Mark would like to make a beam by attaching it to pieces of pine pressure-treated wood and steel portions, as shown below, with 5/8 bolts. I went to the website "the engineering toolbox" and found the modulus of elasticity for the wood to be between 8.5-13.7 GPa. I will be using 10.5. Using the same website, I found the modulus of elasticity for steel to be 200 GPa. For my model, I need to determine the average shearing stress in the bolts and the shear stress at the center of the cross-section based on a vertical shearing of 5.2 KN also determine the spacing of the bolts. 88.9 mm 50.8 mm 88.9 mm 6.5 mm 101.6 mm 6.5 mm