Committee Mission: Develop and report information on the analysis and design of concrete members subjected to shear and/or torsion in combination with bending and axial force, including prestressing.

Goals: 1) Assist 318-affiliated committees and subcommittees to address life-safety issues and to make other improvements in the ACI 318 Building Code; 2) Develop a committee document that provides guidance for the use of the strut-and-tie method as a full member design procedure, 3) Complete the review and distribution of a database of punching shear test data; Assess shortcomings in current punching shear provisions and provide evaluation of improved approaches; 4) Merge the beam shear database efforts of members of 445 for the development and distribution of complete (collection) databases for researchers and of reduced size (selected) databases for use in the evaluation of design code provisions; 5) Support ACI 318 affiliated committees to develop improved two-way and one-way shear design provisions; 6)Develop a new 445 committee document on torsion that presents design examples for challenging torsion design and assessment problems; 7)Work with ACI committee 446 in examining the roles of fracture and non-fracture bases for design provisions; 8)Work even more closely with other national and international agencies to advance the state-of-the-art; 9)Sponsor sessions focused on the dissemination of committee work.

Chair: Abdeldjelil Belarbi

TAC Contact: Robert Frosch

Upcoming Open Meetings:
ACI Spring Convention 2020 - 3/30/2020 2:00 PM-6:00 PM - London, Rosemont, IL

Upcoming Convention Sessions:
Examples For the Design of Reinforced and Prestressed Concrete Members Under Torsion, Part 1 of 2
ACI Fall Convention 2020 - Raleigh, NC

Examples For the Design of Reinforced and Prestressed Concrete Members Under Torsion, Part 2 of 2
ACI Fall Convention 2020 - Raleigh, NC

Published Committee Documents:
• 445.1R-12 Report on Torsion in Structural Concrete
• 445R-99: Recent Approaches to Shear Design of Structural Concrete (Reapproved 2015)

See all 445 Committee Documents...