The beam in Figure has an internal hinge at the point B along the length of the beam. a) Discuss the stability of the beam b) Sketch the force diagram of the beam c) Calculate the values of the reactive forces d) Develop the shear force equation along each segment of the beam and plot the dimension force diagram on a graph paper e) Develop the bending moment equation along each segment of the beam and plot the dimen bending moment diagram on a graph paper 200 kN 20 kN/m ¦ a ! b A Ia 10 m B ¦ b 10 m 5 m Figure 1

Two line loads q1 and q2 of infinite lengths are acting on top of an elastic medium, as shown in Figure P8.6. Find the vertical stress increase at A.

For the beam shown: (a) determine the distance a for which the maximum positive and negative bending moments in the beam are equal; and (b) draw the corresponding shear and bending moment diagrams for the beam.

A beam is part of the framing system for the floor of an office building. The floor is subjected to both dead loads and live loads. The maximum moment caused by the service dead load is 45 ft-kips, and the maximum moment for the service live load is 63 ft-kips (these moments occur at the same location on the beam and can therefore be combined). a. If load and resistance factor design is used, determine the maximum factored bending moment (required moment strength). What is the controlling AISC load combination? b. What is the required nominal moment strength for a resistance factor of 0.90? c. If allowable strength design is used, determine the required moment strength. What is the controlling AISC lead combination? d. What is the required nominal moment strength for a safety factor of 1.67?