312000a 2010 Phase 2 Geotech Investigation.pdf

This is a geotechnical exploration report prepared by GSE Engineering & Consulting, Inc. for AKEA, Inc. dated August 2010 regarding Phase 2 of a parking garage project at the Veterans Administration Hospital in Gainesville, Alachua County, Florida.

The report details subsurface soil conditions and provides foundation recommendations for a proposed parking structure with a footprint of 126 by 282 feet, consisting of a ground level plus four supported levels. Key findings indicate variable soil conditions across the site, with 2.5 to 4 feet of sand with silt overlying layers of clayey sand and clay to depths of 60-75 feet. Due to the soil conditions and anticipated structural loads (including maximum interior column loads of 1,850 kips), the report recommends using augured cast-in-place concrete piles with a minimum 16-inch diameter to a depth of 65 feet, providing an allowable axial capacity of 150 tons. The report includes detailed boring logs from six test locations, laboratory soil analysis results, and specific recommendations for site preparation, dewatering, and construction methods to address the expansive clay soils encountered at the site.