HomeMy WebLinkAboutObservation of SiteI $rl *iffilf'#frfl*ifd -.'.
5020 CountY Road 154
Glenwood SPrings, CO 81601
phone: (970) 945-7988
email : kaglenwood@kurnarusa.com
www.kumarusa"com
An E nployta Oqrfi;d ComPcnY
Office Locations: Denver (HQ), Parkel eaiorado $prings, Fort Collins, Gienwood Springs'and Summit County, Colorado
June 3, 2025
Adam Sahnow
14913 Highway 82
Carbondale, Colorado 81623
ad a m sa hllow(O va h oo. com
Subject Observation of Site
CountY, Colorado
Dear Adam:
As requested, a representative of Kumar & Associates observed the subject site on May 30' 2025
for possible foundation support. The findings of our observations and recommendations for the
foundation support are presented in this report. The services were performed in accordance with
our agreement for professional engineering services to you dated May 30, 2025-
The site is occupied by two existing residences. The proposed 4Q'by 48'shop will be located in
the northwest part of the property and the 24' by 36' shed will be located in the northeast part of
the property. The buildings will be one story with a slab-on-grade floor.
Based on our experience in the area, we expect that relatively dense gravel soils will be
encountered within 3 feet of the ground surface. Spread footings placed on the undisturbed
natural soil designed for an allowable soil bearing pressure of 2,500 psf can be assumed for
support of the proposed buildings. Footings should be a minimum width of 16 inches for
continuous walls and 2 feet for columns. We should observe the completed foundation excavation
for each building prior to forming footings. Exterior footings should be provided with adequate
soil cover above their bearing elevations for frost protection (36 inches). Continuous foundation
walls should be reinforced top and bottom to span local anomalies such as by assuming an
unsupported length of at least 10 feet. Structuralfill placed within floor slab areas can consist of
the on-site granular soils or a suitable imported gravel such as 3/e-inch road base, compacted to
at least g5olo of standard Proctor density at a moisture content near optimum. Backfill placed
around the structure should be compacted and the surface graded to prevent ponding within at
least 5 feet of the building.
The recommendations submitted in this letter are based on our experience in the area and do not
include subsurface exploration to evaluate the subsurface conditions within the loaded depth of
foundation influence. The risk of foundation movement may be greater than indicated in this
report because of possible variations in the subsurface conditions. Our services do not include
determining the presence, prevention or possibility of mold or other biological contaminants
(MOBC) developing in the future. lf the client is concerned about MOBC, then a professional in
this specialfield of practice should be consulted.
el"ry
25-7-390
Garfield
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