HomeMy WebLinkAboutObservation of Excavation 11.14.20202l(+rtffi'-"*
An Gmdoycc Orncd Compony
5020 County Road 154
Glenwood Springs, CO 81601
phone: (970)945-7988
fax: (970) 945-8454
email : kaglenwood@kumarusa.com
www.kumarusa.coln
Subject
Office l¡cations: Denver (HQ), Parker, Colorado Springs, Fort C.ollins, Glenwood Springs, and Summit Cornty, Colorado
November 14,2022
Daybreak Construction
Attn: Dana Yerian
P.O. Box 587
Glenwood Springs, Colorado 81602
davbreakconst@.hotmAil. com
Project No.22-7-406
Observation of Excavation, Proposed Residence, 3554 County Road 214, Silt,
Colorado
Dear Dana:
As requested, a representative of Kumar & Associates, Inc. observed the excavation at the
subject site on November 11,2022 to evaluate the soils exposed for foundation support. The
findings of our observations and recommendations for the foundation design are presented in this
report. These services were performed as supplementary to our services agreement to Daybreak
Construction dated June 1, 2A22. 'We previously conducted a subsoil study for design of
foundations at the site and presented our findings in a report dated July 7, 2022, Project No.
22-7-446.
The proposed residence will be a one-story wood frame structure over partial basement level and
partial structurally supported floor over crawlspace with a slab-on-grade garage.
At the time of our visit to the site, the foundation excavation had been cut in three levels from
LYz to 7Yz feet below the adjacent ground surface. The soils exposed in the bottom of the
excavation consisted of very clayey sand. No free water was encountered in the excavation and
the soils were slightly 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, disturbed soils should be removed in the footing areas to
expose the undisturbed natural soils. Other recommendations presented in our previous report
which are applicable should also be observed.
The recommendations submitted in this letter are based on our observation of the soils exposed
within the foundation excavation and the previous subsurface exploration at the site. 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. Our services do not include
determining the presenco, prevention or possibility of mold or othor biological contaminants
(MOBC) developing in the future. If the client is concerned about MOBC, then a professional in
this special field of practice should be consulted.
Daybreak Construction
November 14,2022
Page2
If you have any questions or need further assistance, please call our office.
Sincerely,
Kumar &
James H.
Reviewed by:
F I
Daniel E. Hardin, P.E
JHP/kac
Kumar & Assoclates, lnc. ô Pro¡ect No.22-7416