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Benkelman Beam is a simple lever-arm device that measures the deflection of flexible pavements under the action of moving wheel loads.
The probe beam, supported by a rigid reference beam, measures deflections using its 2.44m (8ft) probe end and a dial indicator at the end of the fulcrum. Deflections measured on a dial indicator are doubled to obtain total pavement deflection. The probe beam is placed between the tires of a test vehicle and deflection is measured as the vehicle passes over the test area.
The reference beam has a leveling adjustment to zero the dial indicator. A switchable battery-operated vibrator alerts the operator and assures the free movement of beam parts during measurements.
The three-piece, anodized, lightweight aluminum beam is 33lb (15kg) net weight for easy portability, and the longest piece is 6.5ft (1.99m). Dial Indicators must be ordered separately.
Main Body: 55in (1,397mm) Length
Probe Beam: 96in (2,438mm) Length, telescopes into case for storage
Open Length: 144in (3,658mm)
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