8. A rigid bar AB is supported by three rods. A load P= 250 kN is applied to the bar. The modulus of elasticity of copper is 110 x 106 kN/m^2 and modulus of elasticity of steel is 200 x 10°6 kN/m^2. Steel rod Steel rod A- 900 A= 900 2m sq. mm sq. mm Copper A- 1200 sq. mm A 1m P Determine the deformation in the rods (in mm). * Your answer

Design a rectangular reinforced concrete beam for a simple span of 40 ft. Uniform service loads are 0.8 kip/ft dead load and 1.4 kips/ft live load. Use fc' = 4000 psi and fy = 60,000 psi. Sketch your design.

Two steel rods are welded together (see figure);the seam is oriented at angle θ = 50°. The stresses onthe rotated element are σ x1 = 10 ksi,  σy1 = -12 ksi,and τx1y1 = -5 ksi. Find the state of plane stress onthe element if it is rotated clockwise to align the x1axis with the longitudinal axis of the rods.