H2R Corp provided general geotechnical field services for a soil plug being constructed by Malcolm Drilling, supporting mix designs, performed drilling services and wireline coring of the low strength material, rebar inspections, soil mix wet grab sampling, laboratory testing, and other geotechnical analysis in support of the excavation.
The geotechnical team at H2R Corp (formerly a part of Gannett Fleming, Inc.) provided the geotechnical design and engineering, construction inspection for driven piles and drilled shaft foundations, construction materials testing, MSE wall geotechnical evaluations, and shallow foundation design for maintenance facilities.
H2R Corp, at the time known as Gannett Fleming, provided general geotechnical field services for a soil plug being constructed by Hayward Baker and HJ Foundation, performed drilling services and wireline coring of the low strength soil plug materials, and supported efforts for laboratory testing. In addition, geophysical methods were employed to locate unknown foundations from previous structures.
During the sizable preconstruction condition survey, H2R documented the condition of residential and commercial structures, walkways, driveways, and other features that are visible from the exterior. This included photographic and video graphic documentation, vibration monitoring, and crack surveys. The monitoring program was developed with baseline noise and vibration levels, with studies to define vibration attenuation over distance to further protect the Owner at the areas of interest.
H2R Corp provided geotechnical engineering, drilling, design, drilled shaft inspection, cross-hole sonic logging, and materials testing during the construction. Performed SPT borings and rock coring to 150' below water level, designed 60" and 36" diameter drilled shafts that were constructed to approximately 110' below grade for both the Northbound and Southbound SR699 bridges Madeira Beach and Treasure Island.
H2R's scope included bench scale testing, low strength unconfined compressive strength testing, verification core drilling of low-strength material and associated strength testing, as well as other conventional quality control on-site inspections and laboratory tests.
H2R Corp. provided specialty construction support services to this client. The subsurface elements were critical for the stability of the impoundment and remediation areas. The quality of H2R’s work was key to ensure that the as-built condition met stringent contract requirements.
Williams Earth Sciences, now known as H2R Corp, as a subcontractor to Bauer Foundation, the prime contractor, was contracted to provide the full range of QC services including cutoff wall logging, field sampling and laboratory testing of the excavated soils and the soil-cement mix and the Verification Borings, with Borehole Logger for acceptance of the wall.
H2R Corp, part of Gannett Fleming at the time, provided general geotechnical field services for a soil plug being constructed by Malcolm Drilling. This included the support of mix designs, drilling services and wireline coring of the low strength material, rebar inspections, soil mix wet grab sampling, laboratory testing, and other geotechnical analysis in support of the excavation including slope stability and settlement analyses, as well as slope inclinometer measurements.
H2R provided soil cement design support services for the deep soil mixing to Nicholson Construction. Tasks for this phase of work includes specialty geotechnical engineering and field services including soil-cement coring, laboratory testing, and other services including construction quality control, downhole camera services, and in-situ permeability testing.