Common use of Formwork Clause in Contracts

Formwork. Formwork shall be true to line, level, face and profile and be of robust construction adequately framed, braced, strutted, cramped, tied and propped to restrict deformation due to constructional loads to not more than 3 mm, and to entirely eliminate deformation of the form faces by warping or buckling. Wire ties will not be permitted. Formwork shall be grout – tight under all conditions including vibration when specified or used. Formwork shall be designed to allow prefabrication of conveniently sized elements to facilities ease of handling and assembly, to permit striking without force shock or any damage whatever to the concrete member or formwork faces and to permit the removal of sides without disturbing soffits and soffits without disturbing necessary props. Propping shall be carried down to an approved bearing, shall not be supported by timber floors and shall be arranged that formwork may be lowered smoothly. Re-propping will not be permitted. Provision shall be made for cleaning out and draining. Formwork shall be constructed of material or lined with material as may be necessary to achieve the finishes specified herein and in such a manner as to eliminate screw or nail imperfections. Before each use, form faces shall be treated with the minimum amount of approved mould oil necessary to obtain a clean release. Mould oil shall not come into contact with the reinforcement. The use of cement retarders will not be permitted except where a key for other finishes is required. Before placing of the concrete, bolts and fixing shall be in position and cores and other devices used for forming openings, holes, pockets, recesses, ducts or other cavities shall be fixed to the shuttering. Immediately prior to concreting, formwork shall be thoroughly cleaned out and re-checked. No placing shall commence until the Engineer has inspected the formwork and given his consent for concreting to proceed, but such consent shall not relieve the contractor of his responsibility for its sufficiency. After striking, formwork shall be cleaned, stacked and protected and before re-use shall be serviced, made good or replaced with new as may be necessary to maintain the finish and standard. Specification Concrete Work (2/F/12)