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. 562 The formwork for beams and slabs shall be so erected so that forms on the sides of the beams and the soffit of slabs can be removed without disturbing the beam bottoms or props under beams. 5) Surface of forms in contact with concrete shall be oiled with a mould oil of approved quality or clean diesel oil. If required by the Engineer the contractor shall execute different parts of the work with different mould oils to enable the Engineer to select the most suitable. The use of oil which results in blemishes of the surface of the concrete shall not be allowed. Oil shall be applied before reinforcement has been placed and care shall be taken that no oil comes in contact with the reinforcement while it is being placed in position. The formwork shall be kept thoroughly wet during concreting and for all the whole time that it is left in place. 6) Immediately before concreting is commenced, the formwork shall be carefully examined to ensure that following: a) Removal of all dirt, shavings, sawdust and other refuse by brushing and washing. b) The tightness of joints between panels of sheathing and between these and any hardened core. c) The correct location of tie bars, bracing and spacers, and especially connection or bracing. d) That all wedges are secured and firm in position.
CIDCO OF MAHARASHTRA LTD C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 563 e) That provision is made for traffic on formwork not to bear directly on reinforcing steel. 7) Formwork shall be continuously watched during the process of concreting. If during concerting any weakness develops and formwork shows any distress the work shall be stopped and remedial action shall be taken. 1.15.7 Exposed Concrete Work: Exposed concrete surfaces shall be smooth and even originally as stripped without any finishing or rendering. Where directed by the Engineer, the surface shall be rubbed with carborundum stone immediately on striking the forms. The Contractor shall exercise special care and supervision of formwork and concreting to ensure that the cast members are made true to their sizes, shapes and positions and to produce the surface patterns desired. No honeycombing shall be allowed. Honeycombed parts of the concrete shall be removed by the Contractor as directed by the Engineer and fresh concrete placed without extra cost, as instructed by the Engineer. All materials, sizes and layout of formwork including the locations for their joints shall have prior approval of the Engineer or the Architect. 1.15.8 Camber: Forms and false work shall be generally cambered as indicated in the drawings or as instructed by the Engineer. However, for beams up to 5m span and slabs upto 4m span camber is not normally required to be provided.
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particular specifications (road works) - CIDCO Maharashtra Ltd.

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