TAKE AWAY CAT 2.docx - HM-574 Benkelman Beam The HM-574 Benkelman Beam is a simple lever arm device which measures deflection of flexible pavements

TAKE AWAY CAT 2.docx - HM-574 Benkelman Beam The HM-574...

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HM-574 Benkelman Beam The HM-574 Benkelman Beam is a simple lever arm device which measures deflection of flexible pavements under the action of moving wheel loads. A probe beam is supported by a rigid reference beam such that deflections in its 2.44m (8ft) probe end are measured by a dial indicator 1.22m (4ft) on the other side of the fulcrum. Deflections measured on a dial indicator are therefore doubled to obtain 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 to beyond the end of the probe beam. The reference beam has a leveling adjustment to zero the dial indicator. A switchable battery-operated vibrator serves as a personnel alert and assures 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). Mechanical Dial Indicator MA-334 or Digital Dial Indicator MA-366 must be ordered separately. Est. Ship Wt.: 55lb (25kg) Benkelman Beam The Benkelman Beam measures the deflection of a flexible pavement under moving wheel loads. Extremely accurate and easy to use. Direct-reading dial indicator eliminates need for conversion tables or field calculations. Now you can get a horizontal-reading digital gauge for use with the H-3220A Benkelman Beam. No more laying on the ground to read a dial indicator. We've also redesigned the gauge cover on the beam, so that you can now store the new digital gauge mounted to the Benkelman Beam, speeding set up and keeping the gauge and beam together, eliminating the chance of forgetting the gauge. This pavement analysis tool provides the following features:n Precision accuracy Easy to use on test site Lightweight, quick set-up Easy to transport, easy to store No need for conversions or field calculations Telescoping design adds convenience, reduces weight, and saves storage space. Lightweight aluminum construction. Order gauge separately. AASHTO T256.
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A falling weight deflectometer , FWD, is a testing device used by civil engineers to evaluate the physical properties of pavement . FWD data is primarily used to estimate pavement structural capacity for 1) overlay design and 2) to determine if a pavement is being overloaded. Use includes (but is not limited to) highways, local roads, airport pavements, and railway tracks. The machine is usually contained within a trailer that can be either towed to a location by another vehicle or, when used on railway tracks, placed on a hand trolley and pushed to the location.
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