Special formwork may be required for uncommon structures, such as folded plates, shells, arches, and posttensioned-in-place designs, or for special methods of construction, such as slip forming with the form rising on the finished concrete or with the finished concrete descending as excavation progresses, permanent forms of any type, preplaced-grouted-aggregate concreting, underwater concreting, and combinations of precast and cast-in-place concreting.
Inspection of formwork for a building is a service usually performed by the architect, engineer, or both, for the owner and, occasionally, directly by employees of the owner. Formwork should be inspected before the reinforcing steel is in place to ensure that the dimensions and location of the concrete conform to design drawings (Art. 9.16). This inspection would, however, be negligent if deficiencies in the areas of contractor responsibility were not noted also. (See ‘‘Guide to Formwork for Concrete,’’ ACI 347R, and ‘‘Formwork for Concrete,’’ ACI SP-4, for construction check lists, and ‘‘Manual of Concrete Inspection,’’ ACI SP-2.)
Inspection of formwork for a building is a service usually performed by the architect, engineer, or both, for the owner and, occasionally, directly by employees of the owner. Formwork should be inspected before the reinforcing steel is in place to ensure that the dimensions and location of the concrete conform to design drawings (Art. 9.16). This inspection would, however, be negligent if deficiencies in the areas of contractor responsibility were not noted also. (See ‘‘Guide to Formwork for Concrete,’’ ACI 347R, and ‘‘Formwork for Concrete,’’ ACI SP-4, for construction check lists, and ‘‘Manual of Concrete Inspection,’’ ACI SP-2.)
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