47PD0224R0048 Terracon geotech report - Clarksburg CH - 2020-09-15.pdf

This document is a Geotechnical Engineering Report for the proposed Old Courthouse Renovation - Phase I project located in Clarksburg, West Virginia. The report provides findings from the subsurface exploration and geotechnical engineering recommendations concerning earthwork, shallow foundations, micropile foundations, floor slabs, lateral earth pressures, and seismic considerations for the renovation.

Key details include:

• Two test borings were drilled to depths of 20.7 and 30 feet below ground surface. Subsurface conditions consist of existing fill, residual soils, weathered rock, and bedrock of the Conemaugh and Monongahela Groups.
• Recommendations are provided for shallow foundations with a maximum net allowable bearing pressure of 500 psf, and micropile foundations with allowable compression and uplift capacities.
• Lateral capacity analyses were performed for the micropile foundations, indicating allowable lateral loads up to 9.5 kips for 0.5-inch deflection.
• The site is classified as Seismic Site Class C per the International Building Code.
• Specific construction considerations are provided for earthwork, floor slabs, and lateral earth pressures.