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An Assessment of Methods for Determining Wind Loads (NIST TN 1738)



Emil Simiu, Chris Letchford, Nicholas Isyumov, Arindam G. Chowdhury, Dong Hun Yeo


The purpose of this work is to present an assessment of methods for determining wind loads on buildings and other structures that warrant comment, correction or improvement. The assessment is intended to serve as a resource as a new version of the ASCE-7 Standard is being prepared. Is-sues discussed in the paper include: wind speeds in non-hurricane regions; alternative analytical methods for determining wind loads on Main Wind Force Resisting Systems and Compo-nents/Cladding; aerodynamic pressure coefficients; pressures on rooftop equipment; component and cladding pressures on arched roofs; and the wind tunnel procedure.
Technical Note (NIST TN) - 1738
Report Number


Arched roofs, rooftop equipment, wind engineering, wind loads, wind pressures, wind speeds, wind tunnels


Simiu, E. , Letchford, C. , , N. , Chowdhury, A. and , D. (2012), An Assessment of Methods for Determining Wind Loads (NIST TN 1738), Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 23, 2024)
Created March 1, 2012, Updated January 27, 2020