HomeMy WebLinkAboutOpen Hole Soils Report 04.11.2017Uilc'rt; lrelol $chUll¿ .-
76 Comanchero Trail
New Castle, CO B'1647
ENGINEFRING
76 Gomanchero Trail - Open Hole
Job No: 17-6524
tate: APril 11 ,2017
General Gomments
As scheduled, a representative arrived on-site to perform the below discussed services and we have
the following comments.
*-OPEN HOLE*"
The exposed materials at the base of the excavation for the south side addition foundation footings and pad footings on the east
ancl west sides of the existing structure were observed. At bottom of footing elevation, the exposed materials appeared io be
comprised of primarily silty/clayey sands and gravels that were generally consistent with our experience of the anticipated
conditions in th¡s area. JJJ Construction utilized a mini-excavator and shovels to expose the undisturbed native material in the
foundation excavations, and a vibratory plate tamper was used to recornpact the foundation subgrade surface prior to form
placement. No project geotechnical report has been prepared for this site, but plans call for an assumed soil bearing pressure of
1,500 psi. Quantitatively verifying bear¡ng capacity generally requires access to subsurface and Standard Penetration Test data.
Bâsed on the limited amouni of available subsurface data, the observed soils are deemed to be l¡kely capab¡e of providing ân
allowable bearing pressure of 1,500 psf, however, the possibility oT the presence of weak subsudace materials resulting in
allowable beâring capac¡t¡es less than 1,500 psf cannot be ruled out from surface observations only. ln the event that
quantitative verification of allowable bearing capacity is necessary, drilling and sampling should be peformed.
Steven Beaulieu and Heid¡ Schultz (owners) were immediately notified of today's observations
Field Representätive: Shane Sorensen / Chris Hutto
Englewood, Commerce City, Loveland, Granby, Gypsum