Extracted text: A uniformly distributed load, W1, is applied all throughout the length of the beam and a concentrated load P1 is located at the midspan of the beam. The maximum flexural stress of the wood used in the design of the beam is 20 MPa. Determine the minimum height "h" of the cross- section of the beam. P1, kN L1=L2, L3, m WI, |kN/m SET b, mm h, mm В 2.75 15 1.0 2.0 120 L1 1. L2 L3