon Is subject to annua ro.awnlnation. Ali �n l� 1vW Y k Page I at 2