12N TAMMS – Earthworks/Surveying Practice Exam

The process of soil compaction is significantly influenced by moisture content, type of soil, and the method of compaction employed.

Moisture content is crucial because it affects soil behavior; too little moisture can lead to insufficient cohesion among soil particles, while too much can prevent proper compaction. Optimum moisture levels help in achieving the maximum dry density of the soil, which is essential for stability and support.

The type of soil also plays a fundamental role, as different soils (like clay, silt, sand, and gravel) have varying compaction properties. Cohesive soils, for instance, require different handling than granular soils, as their compaction behavior differs based on particle size, shape, and moisture retention characteristics.

The method of compaction, which includes techniques such as vibratory rolling, static loading, and tamping, directly impacts the efficiency of the process. Different methods are developed for specific soil types and project requirements, making it imperative to choose the most appropriate approach for effective compaction.

Understanding these factors aids in ensuring the desired density and strength of the compacted soil, making option B the most comprehensive response regarding the critical factors in soil compaction.