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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />SECTION 03302 <br />CONCRETE <br />PART 1 GENERAL <br />1.01 SUMMARY <br />A. Concrete shall consist of Portland cement, aggregates, water and <br />admixtures when approved for use. <br />B. Contractor shall submit any proposed admixtures, the use of additional <br />cement for higher strength or the use of Rapid -hardening hydraulic cement <br />when not specified. <br />C. The Contractor shall notify the Engineer one business day and at least 24 <br />hours prior to placing concrete. Contractor shall place concrete in the <br />presence of the Engineer. <br />D. Contractor shall prepare subgrade as shown in this Contract prior to <br />placing concrete. <br />1.02 REFERENCES <br />A. The following references are applicable: <br />1. ASTM C150, C143, C39, C33 <br />2. ACI <br />3. Standard Specifications, Section 90. <br />[ KikltYi1: T1110If,`I .y <br />A. The Contractor shall submit documents for any material substitution in <br />accordance with Section 01300, "Submittals." <br />B. The Contractor shall submit a Certificate of Compliance signed by the <br />Contractor identifying the cement, the source and quality of concrete <br />aggregates and stating that all comply with the specified requirements. <br />1.04 QUALITY ASSURANCE <br />A. The Contractor shall use the specified concrete type, mix, compressive <br />strength and slump. The Contractor shall submit a legible certified weigh <br />master certificate for each load of concrete. <br />North County LFG Collection System 1 CONCRETE <br />San Joaquin County Public Works Section 03302 <br />