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<br />Ie
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<br />FIRE RESISTANCE RATINGS
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<br />e
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<br />COLUMN PROTECTIONS-Continued
<br />Resistance Ratings Based on Standard Fire Tests
<br />
<br />Fire
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<br />~.
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<br />It
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<br /> FIRE RESISTANCE RATINGS
<br /> WALLS AND PARTITIONS-Continued
<br /> Fire Resistance Ratings Based on Standard Fire Tests
<br />= =
<br />Type Details of Protection :Rating
<br />
<br />2 in. (minimum thickness) U.L. listed sprayed fiber
<br />applied directly to steel. Other details as speci-
<br />fied in U.L. listing<:, under Column Protection-De-
<br />sign No. 7-3 HR. ...,............,......................................,..,.......
<br />1~ in. (measured from face of lath) gypsum vermicu-
<br />lite plaster on self-furring metal lath. Plaster mix:
<br />scratch coat 2 cu. ft. and brown coat 3 cu. ft. D.L.
<br />listed vermiculite plaster aggregate to 100 Ibs. fibered
<br />gypsum. No fill. Other details as specified in U.L.
<br />Listing", under Column Protection - Design No.
<br />
<br />8-3 HR. ,...........,.....,......,.......,.,.......,...,........,.........................,.
<br />1~ in. gypsum-perlite plaster, on ~ in. perforated
<br />gypsum lath boxed around column and fastened with
<br />wire ties. Plaster mix: scratch coat 2 cu. ft. and
<br />brown coat 3 cu. ft. perlite to '100 Ibs. gypsum. (92)
<br />Two ~ in. layers of 1:3 gypsum and sand plaster or
<br />two 1 in. layers of 1 :2Yz portland cement and sand
<br />plaster, on metal lath, with ~ in. air space between
<br />the two layers; no fill. (9) ....,......."".........,.".............,.
<br />Four layers Yz in. gypsum wallboard. Inner three layers
<br />cemented and clinch nailed together, cemented to col-
<br />umn flanges and tied to column with double strands 18
<br />gauge tie wire at 15 in. spacing. Outer layer cemented
<br />to inner layer; corners cemented and taped. (69) ,...,...
<br />1 in. gypsum-perlite plaster on ~ in. perforated gypsum
<br />lath boxed around column and fastened with wire ties.
<br />Plaster mix: 100 Ibs. gypsum to 2Yz cu. ft. perlite.
<br />
<br />(92) ...................".................".,..,..,..............,.....,.................,...
<br />2 in. gypsum block, solid; unplastered ; 1i in. 12
<br />gauge metal cramps set in holes drilled in blocks to
<br />link adjacent blocks of same course together; no
<br />
<br />fill. (28) .""............""....."......,.....,....,....................."..,......
<br />2 ht. gypsum block, solid; corrugated metal ties or
<br />~ in. metal mesh in horizontal joints; gypsum block
<br />or poured gypsum fil1; ~ in. gypsum mortar between
<br />column and block. (26) ,...................................."....."...,....
<br />
<br />3 in. gypsum block, hollow; unplastered ; 1i in. 12
<br />gauge metal cramps linking adjacent blocks of same
<br />course; no fill. (28) ,.....,.."...".....,...,."..............,......"........,.
<br />
<br />1 in. (measured from face of lath) gypsum-perlite
<br />plaster on self-furring metal lath to fur lath ~ in.
<br />from steel. Plaster mix: scratch coat 2 cu. ft. and
<br />brown coat 3 cu. ft. perlite to 100 Ibs. fibered gypsum.
<br />Other details as specified in U.L. listingc, under
<br />Column Protection-Design No. 2-2 HR. ,........,..........
<br />
<br />1 in. (measured from face' of lath) gypsum-perlite
<br />plaster on metal lath spaced 1 ~ in. from column.
<br />Plaster mix: scratch coat 2 cu. ft. and brown coat 3
<br />cu. ft. U.L. listed perlite plaster aggregate to 100
<br />Ibs. fibered gypsum. No fil1. Other details as speci-
<br />fied in U.L. listingC, under Column Protection-Design
<br />No. 1-2 HR
<br />
<br />Rating
<br />
<br />Protection
<br />
<br />of
<br />
<br />Details
<br />
<br />Type
<br />
<br />Steel
<br />Columns
<br />
<br />3 hrs.
