ACI MNL-66(20) PDF Download

The ACI Detailing Manual, MNL-66 (20), is a comprehensive guide that addresses the detailing questions and concerns of professionals in the field of concrete design and construction. Divided into three sections, the manual offers valuable information and resources for design engineers, architects, contractors, detailers, and engineering students.

Section 1 provides designers with guidance on determining the necessary information and design details required for reinforcing steel fabrication and placing drawings. Emphasizing the importance of clear and unambiguous communication between the designer, fabricator, and placer, this section helps ensure that the design intent is accurately captured.

Section 2 consists of over 100 individual details accompanied by corresponding checklists. These details serve as examples of effective ways to convey design information to contractors. Aligned with the "Building Code Requirements for Structural Concrete (ACI 318-19)," these details were prepared with input from detailers, contractors, and engineers.

Section 3 offers a compilation of 37 articles from Concrete International, focusing on concrete detailing. Authored by detailers and practicing engineers, these articles address constructability issues related to reinforcing steel. They cover topics such as tolerance cloud, reinforcing bar modeling, and callout clarity, providing practical solutions based on industry experience.

Additional reference data can be found in Section 4, which includes chapters on reinforcing bars, wires, bar supports, spirals, mathematical formulas and tables, and common symbols and abbreviations. This section serves as a valuable resource for professionals working on concrete detailing projects.

It is important to note that while the manual provides examples and guidance, it is not the only way to satisfy the requirements for every project. Engineering judgment and customization specific to individual project requirements are necessary for successful implementation of the detailing standards. The manual also encourages professionals to contribute their insights and suggestions for future editions.