particular specifications (road works) - CIDCO Maharashtra Ltd.

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CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 538 11.3 Joints of brick work shall be squarely raked out to depths of not less than 1 cm. as the work proceeds. After raking, surfaces shall be cleaned with wire brush and washed with water before plastering. 11.4 All brick work shall be built in cement mortar 1:4 as specified in Schedule –“A” item. 11.5 Tops of walls having P.C.C. for fixing C.I./R.C.C. cover shall be finished with a layer of cement mortar (1:4) 20mm thick. 12.0 Construction of B.B. Masonry Chamber, supplying and fixing RCC frame and cover and road box : This item includes all materials and labour mentioned hereafter, bricks road box, RCC Cover, excavation, laying cement concrete, B.B. masonry, plastering and refilling, fixing of box so that the top of the box shall be 100mm above the ground level. The necessary locking arrangement and lock to be made for S.V. chamber cover. The precast for RCC cover (heavy duty) shall be tested in any approved laboratory and the results got approved before fixing the same.
CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 539 SPECIFICATIONS FOR READY MIX CONCRETE 1.1 Batching of Concrete ingredients: For all concreting, only Ready Mixed Concrete (RMC) manufactured at site is mandatory, weigh batching plant or obtained from approved R.M.C. supplying agencies or produced at site using mechanical mixers and weigh batchers as per item description, will be used. The R.M.C. supplying agency will supply mix design details in advance before start of delivery. 1.2 Transporting, placing, compacting, finishing and curing: Transporting, placing, compacting, finishing and curing of concrete shall be in accordance with IS: 456-2000. 1.2.1 Transporting: 1.2.2 Placing: For all RMC concreting, the concrete after discharge from batching plant will be loaded in transit mixers and kept continuously agitated while mix is in transit. At destination the mix will be unloaded in to the hoppers of concrete pump. For site made concrete suitable prescribed methods shall be adopted. The concrete produced in RMC plant/batching plant, when discharged from transit mixer in pump hopper shall be kept continuously agitated and pumped to destination placing point. Site made concrete shall be placed by approved method of placing. The height of any single lift of concrete shall not exceed 1.5 m for walls and 2.0 m for columns. For columns where the height of pour is more than 2.0 m, suitable arrangement in formwork should be
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