A simply-supported 6x12 sawn lumber beam is subjected to uniform dead and live loads. wD=600 lb/ft, wL=700 lb/ft 18 ft Section 6x12 1. Determine the maximum bending moment, MD (lb-ft), due to dead load. 2. Determine the maximum bending moment, ML (lb-ft), due to live load. 3. Determine the required bending strength, Ma (lb-ft), from the controlling ASD load combination. 4. Report the section modulus, Sxx (in3), for the 6x12 section. 5. Determine the ASD required bending stress, fb (psi). Answer: fb=5210 psi 6. Determine the maximum shear, VD (lb), due to dead load. 7. Determine the maximum shear, VL (lb), due to live load. 8. Determine the required shear strength, Va (lb), from the controlling ASD load combi- nation. 9. Report the section area, A (in2), for the 6x12 section. 10. Determine the ASD required shear stress, fv, (psi). Answer: fv=277 psi