HomeMy WebLinkAboutObservation of Excavation 09.16.2025Foundation Footings Excavation Bound By GL 1-4/A-N (See Attached)Location:
Performed by:
Comments:
Excavation Contractor:Grace LaytonTally Ho Construction
Name Company
On-Site Notifications
Jeff Parrington Tally Ho Construction
Geotechnical Report
Geotechnical Engineer:N/A Report Date:N/A
Anticipated Condition:Native Undisturbed
Special Considerations:No project 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 foundation footing, as located in the photo below, and found dense silty,
clayey material. 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 pressure used
in the design. However, the presence of weaker subsurface soil layers resulting in allowable bearing pressure 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
Excavation Conditions:
Conforms Does Not Conform Not Applicable Not Observed
Report No.:N/A
Photos
Highlighted = Area of observation Excavation observed.
Tally Ho Construction
111 E 3rd Street
Rifle, CO 81650
Jeff Parrington
Garco Premier Hangar - Rifle Airport
Client:
Excavation / Open Hole Observations
Work Order No.:Sep 16, 2025 25-6617.Excavation-OpenHole.0001; ver: 1Report Date:
Work Order Date:Sep 15, 2025 Reviewed By:Chris Hutto
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.
41 Inverness Drive East, Englewood, Colorado www.groundeng.com 303-289-1989
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