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� , . <br /> � e. Location of placement <br /> � f . Any pertinent information addition of water, <br /> addition of admixtures, etc . <br /> � Perform one 7-day and three 28-day compressive strength <br /> � tests . (Use one as a spare to be broken as directed by <br /> the Structural Engineer if compressive strengths do not <br /> appear adequate from the first two 28-day tests . ) <br /> , 4 . Report in writing, as directed by the <br /> Architect/Structural Engineer, on the same day that <br /> test are performed. Reports of compressive strength <br /> � tests shall contain the project identification name and <br /> number, date of concrete placement, name of concrete <br /> testing agency, concrete design compressive strength, <br /> � location of concrete placement in structure, concrete <br /> � mix proportions and materials, compressive breaking <br /> istrength and type of break. <br /> , ( B. The ready-mixed concrete plant shall be certified for <br /> j conformance with the requirements of the National Ready <br /> � Mix Concrete Association. <br /> ' 1�. 05 CONCRETE MIX DESIGN <br /> I <br /> � ; A. Establish concrete mix design proportions per ACI 318, <br /> � Chapter 4 . <br /> ' B. Submit three copies of the concrete mix designs . Include <br /> � , the following: <br /> 1 . Type and quantities of materials <br /> 1 2 . Slump <br /> � <br /> 1 3 . Air content <br /> � <br /> 4 . Fresh unit weight <br /> ' ' 5 . Aggregates sieve analysis <br /> � 6 . Design compressive strength <br /> � 7 . Location of placement in structure <br /> � 8 . Method of placement <br /> 9 . Seven day and 28-day compressive strengths <br /> � <br /> � <br /> � November 25 , 1998 03300-3 98088 . 00 <br /> I I <br /> i <br /> ' I <br />