Drawings and specification are the fundamental tools designers use to communicate their intentions to prospective builders. Contractors need to carefully read and clarify concrete specifications before signing the contract, instead of struggling with them afterward when disputes arise. Important information needed by the form builder comes from contract drawings as well as specifications. In addition to a full description of the structure, general minimum requirements should be stated to assure the owner and designer that formwork will provide adequate support both during concreting and until the concrete has gained adequate strength to permit form removal.
The following questions usually need to be answered: * Who will design the formwork? * Who will inspect the formwork? When will formwork be inspected and for what features? * What approvals will be required for formwork drawings, for forms before and during concreting, and form removal and reshoring? Who will give such approvals? In most cases, the contractor will plan and design the formwork, frequently with the assistance of a professional engineer. With the exception of unusual or very complex structures, this practice is desirable since the builder is in the best position to evaluate available workers, materials, equipment, and systems, and to develop a strong and efficient forming method.