<br />
<br />3 hrs.
<br />
<br />2~ hrs,
<br />
<br />2~ hrs.
<br />
<br />2~ hrs.
<br />
<br />1 hr.
<br />1 hr..
<br />1 hr..
<br />1 hr..
<br />1 hr.. . 'I
<br />
<br />.~
<br />
<br />% in. gypsum wal1boardcc attached to 3% in. steel studs,
<br />with 2 in. cement coated nails spaced about 7 in. on
<br />centers. Joints covered with fiber tape and cement.
<br />(87)
<br />
<br />% in. U.L. listed gypsum wallboardcc attached to
<br />3% in. steel studs with 2Yz in. nails spaced 8 in. on
<br />centers. Joints and nail heads covered wtih fiber tape
<br />and cement. Other details as specified in U.L. listing",
<br />under Walls and Partitions-Design No. 2-1 HR. ...'..
<br />
<br />Steel Stud
<br />Hollow
<br />Partitions
<br />Without
<br />Plaster
<br />Finished
<br />each side
<br />as noted
<br />
<br />Yz in. cement-asbestos board on 3 in. steel studs; in-
<br />terior space filled with mineral wool under air pres-
<br />sure. (21)
<br />
<br />% in. U.L. listed gypsum wallboardcc attached to 3%
<br />in. U.L. listed steel studs with 1Yz in. annular nails
<br />spaced 6 in. on centers and used with ~ in. nailing
<br />discs at wallboard joints. Studs attached to floor'
<br />and ceiling track with plated No. 6, ~ in. sheet metal
<br />screws. Nailheads in wallboard covered with joint
<br />cement and joints covered with fiber tape and cement.
<br />Other details as specified in D.L. listingc, under Wal1s
<br />and Partitions-Design No. 11-1 HR
<br />
<br />31i in. wall composed of 7/16 in. thick pigmented
<br />asbestos board weighing 2.2 to 2.4 Ibs. per sq. ft., on
<br />open web 20 gauge steel box studs. Space between
<br />studs packed solid with mineral wool batts. (85) ..........
<br />
<br />2 hrs.
<br />
<br />2 hrs.
<br />
<br />2 hrs.
<br />
<br />2 hrs.
<br />
<br />o
<br />
<br />6 in. wall consisting of 4 in. perlite-portland cement
<br />plaster on paper-backed wire fabric and encasing steel
<br />framing members on one face; 1 in. gypsum-perlite
<br />plaster applied on paper and aluminum foil-backed
<br />wire fabric on other face, with furring channels form-
<br />ing 1 in. air space between the two sections. Plaster
<br />mix for 4 in. face, 4 cu. ft. U.L. listed perlite to 94
<br />lbs. portland cement, 3 lb. asbestos fiber, and 1 fluid
<br />ounce air entraining solution; for other face, scratch
<br />coat 3~ cu. ft. and brown coat 4 cu. ft. U.L. listed
<br />perlite to 100 lbs. gypsum. Other details as specified
<br />in U.L. listing<: under Walls and Partitions-Design
<br />No. 3-4 HR
<br />
<br />Steel Stud
<br />Wall
<br />(Steel
<br />framing
<br />encased in
<br />plaster)
<br />
<br />2 hrs.
<br />
<br />rl
<br />
<br />4 hrs..
<br />
<br />6 in. partition of 2 by 6 lumber; pieces nailed to-
<br />gether flatwise; in vertical position if load bear-
<br />ing. (36)
<br />
<br />Wood
<br />Partitions.
<br />Solid
<br />
<br />hr.
<br />
<br />1
<br />
<br />page 47.
<br />
<br />to notes,
<br />
<br />refer
<br />
<br />Letter superscripts
<br />
<br />· Nonbearing.
<br />
<br />hrs.
<br />
<br />2
<br />
<br />page 47.
<br />
<br />to notes,
<br />
<br />Letter superscripts refer
<br />
<br />15
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<br />
<br />42
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