... different plate diameters at different depths 3.2 FIELD TESTS FOR HYDRAULIC STRUCTURES In addition to the standard penetration resistance test and in-place density test for hydraulic structures, such ... as dams and canals, the field permeability test and the vane test are often performed It is understood that for major dam projects, elaborate testing should be performed before and during construction ... should include: Texture of surficial deposits Structure of bedrock, including dip and strike, faults or fissures, stratification, porosity and permeability, schistosity, and weathered zones Area...