The rigid beam BC shown in the figure is supported by rods (1) and (2) that have cross-sectional areas of 175 mm² and 300 mm², respectively. For a uniformly distributed load of w = 16 kN/m, determine the normal stress in each rod. Assume L = 2.8 m and a = 1.7 m. The stresses are positive if tensile and negative if compressive.

Determined the maximum normal stress experience by the entire axial member and determine the section, which maximum stress occurs(ie AB or BC or CD)

The pins at B and D in the figure apply an axial load to diagonal bracing member BD. If BD has a rectangular cross-section measuring 0.50 in. X 2.00 in., what is the axial stress in member BD when the load is w0=220 lb/ft?

An aluminum right-circular cylinder surrounds a steel cylinder as shown in the figure. The axial compressive load of 200 kN is applied through the rigid cover plate shown. If the aluminum cylinder is originally 0.25 mm longer than the steel before any load is applied, find the normal stress in each when the temperature has dropped 20 K and the entire load is acting. For steel take E = 200 GPa, ? = 12 × 10–6 /°C, and for aluminum assume E = 70 GPa, ? = 25 × 10–6 /°C.