Geotechnical and Pavement Explorations Sample Clauses

Geotechnical and Pavement Explorations. Concrete pavement design for roundabouts will be designed in accordance with the 2018 ODOT Geotechnical Design Manual. All field explorations shall be performed in conformance with the approved ETWP developed in Task 7.2. We will coordinate subcontractors, such as drillers, to provide exploration services for geotechnical explorations. Perform subsurface explorations to estimate and characterize the in-situ soils and rock for the purposes of addressing foundation support and other geotechnical or geological considerations for the following: • Retaining wall foundations and lateral earth pressures • Concrete Pavement design for roundabouts • Test Pit and Existing Drywell Infiltration testing result summary Use data from the subsurface explorations to provide soil bearing information to support the anticipated structures and improvements. The anticipated subsurface explorations to be performed for the Project are shown in the following table: Drilled Borings for retaining wall foundations 2 Up to 25 feet with rock coring Test Pits for subgrade sampling 4 Up to 10 feet or excavator refusal Dynamic Cone Penetration (DCP) Tests 4 Up to 2.5 feet PIT Infiltration Tests 2 1 to 5 feet depending on anticipated elevation of bottom of infiltration facility Pavement Cores 5 Through pavement section on Xxxxxx Existing drywell tests (COSM 4B) 2 Test 2 existing City of Bend drywells Provide an experienced engineer or geologist to supervise the field operations for in situ data gathering. Disturbed soil samples shall be collected in the borings at 2.5 to 5-foot increments using a split-spoon sampler in conjunction with Standard Penetration Testing. Each of the borings may include up to 25 feet of rock coring. Rock coring shall be accomplished using HQ-sized equipment. All field work will be observed and recorded by qualified geotechnical staff. Upon completion of drilling, the boreholes must be abandoned and backfilled according to Oregon Water Resources Department regulations. Patches will be placed at the surface for exploration locations which are performed in paved areas. Patches will be cold patch asphalt. Borings will be advanced using hollow stem drilling and HQ wire-line coring techniques. The team shall assume that the site soils are not contaminated and are non-hazardous, and shall dispose of the drill cuttings from the site. All drilling must be done during daylight hours with no limitation on length of work day. The pavement field investigation program will inc...
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