Level One Supervision has become a standard requirement or at least a serious recommendation for all building development sites. Following the standard AS3798, ensures an earthworks site has been filled and compacted to a high standard under controlled conditions.

Such conditions include, fill is placed on firm ground, level and on natural ground. All non-certified fill is removed, and replace dor discarded with a material complying to AS3798 or as defined by an overseeing civil engineer.

Atterberg Limits cover a range of soil tests relating to reactivity to moisture (water), better known as Plasticity. These tests include Liquid Limit, Plastic Limit, Plasticity Index and Linear Shrinkage. Atterburg Limits play an important part when classifying soil types and work in conjunction with Particle Size Distribution tests (above).

Australian Standards: AS1289 3.1.1, 3.1.2, 3.2.1 AS1289 3.3.1, 3.4.1

Sieve analysis is designed to break down the soil particles into their individual fractions. This is necessary to the design of roadbase material.