Prepare 3 graphs and a table showing how the maximum shear stress, bending stress and deflection change ( at 1/2 foot incriments) as a truck (each wheel carries 1 kip 7 ft apart) passes over a bridge supported by two 15ft 4x12 red oak air dried beams. Determine if the bridge would fail under a given load. The truck has two axles and the graph should should begin with 1 axle 7 ft into bridge with the other just reaching the bridge.