Laserfiche WebLink
SECTION 02307 <br /> REINFORCED CONCRETE <br /> 1 . SCOPE <br /> A. The work covered under this section shall include, but not be limited to, <br /> concrete manholes , inlets , catch basins, curb, curb and gutter, street repair, and <br /> sidewalks . It shall include all materials, equipment, labor, finishing, form <br /> work and curing . <br /> 2 . GENERAL <br /> A . The concrete shall be a workable plastic mix composed of portland cement, <br /> fine aggregate, coarse aggregate, air and water proportioned and mixed to <br /> provide the strength of concrete called for upon the Plans . The water-cement ratio <br /> shall be kept to the minimum necessary to achieve proper placing and finishing . <br /> Any item relative to concrete or reinforcing under this item that is not covered <br /> herein, shall be in accordance with the ACI 318 -71 Building Code and the <br /> Design and Control of Concrete Mixtures by Portland Cement Association. <br /> Be Concrete mixing may be done in a portable mixer, a transit- mix truck, or if <br /> less than five cubic feet, in a mortar box; provided all ingredients . including <br /> water are accurately measured by weight or volume . Measurement by the <br /> " shovel full " is specifically prohibited. No mixer shall be loaded above its rated <br /> mixing capacity. <br /> Co Transit mix trucks shall not wash out their trucks on the site without the <br /> specific permission of the Engineer and any waste concrete shall be removed to <br /> a public dump . <br /> 3 . CEMENT <br /> A . Cement shall be portland cement conforming to ASTM C150 types I , IA, III and <br /> /or IIIA . Cement, if delivered to site, shall be in unbroken paper bags plainly <br /> marked with the manufactures name, the brand name, the type of cement, <br /> and the weight of cement in the bag. All cement shall be properly protected <br /> against dampness . Bags containing caked cement shall be rejected . Cement shall <br /> be used in the same order as received, that is first in, first out. <br /> 4 . AGGREGATES <br /> A . Aggregates shall conform to the latest Florida Department of Transportation <br /> Specifications for Road and Bridge Construction. Stockpiling of aggregates <br /> shall be done in such a manner as to prevent segregation or contamination. <br /> C : \ Down1oad \ techspec - 02307 . doc 02307 - 1 <br />