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Committee Mission: Develop and report information on the deflection of concrete building structures.

Goals: 1. Complete a report on prestressed concrete deflections, and 2. Lay the groundwork to unify the two deflection report documents (prestressed and nonprestressed).

Chair: David Shook

TAC Contact: Lisa Feldman

Upcoming Convention Sessions:
Long-Term Slab Deflection: Practical Insights for Design Engineers
ACI Fall Convention 2025 - Baltimore, MD

Published Committee Documents:
• ACI PRC-435.8-85: Observed Deflections of Reinforced Concrete Slab Systems, and Causes of Large Deflections (Reapproved 1997)
• ACI PRC-435-20: Report on Deflection of Nonprestressed Concrete Structures
• SP-203: Code Provisions for Deflection Control in Concrete Structures

See all Committee Documents...