Document npjwvdQDnJR74Da5KrxeQ9La8

WRG 001315 a mss clear than this notice, it is due to the quality of the document being filmed___________ i :: o i: m l i; i I ( < ! ` T t '( ; 0 i t:; i i- . I - ................. REPORT' Or -...................... DELRMINATION TiND CRACKING TESTS OF SPRAYED-ON FIRE PROTECTION TYPE MK UNDER DEFLECTION i i .!) Made For ZONOLITE DIVISION W. R. GRACE & COMPANY By Froehling & Robertson, Inc., Greenville, S. C. September, 1965 Madison H. Woodward, RE 490, S. C Branch Manager ! i' * * # <(*- O o* 1 '.[r; v-I'-.vk Kent, fcuth it.rolir::.. Tkv. ccr.po.-iti on h:;:; b:.c:s applied l;y yield Yypc Equipment a:.u Methods to a 2:0' x 17. .0' Ejection of 11. II. Robertson Steel Deck, 10/16 ga. RK, at a thickness of 0.75 inch. After normal curing the section was uniformly loaded ns hereinafter described until deflection greater than one-one-hundcod twentieth (1/120) of the span or 1.2 inches, was obtained, without occurrence of cracking, flaking, or deluminntion. Applicable Specifications The test was performed in accordance with the Government Services administration, Washington, D. C., Specifications 65-17206, Pago 29-2, Title "Deflection." The specification reads as follows: "Deflection: Material shall not crack or delaminate when the backing to which applied is subjected to downward deflection of 1/120 of the span." Preparation of Teat Specimen A single panel of II. II. Robertson section RK Steel Deck III gn/16 ga., 2.0 feet wide by 14.0 feet long was suspended 2.5 foot uhove the floor on firm supports with a clear span of 12.0 foot, Two bags of dry MK wero mixed with water at the rate of 11.0 gallons per bag. Mixing was done in a conventional 6-1. Mortar Mixer for /i period of throe to five minute:; after v.hJ'.'h tin; mix: cl infit'erinl wm\ p.liicv i;. flu. hopper of a >'t- I j II w* o r.ro t! : or.;:. v'. . f _.:r v.r.v: .. - f-'-'f r-" ".in'.'.tv:: . i t-t'JVilK: v:vs o. polic;.;.. bj.\ t ..." tciy 3/ ' each, both cov.r:. allowing the cc.'.^vur o_ the steel. There was a lapse of time between courses of about 2.5 hours. Slight smoothing by trowel was necessary af 21- spraying. Specimens were also made for tests for density out of the same batch of material as the spray coats. The application of MK was made on July 9, 1965 inside a steel building at daytime room temperature of 88 F. The panel was left in place to cure until September 9, 1965. The dry weight of the cured Monokote (MK) was determined and found to be 24.0 pounds per cubic foot. Deflection Test of Specimen Uniform loads were applied to the panel by means of pre weighed iron pigs weighing 20 pounds each. Loads were applied in increments as shown below. Deflection was measured at the center of the panel with a Micro-Dial reading to 0.001 inches. The dial was secured to a reference bar supported independently of the rest of the assembly. Each load increment was allowed to remain in place until there was no further movement of the dial. The deflections were then recorded and the next increment applied. Loading was continued u: til deflection greater than 1.2 inches was obtained 1 After the deflection reached 0.5 inch the panel was examined with a magnifying glass for cracks ar.d. i *ktitate o - c c l\r c - cruck L:: ; ..'c,.'' . dry j.;v; lev. In;: rv full doflection had '......... The loud deflection results as tabulated below were n.lr.o -plotted on-a chart which in included in this report. Total Load lbs. 0 200 520 960 1440 1880 2400 2880 3240 3472 Uniform Load PSF 0 11.7 21.7 40.0 60.0 70.4 100.0 120.1 135.1 144.8 Deflection Inches 0 .013 .105 .279 .460 .638 .833 1.000 1.138 1.239 Remarks Immediate Deflection Deflection complete in 5-min. Deflection complete in 5-min. Deflection complete in 5-min. Deflection complete in 5-min'. Deflection complete in 7-min. Deflection complete in 7-min. Deflection complete in 10-min Deflection complete in 10-min Recovery was not measured by dial gage but by sight appeared to be complete recovery. There were no visible cracks on the underside nor delaminations when examined with magnify ing glass during and after loading. In conclusion/ test results show that the specimen meets requirements of the GSA Specification 65-172o6 for Type I materials/ unit weight/ and deflection. There was no visible cracking or delamination nor any change in appearance of the specimen after testing. Respectfully submitted, FROEHUNG & ROBURTSOfJ, INC. Mn d i. s o a H. W o o a v/a r d, !' ur.ng: r r f '38l F |R 0 E H L I N G & R 0 B E RT S 0 N, I N C. l***MCtlON iNOINEm CHCMISTS t A CTU 10 10 C I S T i c*ii looim- Report No. 2 GN 6712-9 N QMtCI AMO lAtOBATOlill * > I** * t I * N C M uioiMoiin REPORT OF DELAMINATION AND CRACKING TESTS OF SPRAYED-ON FIRE PROTECTION TYPE MK UNDER DEFLECTION Made For ZONOLITE DIVISION W. R. GRACE & COMPANY _ . / ay Froehling & Robertson, Inc . * Greenville, S. C September, 1965 Ml*in ,4,1 * 1 >*. - . * * t , Madison H. Woodward, RE 490, 6. C. Branch Manager c .......... * . t*> *. 