GPS/GNSS Soil Survey Construction Testing

Classic 4.5 Kg Hammer: Model Type CIST/882

Simple Tool for Checking Trench Re-instatement & Soil Strength

The Clegg Impact Soil Tester type CIST/882 manufactured by SD Instrumentation (SDi) provides a means for measuring and controlling soil strength and consolidation levels during trench reinstatement. It is also used to confirm uniform compaction over wide areas of ground, identifying poorly compacted areas and ineffective rolling of materials. A special lightweight version of the Tester is also available for checking sports turfs whilst a heavy duty version is supplied for testing harder materials and roadworks.

The New Roads and Street Works Act 1991 sets out a Specification for the Reinstatement of Openings in Highways, creating the need for a tool to check the performance of trench filling operations and compaction levels of materials, and imposing penalties on undertakers who fail to meet the specified standards. The Clegg Impact Soil Tester provides a compact and reliable instrument for monitoring and controlling the quality of reinstatements while the work is in progress, avoiding the need for re-excavation should later tests reveal poor workmanship.

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