wisconsin department of transportation geotechnical manual chapter 7 structures section 4 subsurface investigations all structures the purpose of a geotechnical investigation is to provide subsurface information use to develop the ...
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...Wisconsin department of transportation geotechnical manual chapter structures section subsurface investigations all the purpose a investigation is to provide information use develop plan documents and recommendations for construction structure at reasonable cost versus short long term performance this often requires engineer work closely with structural design some main types that needs are depth extent thickness each soil or rock stratum texture color mottling moisture content type conditions characteristics in situ field tests determine parameters spt pocket penetration vane shear cone etc laboratory samples determining density unconfined compression grain size analysis consolidation triaxial corrosion water levels loss during drilling artesians presence cobbles boulders utilities any other relevant there many guidelines apply globally various as outlined below pertinent individual will be presented later sections focused on those project should have unique site variances not allow s...