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1~ in. gypsum-vermiculite plaster on two layers ~ in. perforated gypsum lath boxed around column and fastened with wire ties. Plaster mix: 2~ cu. ft. U.L. listed vermiculite plaster aggregate to 100 Ibs. fibered gypsum. Other details as specified in U.L. list- ingc, under Column Protection-Design No. 5-3 HR. 1~ in. (measured from face of lath) U.L. listed ce- ment 'and plaster mixture on ~ in. ribbed metal lath vv"rapped :.round column. ~rc fi!!. Other det:li!~ :!os specified in U.L. listingc, under Column Protection- Design No. 2-3 HR Letter 14 43 to notes, page 47. superscripts refer to notes, page 47. 3 hrs. . e · Nonbearing. ~ in. gypsum-vermiculite plaster on metal lath. Plaster mix: scratch coat 2 to 2~ cu. ft. and brown coat 3 to 3~ cu. ft. U.L. listed vermiculite plaster aggregate to 100 Ibs. fibered gypsum. Other details as sDecified in U.L. listinJlC. under Walls and Partitions-Design No. 3-1 HR. Letter superscripts refer 1 hr. 3 hrs. 1 in. (measured from face of lath) gypsum-vermicu- lite plaster on metal lath spaced 1 ~ in. from column with plaster pushed through to column flanges. PIas- ter mix: scratch coat 2 to 2~ cu. ft. and brown coat 3 to 3~ cu. ft. U.L. listed vermiculite plaster aggre- gate to 100 lb. fibered gypsum. No fill. Other details as specified in U.L. listingc, under Column Protec- tion-Design No. 1-3 HR 3 hrs. l.J: I.. ~ in. 1 :2, 1:3 gypsum and sand plaster on wood lath; stud spaces filled with mineral wool. (7, 9).... ~ in. 1 :2, 1:2 gypsum and sand plaster on ~ in. flame-proofed fiberboard plaster base. (7, 9) .,....'". ~ in. 1:2 gypsum and sand plaster on ~ in. per- forated gypsum lath, one ~ in. diam. hole or larger for each 16 SQ. in. of lath. (7, 9).".,...,....,...... ~ in. unsanded, wood-fibered gypsum plaster on ~ in. plain gypsum lath. (9) "........................,...."..... ~ in. plaster, on metal lath attached to studs. Plaster mix for scratch and brown coats, 1:2 fibered gypsum plaster and pumice aggregate containing air entraining agent. (76) 1 hr. 1 1 hr. hr. 1 hr. 1 in. (measured from face of lath) gypsum-perlite plaster on metal lath spaced 1~ in. from column with plaster pushed through to column flanges. Plaster mix: 3 cu. ft. U.L. listed perlite plaster aggregate to 100 Ibs. fibered gypsum. No fill. Other details as specified in U.L. listingc, under Column Protection-Design No. 4-3 HR 3 hrs. ~ in. 1 :1~, 1:3 gypsum and sand plaster on ~ in. diamond mesh expanded metal lath of 26 U. S. gauge attached by 1~ in. 4-penny nails 6 in. apart or by equivalent staples. Studs 2 x 2 in. if non- bearing. (10) 1 hr. hr. in. (measured from face of lath) gypsum-perlite plaster on metal lath spaced 1~ in. from column, with plaster pushed through to column flanges. Plaster mix: scratch coat 2 cu. ft. and brown coat 3 cu. ft. U.L. listed perlite plaster aggregate to 100 lb. fibered gypsum. No fill. Other details as speci- fied in U.L. listingc, under Column Protection- Design No. 3-3 HR 3 hrs. ~ in. gypsum-vermiculite plaster on ~ in. per- forated gypsum lath. Plaster mix, 2~ cu. ft. vermiculite to 100 lbs. fibered gypsum. (50).,........ 1 hr. or 1~ hrs.. . .' ~ in. gypsum-perlite plaster on ~ in. perforated gypsum lath; plaster mix: 2~ cu. ft. perlite to 100 Ibs. fibered gypsum. (49) 1 hr. or 1~ hrs.. 2 in. hollow clay tile with outside wire tiesq or with ~ in. metal mesh in horizontal joints; limestone or trap rock concrete fill, extending 1 in. outside column on all sides. (26) 3 hrs. Wood Stud Partitions, Plastered Studs2x4 in. or larger. Finished each side as noted ~ in. unsanded, wood-fibered gypsum metal lath. (7, 9) "......,'....,...,................ ~ in. 1 :2, 1:3 gypsum and sand plaster on metal lath: stud spaces filled with mineral wool. (9) 1 :2, 1:2 gypsum and sand plaster on meta stud spaces filled with mineral wool. (7, 9) on plaster 1~ hrs. 1~ MS. in. gypsum and sand plaster on ~ in. perforated gyp- sum lath boxed around column and fastened with wire ties. Plaster mix: scratch coat 200 lbs. and brown coat 300 Ibs. sand to 100 Ibs. fibered gypsum. (90) ...... 3 hrs, ~ in. lath in. unsanded, wood fibered gypsum plaster on metal lath. (9) 1~ hrs. bb2 hrs.. 2 1~ in. (measured from face of lath) gypsum-perlite plaster on self-furring metal lath. Plaster mix: scratch coat 2 cu. ft. and brown coat 3 cu. ft. of perlite to 100 Ibs. fibered gypsum. Other details as specified in U.L. listingc, under Column Protection- Design No. 6-3 HR 3 :lrs. 5/32 in. cement-asbestos shingles laid over 14 lb. per 100 SQ. ft. asbestos felt over ~ in, wood sheathing on one side; 4 in. strips of ~ in. gypsum board over edges of studs under facing of 3/16 in. cement asbestos board on other side; filling of mineral wool bats. (9) 1 hr. 1~ in. gypsum-perlite plaster on ~ in. perforated gypsum lath boxed around column and fastened with wire ties. Plaster mix: scratch coat 2 cu. ft. and brown coat 3 cu. ft. perlite to 100 Ibs. fibered gypsum. (92) 3 hrs. Wood Stud Exterior Walls Studs2x4 in.orlarger. One side sheathed with ~ in. gypsum sheathing covered with wood drop siding; other side faced with ~ in. 1:2 gypsum and sand plaster on ~ in. perforated gypsum lath. (39) I hr. Type Steel Columns Details COL UMN PROTECTIONS-Continued Fire Resistance Based on Standard Fire Tests Ratings of Protection Rating . . Type Fire WALLS Resistance Details AND PARTITIONS-Continued Based on Standard Fire of Ratings Construction Tests Rating e FIRE RESISTANCE RATINGS e e FIRE RESISTANCEt.TINGS