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What is Geotechnical Engineering? correct answers The branch of Civil Engineering that deals with soil, rock and underground water and their relation to the design, construction and operation of engineering projects. Issues Covered by Geotechnical Engineers correct answers What are the soils/rocks in the subsurface? Can the soil support the proposed project? Ground water impacts on project Impact of excavation, gradation and filling? Are natural earth slopes stable? Geotechnical Engineering Design Process correct answers Exploration Soil classification and Characterization Analytical tools Foundation design Construction monitoring where does igneous rocks come from and list its two cooling methods correct answers Come from Magma Intrusive- Slow cooling Granite made of feldspar and quartz Diorite- less quartz than Granite Extrusive- Quick cooling Basalt- very hard for tunneling. Andesite- very hard Rhyolite- extrusive equivalent to Granite name the two types of sedimentary rocks and their properties correct answers Clastic Rocks- Form in deep layers under pressure and moisture cementation. Coarse and medium grained- good properties Fine- Problematic slide on bedding plane Carbonates Form from Organic calcite from marine organic material Limestone Chalk- softer than Limestone Dolomite- similar to limestone but based on mineral dolomite Metamorphic Rocks correct answers Igneous and Sedimentary rock subject to