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CITY OF SANTA ANA <br />SPECIFICATIONS <br />PROJECT NO. 11 -6416 <br />SEVENTEENTH STREET WATER MAIN IMPROVEMENTS <br />Portland cement concrete pavement replacement and bus pad replacement shall conform to <br />Sections, 400, 200, 201, and 302 of the Standard Specifications and these Technical Provisions. <br />PCC used for street pavement and bus pad construction shall be minimum class 560 -A -3250. <br />In addition to these minimum requirements, the concrete shall possess the following <br />characteristics: <br />- Flexural strength at 28 days: 550 p.s.i. min. <br />- Flexural strength at 7 days: 430 p.s.i. min. <br />- Compressive strength at 7 days: 2500 p.s.i. min. <br />All cement to be used or furnished on this Project shall be Type II low alkaline Portland <br />Cement conforming to ASTM C150. <br />Prior to the start of construction, the Contractor shall furnish to the Engineer laboratory test <br />data for the particular mix design he will use. The data will include the following: <br />A. A detailed concrete mix design including the type and amount of cement used; <br />complete gradation and source of the aggregate used; the amount of water used; and <br />any proposed admixtures. <br />B. Flexural strength test data for the same batch of concrete used in "A" above showing <br />the compressive strength of the concrete at 3, 7, and 28 days. <br />Section 302 -6.4.2 entitled "Tamping" of the Standard Specifications shall be modified by <br />adding the following: <br />The outer edge of the gutter shall not be used as a side form for the mechanical tamper <br />except where existing gutter is to remain as shown on the construction Plans. <br />Concrete pavement for bus pads shall be installed monolithic with the curb and gutter and <br />shall be accomplished in accordance with City of Santa Ana Standard Plan No. 1108. Payment <br />for the curb and gutter is included in the unit price for bus pad replacement. <br />Section 302 -6.4.4 entitled "Final Finishing" of the Standard Specifications shall be modified as <br />follows: <br />Delete all reference to wetted burlap. Final finish of the pavement surface shall be textured <br />by stiff brooming that will produce scoring perpendicular to the centerline of the street, <br />performed at a time and in a manner to produce a hardened surface have a coefficient of <br />T -3d <br />23A -99 <br />