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9-36 SHAFT RELATED n1ATERIALS <br /> 9-36.1 Cast-In-Placc Concrctc <br /> Add the fullo�sing as a new section: <br /> Unless othen��ise notcd,cement shail be standard brand Poriland Cemen!ASTD7 <br /> C150,Type I or Type 11.All cement to be of same brand �rith no interchanging oi <br /> types; Standard Grey color. <br /> Concrete shall comply with the follo��ing criteria: <br /> Compressivc strengAi(ASTM C39) shall be a minimum 3.000 psi at <br /> t���cnty-eight (28) days. <br /> Slump range (ASTM C143) shall be two (2)to four(4) inches. <br /> All course and fine��ashed aggrcgate shall consist of hard, tough, durable <br /> particles fi�ce from foreign materials and ���ithout a clay. silt, or dust la�cr. <br /> Aggmgates shall conform to ASTM C88.Aggregate gradation shall conform to <br /> ASTM C33. The maaimum size of coarse aggregate shall be three-fourihs(3/4) <br /> inch. <br /> \1'ater used in the concrete mix shall be clear and free from injurious amounts of <br /> oil, salts, acid, alkali, organic matter, or other deleterious substances. Do not rc- <br /> temper mix by adding�vater in the ficid. <br /> 9-3(.2 Lumbcr <br /> Add the follo�ving as a new section: <br /> Alllumbcr shall be of the size and grade noted on Pluns. All lumber shall be <br /> surfaccd on all sides.All lumber shall Ue kiln dried to an equilibrium moisture <br /> coutent and shall be stored in such a manncr as to remain in same condition until <br /> placcd into thc ��•ork. <br />