ASABE Revises Code Standard for Agricultural Envelopes

New rules should help design more resilient buildings in the face of extreme weather events.

As reported by

The American Society of Agricultural and Biological Engineers (ASABE) has completed a revised standard, ANSI/ASAE EP484.3 DEC2017, Diaphragm Design of Metal-Clad, Wood-Frame Rectangular Buildings.

The standard was revised to incorporate data from research completed at Washington State University through the National Frame Building Association. Additions include support information and design considerations for unit shear strength of steel clad wood-framed shear walls.

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EP484.3 is available now and will be submitted for incorporation into the next version of the International Building Code (2021 IBC Section 2306 on Allowable Stress Design for wood materials).

ASABE members with standards access and those with site-license privileges can access the full-text via electronic download on the ASABE online Technical Library at Others can obtain a copy for a fee directly from the library or by contacting ASABE headquarters at

ASABE is recognized worldwide as a standards developing organization for food, agricultural, and biological systems, with more than 260 standards currently in publication. Conformance to ASABE standards is voluntary, except where required by state, provincial, or other governmental requirements, and the documents are developed by consensus in accordance with procedures approved by the American National Standards Institute. For information on this or any other ASABE standard, contact Scott Cedarquist at 269-932-7031, A current listing of all ASABE standards projects can be found on the ASABE web site at

ASABE is an international scientific and educational organization dedicated to the advancement of engineering applicable to agricultural, food, and biological systems. Further information on the Society can be obtained by contacting ASABE at (269) 429-0300, emailing or visiting

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