HomeMy WebLinkAboutObservation of Excavation 06.28.2023I (Îrt ii.rilfi'tr:lfffiin'rnË;'
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An Employcc Ownad Compony
5020 County Road 154
Glenwood Springs, CO 81601
phone: (970)945-7988
fax: (970) 945-8454
email: kaglenwood@kumarusa.com
www.kumarusa.com
Office Locations: Denver (IIQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
Iune28,2023
Pauli Hayes Enterprises, LLC
Attn: Pauli Hayes
480 Pinon Point
Glenwood Springs, CO 81601
Hayes.pauli@gmail.com
Project No. 1 8-7-554.01
Subject:Observation of Excavation, Proposed Garage Addition, Zonakis Residence, Lot 1,
Block 8, Los Amigos Ranch, 2077 Elk Springs Drive, Garfield County, Colorado
Gentlemen:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on June 14, 202s3 to evaluate the soils exposed for foundation support. The findings
of our observations and recommendations for the foundation design are presented in this report.
We previously conducted a subsoil study for design of foundations at the site and presented our
findings in a report dated October 11,2018, Project No. l8-7-554.
We nnderstand the proposed garage addition has been designed to be founded on spread footings
bearing on the natural soils and sized for an allowable bearing pressure of 1,500 psf.
At the time of our visit to the site, the foundation excavation had been cut in 2 levels ftom3Yzto
5 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation
consisted of stifl, silty sandy clay. Results of swell-consolidation testing performed on a sample
taken from the site, shown on Figure 1, indicate the soils are slightly compressible under
conditions of loading and wetting. No free water was encountered in the excavation and the soils
were slightly moist to moist.
The soil conditions exposed in the excavation are consistent with those previously encountered
on the site and suitable for support of spread footings designed for the recommended allowable
bearing pressure of 1,500 psf. Loose and disturbed soils should be removed in the footing areas
SAMPLE OF: Sondy Silt ond Cloy
FROM: North Sldo of Bottom of Excovotlon
WC = 20.7 %, DD = 91 pcf
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Kumar & Associates SWELL-CONSOLIDATION TEST RESULTS Fig. 118-7-554.01
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