This was a major shortcoming of the old specification and typically resulted in costly disputes or repairs for concrete contractors, especially when surface defects were not defined in the project documents. The revised specification only requires the form- facing materials to produce the specified appearance and texture as specified for SF- 1. 5 also required facing materials to be set in an orderly and symmetrical arrangement and required the contractor to keep the number of seams to a practical minimum. Rough- Form Finish but had specific requirements for a Smooth- Form Finish that required the form- facing material to produce a smooth, uniform texture on the concrete. 0 no longer specifies form- facing material requirements. Provide mockup of concrete surface appearance and texture.įorm- facing material requirements. Surface tolerance Class A as specified in ACI 1. 0)Patch voids larger than 3/4 inch wide or 1/2 inch deep. Unless otherwise specified, provide mockup of concrete surface appearance and texture. Surface tolerance Class B as specified in ACI 1. Surface tolerance Class D as specified in ACI 1. 0)No formwork facing material is specified. Rough- Form and Smooth- Form As- Cast Finishes have been replaced with Surface Finish- 1. Specifications for Structural Concrete, which supersedes ACI 3. Three new surface finishes for as- cast formed concrete are defined in the new ACI 3. New Surface Finishes for As- Cast Formed Concrete.
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