William T. Gentry III, P.E.

Mr. Gentry’s experience includes project cost estimating, proposal preparation, scheduling, training and supervision of staff engineers, field and laboratory technicians and drillers.   His geotechnical engineering design experience includes drilling, standard penetration, Shelby tube sampling, rock coring, piezometer installation and monitoring, laboratory assignment and testing on geotechnical soil and rock samples, data evaluation, design of deep foundation (driven piles, geopiers, helical piers, drilled shafts, auger cast-in-place piles and micropiles) and shallow foundation systems for single- and multi-story buildings, above ground storage tanks, communication towers and industrial projects, settlement estimates for shallow and deep foundations, earth pressure calculations for design of retaining walls and anchor blocks, design of flexible and rigid pavements including overlays and preparation and monitoring of pre-loading programs and settlement plates for above ground storage tanks and project sites overlying deep soft soil and organic soil profiles.

Mr. Gentry has evaluated the stability of native soil and rock slopes including fill and cut slope conditions for building pads and roadways. The evaluation has included visual observations, field exploration, laboratory testing, slope stability analysis and recommendations for re-construction or repair if found necessary. The recommendations for repair of slopes typically include flattening the slope, reinforcing the slope with soil nails, TECCO mesh or geogrids as a reconstructed slope or wall.  Mr. Gentry has also prepared slope and wall design plans and specifications for MSE segmental block walls, geogrid reinforced soil slopes and soil nail walls.

In addition, he has performed, evaluated and recommended infiltration/percolation rates for the design of storm water infiltration ponds.  He has experience in evaluating sinkhole and mine subsidence potential of sites based on geology, topography, soil and bedrock type, ground water, public records and past occurrences.  He has evaluated geophysical surveys and directed subsurface exploration programs to determine horizontal and vertical extent of sinkholes and mines and recommended grouting programs for remediation.

Mr. Gentry’s construction materials testing experience includes quality control testing and inspection during construction of commercial, municipal, residential, industrial and military projects.  This experience includes testing, inspection and monitoring of proof-roll operation, undercutting activities, geotextile and geogrid placement inspection, density control of fill, utility backfill, pre-loading sites, settlement plate monitoring, shallow and deep foundations, reinforcing steel, concrete placement, floor flatness, concrete imaging radar, fire-proofing materials, vibration monitoring of structures and ground, soil resistivity, pressure meter, refraction seismic, and slope inclinometer.

He has experience in the design, implementation and monitoring of subsurface improvement programs. Such programs have included lime and lime-fly ash, lime and cement stabilization, vertical moisture barriers and pre-swelling of expansive clays, site pre-loading or surcharging and impact densification.

Mr. Gentry has evaluated the pavement condition of roadways to include visual pavement distress surveys, density and thickness measurements of the asphalt or concrete surface, density and thickness measurements of the aggregate base course, relative density or consistency of the subgrade soils, drainage concerns and comparison of actual pavement conditions versus the plans and specifications.  The evaluation has included recommendations for re-construction of new pavements, overlays and repairs.