HomeMy WebLinkAboutObservation of Excavation'V � Kumar &Associates, Inc
Geotechnical and Materials Engineers 5020 County Road 154
and Environmental Scientists Glenwood Springs, CO 81601
_. phone: (970) 945-7988
fax: (970) 945-8454
email: kaglenwood@kumawsa.Com
An Employee Owned Company www.kumarusa.com
Office Locations: Denver (HQ), Parker, Colorado Springs, Fort Collins, Glenwood Springs, and Summit County, Colorado
November 11, 2021
McSwain Builders
Attn: Frank McSwain
658 Euclid Avenue
Carbondale, Colorado 81623
frank(u)rncswainbuilders.com
Project No. 21-7-865
Subject: Observation of Excavation, Proposed New Deck Supports, 52 Midland Point
Road, Lot M-13, Midland Point, Garfield County, Colorado
Dear Frank:
As requested, the undersigned representative of Kumar & Associates, Inc. observed the
excavation at the subject site on November 10, 2021 to evaluate the soils exposed for foundation
support. The findings of our observations and recommendations for the foundation design are
presented in this report. H -P Geotech previously observed the excavation for the existing house
at the site and presented their findings in a report dated June 23, 2004, Job No. 104 466.
The previous deck on the back (east) side of the house had been removed and will be rebuilt with
new foundation supports off the northeast corner of the house. The two new pads and "pony
wall" were in place.
At the time of our visit to the site, the foundation excavation had been cut in one level about 3%2
below the adjacent ground surface. The soils exposed in the bottom of the excavation consisted
of medium dense, silty, sandy gravel with cobbles and small boulders. No free water was
encountered in the excavation and the soils were 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 2,000 psf.
McSwain Builders
November 11, 2021
Page 2
The recommendations submitted in this letter are based on our observation of the soils exposed
within the foundation excavation. Variations in the subsurface conditions below the excavation
could increase the risk of foundation movement. We should be advised of any variations
encountered in the excavation conditions for possible changes to recommendations contained in
this letter.
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar & Associates, Inc.
Daniel E. R
DEH/
cc: Evolve Structural — Steve Edmiston steve a evolvestruct.com
Kumar & Associates, Inc. Project No. 21-7.865