The Benkelman Beam is a widely used, portable device in civil engineering for evaluating the structural integrity of flexible pavements (such as asphalt roads) by measuring deflection under simulated traffic loads. Developed in the 1950s during the Western Association of State Highway Organizations (WASHO) Road Test, it operates on a simple lever-arm principle to quantify how much the pavement rebounds after a load is applied and removed. This helps assess pavement strength, identify weak spots, and inform maintenance or rehabilitation decisions…