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aim.. ♦v. ♦jw a. .1.+ .nw+ w" I,'r UO <br />a9/13/1997 13:06 2066440463 <br />KIA CO <br />FADE 02 <br />KIA Go <br />September 13, 1997 <br />Ferrari Design Group Architects, PS <br />12277 134TH CT. NE <br />Suite 203 <br />Redmond, WA 98052-2433 <br />Acts: Mr. Frank HeflTsman <br />PMject 75th A Hardeson, Building "A" <br />Low Strength Concrete at Panels 2, 4,11 & 35 <br />lroject Me: 9714A <br />ex ir" P/acr N.E. <br />BWAr". NM OWN <br />Pnora am 641•NOt) <br />far206.add-OM <br />Enclosed are calculations fbr above mentioned panels at building -A of 75th and <br />Ho desoo. Test results indicated concrete strength below 4000 psi. Tat results we used <br />to redesign the panels in question. <br />1. rc=3$40 psi at ponds 2, 4 and 8. <br />Concrete strength above 3000 psi is satisfutory for the above panels per <br />enclosed calculations. <br />2. Fc-3620 psi at panel 33. <br />In our opinion this pane is acceptable even with panel deflection about 1/8' <br />over UBC allowable limits m RW-5/5). Concrete will keep on pining <br />strength a time Boas by, and also contrectt r indicated that this concrete was <br />actually mimed in with another concrete mix with Idghw strength, but lower <br />Wongth ooncrate was toted only. <br />Please call if you have any questions. <br />Kier Co. <br />�'X <br />Ali Ghassemikia <br />cc: Bob Waggie, SGA Corporation <br />