FWD - D7

The falling weight deflectometer (FWD) is a non-destructive testing (NDT) device used to evaluate pavement structural condition. The FWD imparts a load of known magnitude to the pavement, and the resulting deflections of the pavement are measured.

D7

The D7 sensor measures the deflection at 1800 mm from the centre of the load plate. The SCI Average is the SCI values averaged over the length of a pavement segment and gives a good indication of the condition the subgrade layer.

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