HomeMy WebLinkAboutObservation of Excavation 09.16.245020 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 (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
September 16, 2024
Janckila Construction
Attn: Vaughn Janckila
75 Buckskin Drive
Carbondale, Colorado 81623
vaughnj@janckilaconstruction.com
Project No. 24-7-269.A
Subject: Observation of Excavation, Proposed Residence, Lots 2 and 3, Hunt Ranch,
County Road 102, Garfield County, Colorado
Gentlemen:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on September 9, 2024, 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 June 26, 2024, Project No. 24-7-269. The current
observation was performed in accordance with our agreement for professional services with
Janckila Construction dated September 5, 2024.
The proposed residence has been designed to be supported on spread footings sized for the
recommended allowable bearing pressure of 1,500 psf with a risk of settlement.
At the time of our visit to the site, the foundation excavation had been cut in two levels from
about 1 to 6 feet below the adjacent ground surface with a step of about 3½ feet between levels.
The soils exposed in the bottom of the excavation consisted of slightly porous and calcareous,
sandy silty clay. Results of swell-consolidation testing performed on samples 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.
Kumar & Associates