ICC (EC) Soils - Material Testing combined Questions With Verified Answers | UPDATED

ICC (EC) Soils - Material Testing combined Questions With Verified Answers | UPDATED The strength of a soil, or the ability to compact a soil into a suitable construction material will depend on? - ANSWER Soil type Soil density The amount of water in the soil Types of soils - ANSWER Gravel (mm to cm's in size) Sand (mm in size) Silt (fine particles with little cohesion) Clay (has cohesion, can stick together) Organic soils (peat, topsoil) Organic soils (O) - ANSWER Have a large componet of dead or decaying plants, and are not used in construction Silt and Clay - ANSWER Classified based on whether the soil is plastic or non-plastic (eg. can you roll it into a ball) Gravel and Sand - ANSWER are classified based on whether or not all the particle are roughly the same size(uniform, like a beach) or if there is large variety in particle size (well-graded) Soil layers - ANSWER 1. (complex zone) 3 to 4m 2. (glacio-lacustrine clay) 2-12m 3. Glacial till, up to 9m in thickness 4. Carbonate bedrock, the upper surface of which is often fractured, weathers and irrgular Soil has two componets of strength - ANSWER Cohesion (clay only) Friction (when individual soil grains move across on another) Soil fail by - ANSWER shear Soil strength is used to determine - ANSWER The bearing capacity of a foundation The stability of natural or man-made earth slopes or retaining walls Test for soil strength include; - ANSWER unconfined compression test direct shear test Triaxial compression Soil strength depends upon - ANSWER Density and moisture content Unconfined compression test - ANSWER useful for comparing strength of two soils or varion of strength with dept. Gradation refers to the range of measured