REINFORCED CEMENT CONCRETE Sample Clauses

REINFORCED CEMENT CONCRETE. Reinforced Cement Concrete in the Works shall be "Design Mix Concrete" as defined in IS 456/2000, for M20 and M30 grades. Nominal mix concrete may be used for concrete of lower grades i.e. lower than M20 grade concrete. 5.40.1 The specified characteristic compressive strength of 150 mm size cube at 28 days attained for M20 grade concrete shall be 20 N/sqmm and for M25 grade concrete shall be 25 N/sqmm respectively. The contractor is required to carryout the mix design and the mix so designed need to be got approved by the concerned Executive Engineer, Projects Division, Corporation of Chennai within the limitations of parameters and other stipulations laid down in IS-456/2000. The mix shall be designed to produce the grade of concrete having the required workability and a characteristic strength at 28 days not less than the appropriate values mentioned in Table-2 of IS-456/2000 i.e. 20 N/sqmm for M20 grade concrete and 25N/sqmm for M25 grade concrete respectively. The target mean strength of the concrete mix should be equal to the characteristic strength plus 1.65 times the standard deviation. 5.40.2 IS-3370 (Part-I), 1965, prescribes that the minimum quantity of cement used for the reinforced concrete work in the case of water retaining structures shall not be less than 330 Kg/cum. IS- 456/2000 prescribes the minimum cement quantity to be used for M20 grade reinforced cement concrete as 300 Kg/cum and M30 grade reinforced cement concrete as 320 Kg/cum respectively. The Ministry of Surface Transport (MOST) specifications prescribes quantity of cement to be used in the case of M20 grade reinforced cement concrete 380 Kg/cum, M25 grade reinforced cement concrete 400 Kg/cum and in the case of M30 grade reinforced cement concrete as 420 Kg/cum. In the preparation of estimates for this work, in the data the said quantities of cement as prescribed by MOST and as approved by Government vide G.O.Ms.No.30, dt: 19-3-2002, Irrigation & CAD Department (Projects Wing: COD), has been adopted. The contractor shall use the quantities of cement at site during execution of reinforced cement concrete work by design mix not less than as adopted in the detailed estimates i.e. in the case of M20 grade reinforced cement concrete 380 Kg/cum, M25 grade reinforced cement concrete 400 Kg/cum and in the case of M30 grade reinforced cement concrete 420 Kg/cum and shall use even more cement in above cases if required for attaining not less than the prescribed specified characteristic c...
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REINFORCED CEMENT CONCRETE. Stages Quality Control Considerations
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REINFORCED CEMENT CONCRETE. All R.C.C. work shall be of the grade not leaner than, M20 & M25 as given in the schedule and specifications and as per IS code 456-2000. The materials will be measured by weight when dry. The stone chips shall be thoroughly screened before use. If necessary, it shall be washed with water and stacked as per direction of E.I.
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REINFORCED CEMENT CONCRETE. X.Xx. Place Condition Degree of Value of Work 1. Workability Concreting of Medium ability 25mm to 75mm lightly reinforced sections without Vibration or heavily reinforced sections with vibrations slump for 20mm aggregate
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