4 * Abstract The test was performed on Type MX Fireproofing Composition Manufactured by zonolite Division of w. R. Grace & Company, at Travelers Rest, South Carolina. The composition had been . applied by Field Type Equipment and Methods to a 2i0' x 12.0' section of H. H. Robertson Steel Deck, 18/16 ga. RX, at a thickness of 0.75 inch. After normal curing the section was : uniformly loaded as hereinafter described until deflection . greater than one-one-hundred twentieth (1/120) of the span or 1 1.2 inches, was obtained, without occurrence of cracking*, . flaking, or delamination. Applicable Specifications >-. . * * The test was performed in accordance with the Government Services Administration, Washington, p. C., Specifications* 65-17206, Page 29-2, Title "Deflection." The specification-., f' V reads as follows: "Deflection: Material shall not crack oiT delaminate when the backing to which applied is subjected to .. v " downward deflection of 1/120 of the span." Preparation of Test Specimen A single panel of H. H. Robertson section RX Steel Deck \* 18 ga/16 ga., 2.0 feet wide by 14:0 feet long was suspended 2.5 feet above the floor on firm supports with a clear span of 12.0 feet. T>o bags of dry MX were mixed with water at the rato of 11.0 gallons per bag. Mixing was done in a conventional I quality of the document being filmed 6-S Mortar Mixer for a period of three to five minutes after which the mixed material was placed in the hopper of a STEDX- FLO TRICQATER piston type plaster pump, and was then sprayed onto the underside of the test panel at the rate of 1.0 cubic foot per minute. Spraying was done in two applications of approximately 3/8" each/ both courses' following the contour of the steel. There was a lapse of time between courses of about 2.5 hours. Slight smoothing by trowel was necessary after * spraying. Specimens were also made for tests for density out of the same batch of material as the spray coats. The application of MK was made on July 9, 1965 inside a . steel building at daytime room temperature of 68 F. The panel was left in place to cure until September 9, 1965. The dry weight of the cured Monokote (MK) was determined and found to be 24.0 pounds per cubic foot. Deflection Test of Specimen ' *' S* * Uniform loads were applied to the panel by means of pre-, weighed iron pigs weighing 20 poundB each. Loads were applied in increments as shown below. Deflection was measured at the center of the panel with a Micro-Dial reading to-0.001 inches'.' The dial was secured to a reference bar supported independently of the rest of the assembly. Each load increment was allowed .to remain in place until there was no further movement of the dial. The deflections were then recorded and the next increment l quality of the document being filmed applied. Loading was continued until deflection greater than 1.2 inches was obtained. After the deflection reached 0.5 inch the panel was examined with a magnifying glass for cracks and delamination after each increment until the test waa complete. The load waa then removed and observation for recovery made. No trace either of delamination or cracking could be ' found during loading or after full deflection had been reached. - j." The load deflection results as tabulated below were also V , plotted on a chart which ia included in this report. ' ' . i, Total Load Uniform Load lbs. PSF 0 2 BO 520 960 1440 1880 2400 2880 3240 3472 0 11.7 21.740.0 60.0 78.4 100.0 120.1 135.1 144.8 Deflection Inches 0 .013 .103 .279 .468 .638 .833 1.000 1.138 1.239 Remarks . Immediate Deflection ** *.: * Deflection complete in 5-mi Deflection complete in 5-mi! Doflection complete in 5-mi Deflection complete in 5-mi Deflection complete in 7-ml Deflection complete in 7-mi: Deflootion complete in 10-m; Deflection complete-in 10-m| S C c c c - -( hacovery was not ireasurad by dial gags but by night '' y fV .`; ' '! *. ' ' appeared to be complete recovery. Thera v/ore no violble cracke r. -J-\V ' . on tho underside nor delsmlnnticno when examined with magnify- : ing glass during, and after loading. . `W-0 In conclusion, test results show that tho ooecimon'meets `' i'f.-r. requirements of tha GCA Opacification 65-17206 for Type X' . materials, unit weight, and doflectlon. There was no visible cracking or delamination nor any change in appearance of the specimen after testing. . . > ,j.i . ~ . . 'i Reopectfully subnmititteedd,. -s*' r: : PROSHLIKO & ROBERTSOH, it ; .' ? .4, :`*f '* .v ..f V.v ! ( Hadis on R. Woodward, 'UMeaaniMaJgMeier 1 , ' ' ': .* :.. ',.`1Y.*. . *. ', :.* ...1 -' f:t f/`;> 'v.*'vv-~. . - ; . ; .. ''''Hi'''.-'.'- v* v *. , .yVv- r *. \j n * . , . j / . .< ..... y: . f-.V^S.y - ........................... V'-,:.' - . . " ; .,1. * . ,. .* .> *'1.. vs . .r .'1 r' ? ^ I A.- V* . J.t f NOTICE: I f the film image it leea clear than this notice, it ia due to the quality o f the document being filmed