clear //Given M = 10 //KN-m moment v = 8.0 //KN - shear Stress stress_allow = 8 //MPa - The maximum allowable stress shear_allow_per = 1.4 //MPa - The allowable stress perpendicular to grain stress_allow_shear = 0.7 //MPa - The maximum allowable shear stress //calculations S = M*(10**6)/stress_allow //mm3 //lets arbitarly assume h = 2b //S = b*(h**2)/6 h = (1.25*(10**6)*12)**(1/3) //The depth of the beam b = h/2 //mm The width of the beam A = 140*240 //sq.mm The area of the crossection , assumption stress_shear = 3*v*(10**3)/(2*A) //MPa The strear stress if stress_shear