Document O3LMgydmV6D7KO3RXprrvX9Vj

Juns 23, 1966 ' Dr. Morris Idaff 22 Gnrxtan Avesne Newark, Rev Jersey 07112 Door Morris: Pbr ASTH nrt week, attached Is a draft of oar suggestions for physical properties and test cathode for spxuysd-on fireproofing nsteiials* With the exception of Resistance to Posting, ve can tie all the other characteristics to an ASTH Standard in one fora or siather* *RLease note for the Bod Strength ve indicated a aiiriaua of 4 inches by 4 inches* I*n not sure whether the new GSA Interia calls for 6 inches by 6 inches or 2 inches by 2 inches as a sinirsa* In Corrosion Resistance ve suggest for ASTH to develop a teaperature and hunidity test instead of the current salt spray test* With reference to Resistance to Dusting, GSA currently calls for *01 grans* This at tines can be too severe* .1 / suggest ve call for *1 gran* With reference to purging, the longer the . purging the better* I ea sot sure whether ve have decided on 6 hours or longer. Also enclosed, is a statement which ve nay use to discard the sethod proposed ty Mr* Levy* When I see you in Atlantic Ciiy 1*11 abov you a daaageabUlty type test which ve originally proposed to San Francisco, which to us seess Hke a sore reasonable teat* In case you have to get hold of ae 1*11 be at the Tides Motel, telethons cusber 344--5173* Sincerely yours, TJ3IT3D STATES HI2ERAL PRODUCTS CGiPAHI JHS/ec Attachments OQI t/w. J* P* Verbalan Prank K* Stuapf Tice President - Research DS17T Jus* 23* 1966 _____ XHXS2C1L PROPSRIISS ASD 7SST >CTHOES TO DSTEEKIlg StTOASrUTT 07 SFRATSP-Cff yi35PB00m0 MATERIALS ,yirg_.H8i3ta5ce. Fepferaypg^ -- Shall b* reported is hours and tasted is accordance vith Standard Hethod for Firs T*st of Slotting Cons traction and Material*, ASTM E-219 firq Hazard, Classjflcatloq -- Shall be reported as Flag* Spread, Foal Contributed, floolca Developed aad lasted in accordance vith Standard Method of Te*t for Surface Burning Characteristics of ftrfTdiwg Materials, A2TH E-S4. Thickness - Shall be reported to the nearest 16th of an inch tested in accordance vith Standard Method of Test for Thickaaae and Density of Blanket and Eatt Type Thera* Insulating Materials, ASTM C-167. Penalty - Shall be reported to the nearest 1/lOth of a pound per cubic foot and shall be determined in accordance vith Standard Method of Teat for Thickness and Density of Blanket and Salt Type Thermal Tubulating Materials, ASTM C-167. i Bond Impact Test -- The saterial being tested shall not crack or delaninate frca the surface to which it is applied and is tested in accordance vith Strength Test of Banal: for Building Construction, Section 61-62 (Impact Load of Floor Test) ASTM 2-72. The specimen, shall be a complete floor axaeably, 2 ft. vide by 8 ft. long unsupported, ard a 60 lb. sand bag shall be dropped froa a height of 4 ft. Bond Strength - The cdsisua bond strength shall be 20 tines the weight of the applied product vhen tested in accordance vith Standard Method of Tension Test of Flat Sandvici Construction in Flatwise Plane ASTM C-297. The test specimen shall be a rdsisia of 4* 4* and the naterial applied 3/4" thick to shop coated and/or galvanised steel. Corrosion Besistanee - Corrosion occurring on the sprayod specimen shall cot be greater than on similar uccprayed specimen when tested in accordance vith Standard Method of Sa Spray (Fog) Testing ASTM B-117. Shop Coated an/galvanlsed steel shall be sprayed vith -continued- -2- 1/4* firs protection tad tested along vith n^prayed contra! sections* ) 4 This sslt iprej test Is sot really applicable for testing bailding constructions tad thexsfbr* It is In order for ASTX to develop a new test sethod vfcioh would inrolT only tenperature sod bisidity to inrtuoe corrosion ririlar to Military Specification H2L-S-5272C, Bmddity Tast. Procedure.' V. Bgflgtasct t? Dusting - The dust aaciaalated shall not exceed ,01 or grass per squi foot when tested la accordance with the following test aethod. the teat shall be cade in a suitable type aetal duct vith a filter at the blower end and s dust collecting blade doth over the opon end-. Test apecisen of the specif! aisrfsiai density for the'-type of a&tarlal proposed for use shall be placed in opening inside of diet sc that the face of the saaple and inside face of the duet are on the sane plane. Air Telocity shall parallel the face of saaple. After 6 hours - 21 hours of purging, the spednsn is tested for 24 hours vith an inpinging Telocity on filter of sinisub SCO ft. per sdaite and an issuing Telocity of sinton 270 ft. per rdsute. Speoiaen hai3 have a ywiMyr^m surface area of 4 square feet. Deflection Test -- The applied saterial shall not orach or dalaairate when the backing to which it is applied is subject to a downward deflection of l/l20th of the span when .t tested in accordance vith Standard Method of Test for KLexural Strength of Concrete C-293. The natexial is applied to 6* by 24" steel plates and tested on 22* span cental / OSiM * 22, 1966 Oar creyftiy has locked into the method to drteralne durability (danageahility) % of sprayed fireproofing, u outlined to JLSTM by Hr. Bobert C Ivy, Superinterd^it of the San Francisco Bureau of Building Inspections* Va find thin nathod act to ba applicable sines It essentially defines cue type of physical characteristic for one type of fireproofing naterial* Fssentially this sethod fivers osa typo of material orar another and is act truly durability or dasegeability* Tor esaaple, a brittle grasalar natexial say easily pass this test, bit when atruck with sogo large object, can cone loose end fall in large sheets* X rery toug fibrous naterial, on the other hand, is easily caught by the fingers canning failure This satsrial, however, can repeatedly be hit and squeezed and yet not shov ary sub stantial evidence of being damaged. Other nethods are available which will sore truly shov the durability aspects o1 sprayed-on as veil as other applied fireprooXing'aataiiala*