HomeMy WebLinkAboutObservation of ExcavationClient: Chris Lehrman
SGM, Inc.
BROUND Glenwood Springs, CO 8160100
ENGINEERING
Garage/ Shop Addition 161 Van Dorn Drive
Report Date: Oct 24, 2024 Work Order No.: 24-6618.Excavation-OpenHole.0001; ver:
Work Order Date: Oct 24, 2024 Reviewed By:
Excavation Contractor: NIA Performed by: Chris Hutto
Location: Garage/shop addition foundation GL A-011-3
Geotechnical Report
Geotechnical Engineer: NIA Report Date: N/A Report No.: NIA
Anticipated Condition: Native Undisturbed
Special Considerations: No geotechnical report has been prepared for this area. Project structural drawings indicate design based on an assumed
maximum allowable bearing pressure of 1,500 psf.
Encountered Conditions
,Excavation Condition: We observed the excavation for the proposed spread footing as located in the photo below, and found dense silty clays with
sand with intermittent gravel and cobbles. Based upon our experience and on the IBC presumed soil load bearing pressures
in Table 1806.2, this soil type at the elevations and time of our observations, likely meets or exceeds the presumed allowable
bearing pressures used in the design. However, the presence of weaker subsurface soil layers resulting in allowable bearing
pressures of less than 1,500 psf cannot be ruled out by surface observations only. Quantitatively verifying soil bearing
capacity generally requires access to subsurface information and Standard Penetration test data. If this is desired, we
recommend drilling and data collection be performed.
Conformance
Conforms
Excavation Conditions: 2
Name
Chris Lehrman
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Area represented
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Does Not Conform
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10/24/2024
01-/6NAt
Not Applicable
Company
SGM, Inc.
Not Observed
AM NW corner and cut wall
Results apply only to the specific items and locations referenced and at the time of testing, observations or special inspections. This report should not
be reproduced, except in full, without the written permission of GROUND Engineering Consultants, Inc.
4? Inverness Drive East, Englewood, Colorado www.groundeng.com 343-289-1989
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