HomeMy WebLinkAboutEngineer's Report 11.15.2016 - FoundationCIVCO Engineering, Inc.
Civil Engineering Consultants
P.O. Box 1758
365 West 50 North, Suite W-1
Vernal, Utah 84078
November 15, 2016
David Holland
Clayton Homes
671 23 Road
Grand Junction, CO 81505
Dear David,
Subject: Espino Foundation — TBD Chair Bar, Silt, Colorado
In the construction drawings that I prepared for the Espino residence at TBD Chair
Bar in Silt, Colorado (dated 09/28/2016), 1 site the 2012 IRC Code as a design
standard. I am writing to certify that the design also complies with the provisions of
the 2015 IRC Code as adopted Garfield County, Colorado.
Sincerely,
Vance V. King, PE
Engineer
CIVCO Engineering, Inc.
Enclosure
Cc: Project File
Phone (435)789-5448 * Fax (435)789-4485
Email: vanceking@civcoengineering.com
David Argo
From: Vance <vanceking@civcoengineering.com>
Sent: Tuesday, November 15, 2016 4:55 PM
To: 'Holland, David'
Cc: David Argo
Subject: RE: Dry Hollow Ranch, Lot 1- Permit #BPMF -10-16-4469 Espino Prints
Attachments: 161115 Ltr - David H.pdf
Hi David,
Regarding Item 1: See attached letter.
Regarding Item2: While the ultimate wind speeds of Figure R301.2(4)A are increased to 115 mph, the actual
design wind pressures change very little. Compare Table R301.2(2) of the 2015 code with the same table of the 2012
code. Pressures listed for the 90 mph wind speed in the 2012 code are essentially the same as those listed for the 115
mph wind speed in the 2015 code. When the codes increased the design wind speeds, they simultaneously changed the
wind pressure calculation to effectively negate the wind speed increase. In 2012 the code used 1.0*V*V to calculate the
pressure. In 2015 the code uses 0.6*V*V.
Thanks,
Vance King,
CIVCO Engineering, Inc.
PO Box 1758
Vernal, UT 84078
435-789-5448
From: Holland, David[mailto:David.Holland@ClaytonHomes.com]
Sent: Tuesday, November 15, 2016 1:53 PM
To: vanceking@civcoengineering.com
Cc: dargo@garfield-county.com
Subject: Fw: Dry Hollow Ranch, Lot 1 - Permit #BPMF -10-16-4469 Espino Prints
Vance can you please respond to David Argo with Garfield County Building department in regards to the 2 I
item in the email below, his email is cc'ed to this body please make sure to cc me with you response to David
Argo.
Thanks
David J. Holland
67123 Road
Grand Junction, CO 891505
david.holland@clavtonhomes.com
www.ClaytomHomesGrandJunction.com
Cell: (970)778.2843
P.H. (970)245.9039
Fax: (970)245.5475
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