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www.sgm-inc.com
GLENWOOD SPRINGS 118 West Sixth St, Suite 200 | Glenwood Springs, CO 81601 | 970.945.1004
Page | 1
January 27, 2022
Mr. Gary Mahaffey
4947 CR 309
Parachute, CO 81635
RE: Modular Home Updates
Dear Gary,
At your request, we have modified the drawings per our concurrence to reflect the Nudura insulated form system
for the foundation design of the modular home on your property in Rulison. You will find attached a revised cross
section that reflects the need to only have 1 number 4 rebar (horizontal) in the 36” stem wall that will be formed
of the Nudura (ICF) form system.
You will also note that the opening in the gable end wall foundation is shown in plan view that reflects that this
opening is to be 36”square and constructed of the same cross section as the remainder of the exterior foundation.
It is possible to pour the concrete footing as a full concrete pour instead of the 24” wide footing as well. We
understand that this may be the selected option of the contractor. When pouring this footing under the crawl
space access, our recommendation is to pour the footing/foundation first, then pour the remaining foundation
walls. After they are poured, a second stage pour in the crawl space walls can be completed.
Upon your receipt and review, if you have any questions, please don’t hesitate to contact me.
Respectfully,
SGM
Jefferey S. Simonson, PE
Principal
1/27/22