ICC Soils Questions with 100% Verified Correct Answers 2026

ICC Soils Questions with 100% Verified Correct Answers 2026 The strength of a soil, or the ability to compact a soil into a suitable construction material will depend on? - Correct Answer Soil type Soil density The amount of water in the soil Types of soils - Correct 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) - Correct Answer Have a large componet of dead or decaying plants, and are not used in construction Silt and Clay - Correct Answer Classified based on whether the soil is plastic or non-plastic (eg. can you roll it into a ball) Gravel and Sand - Correct 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 - Correct 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 - Correct Answer Cohesion (clay only) Friction (when individual soil grains move across on another) Soil fail by - Correct Answer shear