eFunda

eFunda combines engineering references, material data and calculators. Its simply supported uniform-load beam page takes span, line load, Young's modulus, extreme-fiber distance and area moment of inertia, each with unit selectors. Outputs include displacement, slope, moment, shear and maximum stress magnitude; that positive stress value does not identify tension or compression. The linked theory is Euler–Bernoulli, with a simplification when stiffness properties do not vary along the beam. Paid membership adds unlimited content and symbolic/numerical webMathematica tools; the monthly option recurs until cancelled, and Professional Plus lists an ad-free content-print mode.