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FILE NAME: WR Grace (WRG) DATE: Unknown DOC#: WRG 124 DOCUMENT DESCRIPTION: 0000 Report from Construction Products Division on Steel Surface Characteristics. Marked Plaintiff's Exhibit 280. CONSTRUCTION PRODUCTS DIVISION C. II. Steel Surface Characteristics (R. Bragg) BSeeycotniodndHefIle, ctthioencphoemteincatila, lpahnydsimcaalgncihtuadreacatserriesptiocrstedofIn faidrheepsriooonfeodf Msuornfoa-cKeosteatroe voef rdtiecepalccoonlcuemrnns. oBrobeparmobsleemxsisot f for two reasons: a) bCeoilnumgnssomanedwhbaetamrussatyreanrodugphittseudrfaact et,imgeenoefrally fireproofing. They are not galvanized. b) Bmeeccahuasneicoafllycoinstoluorc,kesdpratoyetdhefisreepsrhoaopfeisn.g As ulsrofancoe sp, ropbrolebmasblyo fbeacdahuesseiotnh eerxeisat reonnof l ulat er gde gpallavnaenizaeredasdecokf pfirroeopfrionogf.ing to accumu.late -dimensional changes of the fire Aonse"rfiloautspplaroteb"lemseoctfioandsheosifongaelvxainstizsewd isthtesetla.ndSaurdchMsoencot-iKoontse M(aKs-ht)heareInllaanrgdeBFinpuonrbtiroonksenoafrethae, bUeLinBglen2dknDveicdkecboyattehdewleitnhgth * of deck between supporting beams. pCrhoedmucictaltloy,atdhheerree'atoppseuacrhs nzoinrceacsooantedfosruarfagycpessu.m bAosunadmpaltatsetreor f breecohordt-,disptpeeedl iosn zainbcatcchoabteadsibsy, oeirthceorntoinfutowuoslpyrorucnestsherso.ughI tZmnay pdelactkintegstseodluatitoUnLs. onT9he*1c8o-7n0ti,nuaonudsipt ropcroevssidwesasthuesedsmoonotthheestInolfand Zn surfaces. pSltaantedabryd pMhoynsoi-cKaoltemaenadnsMoKn-hlyc,anieagdrhoewrethtoofsmhyodorthategdalvCaaSn0i2z*e.2dH2fOlat into the minute imperfections of the Zn treated surface. t 15870 I PLAINTIFF'S 1 EXHIBIT I O arattea.*ur\Yca I CONSTRUCTION PRODUCTS. DIVISION ASUttLacohned20fifnudlltwsocasluemfmiarrey tcehsatrsts. sThohveinfgirMstK-c3hpaerrtfolrims tasnceall* tfhluictkendesssecotifonMsK-v3*ithTohenlysecoonneddcrohpa-rot usth,owcasufsierdebtye sext cess wcoitnhstdrurocpti-oonust ocofnMtaKi-n3inegxpseirgiennicfiecdanont aarlelassuochf tfelasttsp. laTtehe, se ochf aart1s00a$refplaretfapcleadtebycomnyst2ru-1c9ti-o7n0 mfoemroapUro.Lte. sstipnegcimseelne.ction Aa lvsoaraietttaychoefdsufirnfadceastaabtleamrbeipeonrttitnemg pMeKra-3tubraensd. pIenrfdoircmaatendceinto mtheeanrsigfhaitluhraendoccocluurmrendiswitthheinstihtee Mofonfoa-iKluotree.. STuhche vvoalrvdescochaensive be considered a measure of tensile strength. 5880