IBC Chapter 18 and ASCE 7-22 set the baseline, but pile foundation design in Casper Wyoming demands more than just code compliance. The city sits at 5,150 feet on a high plains terrace where the Cretaceous shale and claystone bedrock weathers into moderately expansive soils. Seasonal moisture swings here open cracks in slab-on-grade homes every spring. We see it constantly. Deep foundations bypass that active zone entirely. Bearing loads transfer down to competent shale or sandstone, often between 25 and 45 feet. Wind governs lateral design on almost every project east of the Casper Arch. The ASCE 7 wind speeds for this region push past 115 mph ultimate, so pile groups and single deep elements need real moment resistance. A well-planned CPT test ahead of design gives continuous tip resistance and sleeve friction data through the weathered overburden, which is far more useful here than split-spoon blow counts alone.
In Casper's high plains, pile foundation design isn't just about bearing capacity — it's about controlling lateral drift under 115 mph winds and isolating structures from expansive near-surface claystone.
