SUPERVISOR SOIL COMPACTION SUPERVISOR SOIL COMPACTION SUPERVISOR (SCS) If ever there was a need for a “fresh approach,” it is in the area of small excavation reinstatement. Municipalities are frustrated with pavement failure over and around utility excavations. Utilities decry the high cost of complying with backfilling specifications that vary from municipality to municipality. Research efforts directed to improving the reinstatement process have failed to result in a cost effective, uniform approach to the problem. process. The SCS determines when continuing compaction activity has reached...

ELIMINATES GUESS WORK IN SOIL COMPACTION ! Viewing the SCS simply as a QC instrument points to further savings. Testing cost is low on a per excavation basis. The SCS does not interrupt the backfill process. The SCS’s seismic approach is not tied to time consuming laboratory soil analysis and instrument calibration. Very importantly, SCS results are not skewed by proximity of buried utilities and trench walls – the usual operating environment in small excavations. ! PRACTICALITY: Because the SCS triggers termination of the compaction effort, SCS testing is completed before end result testing...

S U P E R V I S O R PROTOCOL: The SCS is used in conjunction with the following protocol: ! lifts not to exceed 12 inches ! hand test for adequate moisture in granular soils. Use a hydrometer to determine if soil moisture is conducive to effective compaction of cohesive materials ! the compaction effort must be continued until the pass in which the SCS gave the stop signal is completed to continue their compaction effort until the best possible result is achieved for the full depth of the lift. While we cannot guarantee that overly deep lifts will be compacted adequately, the probabilities of...