GAIL (India) Limited

37Without relieving the Contractor of the responsibilities for the correctness thereof, the reinforcement shallbe inspected and approved by the Consultant in writing before any concrete is placed and the contractorshall allow sufficient time for such inspecting and any subsequent remedial action to be carried outNo part of the reinforcement shall be used for conducting electrical currents.4.8 COVER TO REINFORCEMENTUnless shown otherwise on the drawings, minimum cover for all reinforcement shall be provided as perIS: 456 care shall be taken to maintain the correct cover to reinforcement.For concrete members exposed to weather, earth, action of harmful chemicals, acid vapor, salineatmosphere, sulphurous smoke etc minimum cover for reinforcement shall be increased by 15 cm to 40mm as directed by the Consultant / Engineer-in-charge.The maximum cover for reinforcement shall not be greater than that specified above or shown on thedrawings plus 10 mm except for bundled bars.For bundled bars, minimum, concrete cover shall be equal to the equivalent diameter of the bundle butneed not be greater than 50 mm.Exposed reinforcement intended for binding with future extensions shall be protected from corrosion asshown in the drawings.4.9 CLEANINGAfter placing, the reinforcement shall be maintained in a clean condition until the concrete is placed. Onno account the bars shall be oiled or painted or mould oil used on the formwork be allowed to come incontact with the bars.Before concreting is commenced, the bars shall be thoroughly cleaned with dry gunny bags if they arecoated lightly with rust or other impurities.4.10 WORK WILL INCLUDEa) All cutting to lengths, labour in bending and cranking, forming hook ends, handling, hoisting andall that is necessary to fix reinforcement in work as per Drawings and specifications This shallalso include all that is fairly intended and is necessary for completion of work.b) Cost of pre-cast concrete cover blocks to maintain cover and holding reinforcement in position,chairs, spaces, dowels, pins, laps, etc.c) For fabricating and fixing reinforcement in any structural member irrespective of its location,dimension and level.d) Work at all levels.e) All the above mentioned works shall be included in the quoted rates Nothing extra shall bepayable to the contractor on this accountf) Reinforcement Steel procurement shall be done by the Contractor.5 SPECIFICATIONS FOR FORMWORK5.1 GENERAL5.1.1 DESCRIPTIONThis section covers the requirements for providing, fabricating and erecting of form work includingpropping, bracing, shoring, strutting, rising, bolting, wedging and all other temporary and all othertemporary supports to the concrete during the process of setting subsequent removal of forms.