American Society of Civil Engineers: Flood Resistant Design and Construction (ASCE 24-14)
Prepared by the Flood Resistant Design and Construction Committee of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCE Flood Resistant Design and Construction, ASCE/SEI 24-14, provides minimum requirements for design and construction of structures located in flood hazard areas and subject to building code requirements. Identification of flood prone structures is based on flood hazard maps, studies, and other public information. This standard applies to new structures, including subsequent work, and to work classified as substantial improvement of existing structures that are not historic. Standard ASCE/SEI 24-14 updates and replaces the previous Standard, ASCE/SEI 24-05. It provides essential guidance on design and construction to structural engineers, design professionals, code officials, floodplain managers, and building owners. The standard is adopted by reference in model building codes.
Go to Page 10 to view the Engineered Opening and Non-Engineered Opening Requirements.
- All flood openings “shall not be less than 3 in. in any direction in the plane of the wall.”
- Any flood opening “shall be classified as partially obstructed if louvers, blades, screens, grilles, faceplates, or other covers or devices are present during the design flood” and use the partially obstructed shape Coefficient of Discharge requirement.
- V-Zones: Flood Openings are now required in Breakaway Walls.
Go to Pages 45-46 to view commentary on Engineered Opening and Non-Engineered Opening Requirements.