The (reapproved in 2021 as ACI PRC-347-14 ) is a pivotal document published by the American Concrete Institute that serves as the primary "Guide to Formwork for Concrete". This guide is widely regarded as the industry standard for the safe, economical, and high-quality design and construction of concrete formwork in the United States and Canada. Overview and Scope of ACI 347-14

The relevance of this document spans across multiple roles in the construction ecosystem:

Use ACI 347-14 only for existing contracts. For new designs, purchase ACI 347-22.

The document begins by establishing the responsibilities of the contractor and the engineer. It mandates that formwork must be designed to resist all anticipated loads, including vertical loads (dead load of concrete plus construction live load) and lateral loads (wind, seismic, or lateral pressure from concrete).

ACI 347-14 has been updated. The current version is ACI 347-22. However, ACI 347-14 is still widely referenced in existing construction contracts, municipal codes, and academic programs.

ACI 347-14 is a standard document published by the American Concrete Institute (ACI). It serves as a comprehensive guide for the planning, design, and execution of formwork—the temporary or permanent molds into which concrete is poured.