Contractors, CIM research finds mockups best ACI 347 formed-surface criteria

Sources: American Society for Concrete Contractors, St. Louis; CP staff

Researchers evaluating the American Concrete Institute’s Guide to Formed Concrete Surfaces (ACI 347.3R-13) contend that a) suggested measurements or other criteria used in assigning a given formed surface to one of the document’s four categories is neither objective nor practical; b) converting ACI 347.3R-13 recommendations to specification requirements could result in disputes and litigation; and, c) preparation of concrete mockups for architect or engineer approval is superior to the guide’s methodologies.

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