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a. ',ontractor shall ' rn;sh all labor, material and equipment to <br />install all concrete orcc,rk as shown on drawings. <br />b. ^nncrete mix to be r--T)ortioned to nrovide 3,000 nsi mirimum <br />comoressi-e strenr,t', r ?R days. <br />r. Portland cement s'-p7l -onform to latest edition of AST"4 Standard <br />Snec _fir_ati ons -. ^`•ne T. <br />5DILME <br />