Flood Venting Codes & Standards

Fema Technical Bulletin 1: Openings in Foundation Walls and Walls of Enclosures (TB-1)

Provides guidance on the National Flood Insurance Program (NFIP) regulations concerning the requirement for openings in below Base Flood Elevation (BFE) foundation walls and walls of enclosures for buildings located in Flood Zones A, AE, A1-A30, AR, AO, and AH. Go to page 25/26 to view the certification requirements for SMART VENTSin the section titled “Engineered Openings with ICC-ES Evaluation Reports.”

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Non-Engineered Opening Guide

The Non-Engineered Opening Guide guide assists in the compliance and measurement documentation of non-engineered flood openings for the elevation certificate in accordance with the National Flood Insurance Program. This guide was developed by the collaborative efforts of Carolina Flood Solutions LLC, and Flood Risk Evaluator (F.R.E.™) , a division of Smart Vent Products, Inc. An engineer conducted an independent evaluation of each Non-Engineered Opening vent included in this guide. Each vent was drawn to scale in AutoCAD® providing a 1/64th of an inch accurate calculation.

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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. The standard is adopted by reference in model building codes.

Go to Page 10 to view the Engineered Opening and Non-Engineered Opening Requirements.

Notes:
• 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.

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iCodes

The 2009, 2012, and 2015 International Residential Codes (IRC) and International Building Codes (IBC) establishes the minimum regulations for all dwellings, houses, buildings and structures. Below are selected pages from these code books that pertain to flood opening requirements. *Excerpts of the I-Codes are reprinted with permission of the International Code Council.

Download Related Section of 2015 IRC
Download Related Section of 2015 IBC
Download Related Section of 2012 IRC
Download Related Section of 2012 IBC
Download Related Section of 2009 IRC
Download Related Section of 2009 IBC

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Insurance Agent's Lowest Floor Guide

The Insurance Agent's Lowest Floor Guide will assist you in determining the lowest floor for flood insurance rating purposes

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Make sure to refer to your local State Uniform Code Book