Assignment:
Two full-size 2x6 inch planks are connected as shown by lag screws to form a beam which is subject to a vertical shear of 400 lb. Knowing that the allowable shearing force is 360 lb in each lag screw, how to determine the largest permissible longitudinal spacing (s) of the lag screws, and the maximum shearing stress on the beam?
Provide complete and step by step solution for the question and show calculations and use formulas.