For the beam and loading shown, if d= 250 mm, detemine: (a) The magnitude of the normal stress due to bending at x 2.5 m from point 4, (b) The magnitude of the maximum normal stress due to bending. la| (@ 2.5 m) MPa l0| (max) = MPa 15 kN 80 kN/m 110 mm 25 kN-m 22 kN-m 2.8 m 3.2 m

3) Graphically trace the area which contributes to the load for each joint of the middle parallel chord truss shown on the plan from a distributed area load. Also complete the free body diagram for the section shown for the truss on the bottom figure (with loads) with the appropriate directions (senses). 0.5P (3) 3 P

x=-2-5-6/2m