Document RpVVbdok7G1jQem713v73O18z

SUITB 2300. ONE WALL STREET, NEW YORK, N. Y. 10003 f. VTXMAizx, mxaxxr UaM tom Himnl a. 1 iiNOn. via KJ-ukw.iAv.iQttMxi.oHUj.i.iiyeuTAi H, l. UVTNI.TltAjmn January 11, 1967 To: J. P. Verhalen A. E. Binge r J. H* Wittkop H. L. Levine J. Boyer F. Stumpf J. O'Rourke L. C. Jenne H. Wilson R. Toth S. Milfcr John Baer Gentlemen: %n f 1 7>*f -Cc ' / ,-7 //^/6V/ er"' / Attached hereto you will find recommended draft of specifications for sprayed mineral fiber as prepared by the Technical Committee. Very truly yours, PLAINTIFFS EXHIBIT USM-247 iJ. G^ygua JanaiTy 5, 1967 SSCOKP DRJUT SP3SI7ICATIOH FOR SPRAYS) HDCTA1 71351 fireproofing Treatnent Acoustical Trntawt Themal Insulation Trsatasnt Scope - This section shall include naterials, equijaent aM labor for the installs- tlon of spraysd ninsral flbsr la accordance with specifications and drawings* Contractor - Ths contractor shall bs approved by the aarnifaeturar of ths spraysd ninexul flbsr. Ths contractor shall use materials and equipaent approved by ths naau- factursr and shall execute all work in accordance with nanufactursr's instructions* Product Cospliaacs - Ths nanufactursr of ths spraysd ninsral fibsr shall provide data to indicats eonfozsity with specification rsquireaents to authorltlss having juris diction. KJLTSP.IA1S Adhesive - When'required ths adhesirs shall bs approved by the sprayed ninsral fiber nanufaeturer* r- Plber - Ths spraysd nintzal fiber shall be a factory blend of fiber and binders in / accordance vith proprietary requirements of ths saaufactursr, and shall bs delivered to ths job sits in sealed and properly identified bags* -continued- Cf ' srccao DHAFT L ____ 7^ Jasuajy 5, 1967 '! HlTSPlALS - eontiaied Sealer - When required the sealer shall b approved by the sprayed mineral fiber manufacturer* ~INSTALLATION Vork of othera - The general contractor shall proride adequate electric power, 4 weter, ventilation, light cad heat, ill clips, header ta.be,, piceter rings, sleeves, supports cad other attaehsents to the base surface ere to be installed before work proceeds* Sasination of surface - The contractor shall exezine all surfaces which ere to b* treated with sprayed mineral fiber cad report la writing to the general contractor cay conditions which might impair proper iastcllctloa cad adhesion* Application shall not proceed until unsatisfactory conditions are corrected* Job cordjtio-a - Application shall be started only after the contractor is satis fied that surface and weather conditions are acceptable* Freezing weather applications shall follow the epreyed mineral fiber manufacturer's reccnnerdations. Application - The surface shall be vetted with water or cdhesire as recomaecded by the epreyed mineral fiber manufacturer* The fiber shall then be sprayed to the vet sur face to the desired thiclmess* Applied fiber may be left uatanped or taaped as per the sprayed mineral fiber manufacturer's recommendations* -conticued- * - T% * - ** > *<* 5EC0HD CUT? PSTJOUglCTr - continued -> January 5, 1967 Application - contl raied Th* finished thicixeee shall be soufficient to provide for fireproofing _____ hours of firs resistance Acoustic* Hoi** Reduction Coefficient Thermal Insulation . Resistance (R 7alu*) Tha surface 1* than *pr*7*d with vater or **al*r a* r*oosa*nd*d by th* sprayed mineral fiber manufacturer* Cleanup - After cospl*tion of vork th* contractor shall sweep clean all adjoining vails and floors upon which fiber has been deposited* / *. -rr-T