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8. Provide camber in formwork as required for anticipated deflections due to weight and pressures of fresh <br /> concrete and construction loads. <br /> 9. Fit forms placed in successive units for continuous surfaces to accurate alignment,free from irregularities,and <br /> within the allowable tolerances. <br /> 10. Provide formwork sufficiently tight to prevent leakage of cement paste during concrete placement. Solidly <br /> buttjoints,and provide backup material at joints as required,to prevent leakage and prevent fins. <br /> 2.05 EARTH FORMS <br /> A. Side forms for footings may be omitted, and concrete may be placed directly against excavation, only when <br /> requested by the Contractor and accepted by the Architect. <br /> B. When omission of forms is accepted, provide additional concrete 2" on each side of the minimum design profiles <br /> and dimensions shown on the Drawings. <br /> PART 3: EXECUTION <br /> 3.01 CONCRETE FORMWORK CONSTRUCTION <br /> A. Construct forms to shapes, lines and dimensions called for on drawings, true to line, plumb and level with joints <br /> mortar tight. Provide proper bracing and supports of sufficient strength to carry,without appreciable deflection and <br /> with absolute safety,the dead.load of concrete as a liquid together with live loads of men,equipment and materials. <br /> B. Provide sufficient forms so that work can be carried out without delay. Build forms of materials of sufficient <br /> strength to hold concrete without bulging or sagging between supports. For concrete to be exposed to the weather, <br /> glue or seal the edges to prevent loss. <br /> C. Securely place in forms all accessories specified and shown on the drawings. This includes anchor bolts,anchoring <br /> items,reglets,guards,curb angles,dock nosings,etc. Cooperate with all trades for installation of inserts. <br /> D. Provide openings, offsets, sinkages, keyways, recesses, moldings, reglets, sleeves, chamfers, blocking, screeds, <br /> bulkheads,anchorages,inserts and other features required. <br /> E. Comer Treatment: Unless shown otherwise,form chamfers with 2 cm x 2 cm(3/4"x 3/4")strips,accurately formed <br /> and surfaced to produce uniformly straight lines and right edge joints on exposed concrete. Extend terminal edges <br /> to required limit and miter chamfer strips at changes in direction. <br /> F. Edge Forms and Screeds: Set edge forms and screeds accurately to produce the designed elevations, slopes in the <br /> finished surfaces. Provide required slope to drains. <br /> G. Cleaning and Coating: Sweep;clean and coat forms before reinforcing is placed. <br /> H. Coat form contact surfaces with form-coating compound before reinforcement is placed. Do not allow excess form <br /> coating material to accumulate in the forms or to come into contact with surfaces which will be bonded to fresh <br /> concrete. Apply in compliance with manufacturer's instructions. <br /> I. Wetting Forms: In hot weather,wet down forms with hose immediately before placing concrete. <br /> 031004 No.99132-CP2 <br />