The bear cross section shown below has been proposed for a short pedestrian bridge. The cross section will consist of two pipes that are welded to a rectangular web plate. Dimensions of the cross section are: h = 390 mm tw = 14 mm d = 100 mm t = 4.8 mm Additionally: • The area of each pipe is A = 1436 mm². • The moment of inertia of the entire bear cross section about the z centroidal axis is lz=140920000 mm². If the bearn will be subjected to a shear force of V = 170 kN, determine the shear stress at point H, located at y = 100 mm above the z centroidal axis.

A beam is subjected to uniform force w as shown in the figure below, E of the entire section is 30000 kips/inch^2, I is 240 in^4, if point A is supported by 0.003 rad clockwise before assembly, and point B is supported at Subside 0.3 inches before assembly, try to calculate the reaction force of point A and point B.

The beam cross section shown below has been proposed for a short pedestrian bridge. The cross section will consist of two pipes that are welded to a rectangular web plate. Dimensions of the cross section are: h = 390 mm tw = 12 mm d = 100 mm t = 6.4 mm Additionally: • The area of each pipe is A = 1882 mm². • The moment of inertia of the entire beam cross section about the z centroidal axis is lz=171660000 mm4. If the beam will be subjected to a shear force of V = 120 kN, determine the shear stress at point H, located at yμ = 100 mm above the z centroidal axis. H Hv K Answer: TH= X MPa Ун Ук K Iv

number of significant digits; the tolerance is +_1 in the third significant digit