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What is Theory BBD about?

The Benkelman Beam Deflection technique (BBD) is used to measure surface deflection on flexible pavements for designing overlays to strengthen weak pavements. The procedure involves determining rebound deflection under a standard wheel load and requires consideration of temperature, moisture content, and subgrade soil properties. Key parameters include a slender beam length of 3.66 meters, a standard truck axle weight of 8170 kg, and specific testing conditions outlined in IRC-81-1997.

Author

RLB Consultants

Language

EN