HomeMy WebLinkAboutEngineer's Letter-Wind Loading 01.14.2025Ernest Kollar Engineers. Inc.
320 Main St., Suite 203
Carbondale, CO 81623
Phone (970) 963-3223
erniekollar@gmail.com
January 14,2025
To: Garfield County Building Department
Re: Robert and Mary Schoofs Proposed Residence
285 Hidden Valley Drive
Glenwood Springs, CO
Regarding the wind loading for the above-mentioned project, I have the following
comments:
The 105 mph, Exposure C wind loading shown in the permit drawings dated 1212012024
is correct. lt is based on the 2021IPiCIIBC which refers to ASCE 7-16. The loading
applies to Risk Category II buildings. There was a significant reduction in wind speeds in
the Western states (approximately 15%) from the 2015 IRC/ IBC and ASCE-10 codes.
I realize Garfield County is still using the 2015 code but assume transition to the 2021
code will occur soon.
Please contact me with any questions,
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Emest Kollar, PE
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