ASCE 24: Flood Resistant Design
Standards for flood-resistant design and construction in flood hazard areas
Last updated: September 21, 2025
Overview
ASCE 24 provides minimum requirements for flood-resistant design and construction of structures located in flood hazard areas. The standard is referenced by the International Building Code and International Residential Code.
Key provisions include elevation requirements, foundation design criteria, flood damage-resistant materials specifications, and utilities protection requirements for buildings in Special Flood Hazard Areas (SFHA).
Key Requirements
- Buildings elevated above Design Flood Elevation (DFE)
- Flood damage-resistant materials below DFE
- Foundation systems designed to resist flood loads
- Utilities and equipment protected from flood damage
- Enclosed areas below DFE limited to parking, storage, and access
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