Benkelman Beam Apparatus - Black Aluminum, 8ft Probe Beam, Telescopes For Storage | Bitumen Testing Instruments, Measures Surface Deflection Under Standard Load

Benkelman Beam Apparatus

Benkelman beam is a very simple apparatus and it is commonly used for measuring the surface deflection of a pavement under standard loading conditions. A schematic arrangement of the Benkelman beam (Refer Slide Time: 11:11). It is cut at several places because its full length cannot be shown in sketch. This is the probe point which would be resting on a pavement surface at a point at which we are trying to measure the deflection. As you can see here since it is very long its extended portion is connected here by nuts and bolts so it can be dismantled and then for ease of carrying and other convenience it can be carried in two different parts but when we actually use it for deflection measurement we will connect them together so the full length of the beam is going to be attained.

Technical Specification

Main Body: 55 (1397 mm) long, black aluminum finish
Probe Beam: Aluminum, 8ft. (2.4 m) long, telescopes into case for storage
Probe Fulcrum: Ball pivot bearing, gives lever ratio of 2:1
Vibrator System: Operating switch mounted on top of instrument section (requires 4 D "size batteries, supplied)
Indicators: (not included)
Leveling Wheel: Adjust beams to proper elevation
Length of the probe arm from pivot to probe point 244cm
Length of measurement arm from pivot to dial 122 cm
Distance form pivot to front legs 25cm
Distance from pivot to rear legs 166cm and
Lateral spacing of front support legs 33cm

Accessories

Wooden carrying case
Spare gauge with bracket
Adjustable feet for Benkelman beam, complete with two spirit level
Dial Gauge : 0.01 x 25m