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CITY OF SANTA ANA <br />SPECIFICATIONS <br />PROJECT NO.: XX-XXXX <br />PROJECT TITLE <br /> <br />35 <br />1.14 PORTLAND CEMENT CONCRETE (PCC) GRINDING <br />Grinding existing PCC curb and sidewalk shall be done as shown on the Plans. Grinding <br />shall be done with a power-driven machine that will leave a finished surface comparable <br />to the adjacent sidewalk surface. Excessively smooth surfaces which will become <br />slippery when wet are not acceptable. <br />Unless shown otherwise on the plans, the grinding width shall be assumed to be one-foot <br />wide. <br />Limits of PCC Grinding shall be measured along the uplifted edge. <br />1.15 PORTLAND CEMENT CONCRETE (PCC) PAVEMENT CONSTRUCTION <br />PCC Pavement and bus pads shall conform to Section 302-6 of the Standard <br />Specifications and these Special Provisions. <br />PCC used for street pavement and bus pad construction shall be minimum class 560-A- <br />3250. In addition to these minimum requirements, the concrete shall possess the <br />following 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 <br />test 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 <br />tamper except where existing gutter is to remain as shown on the construction <br />Plans. <br />Concrete pavement for bus pads shall be installed monolithic with the PCC curb and <br />gutter. <br />505 E Central Ave <br />#B11/6/2024