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I have some more information regarding the site. to answer emmgjld, the location is near the downtown area, which is the Ancient Foundatin Creek formation. The density of the sands ranges from 108-134 pcf. All of those test results are in the upper 20 feet, since the caving of the sands limited...

The gravels are fairly coarse, up to 2 inches were recovered. However, the investigative drilling was performed with a 4-inch diameter, which limited the amount of recovery due to the caving nature of the sands. We have not received the information from the structural engineers yet, so the...

I have a project that is for development of a 13-story multi-family structure in Colorado Springs. The soils beneath the are silty sands with gravel to 70 feet over claystone bedrock. We are considering all options for foundation design, however, most of the options end with large diameter...