Example 7.8 Design a lintel over an opening of 3.5 m. The lintel is made in a wall 400 mm thick The lintel has to support a uniform load of 50 kN in addition to the masonry. The weight of the masonry may be assumed to be 19.2 kN/m° and the height of brick work above the lintel is 4.0 m. The yield stress of the steel may be assumed 250 N/mm2.

The masonry pier is subjected to the F = 780 kN load. Consider x = 0.25 mm and y = 0.5 mm. Neglect the weight of the pier. Part A Determine the normal stress at corner A. Express your answer with the appropriate units.     Part B Determine the normal stress at corner B. Express your answer with the appropriate units.     Part C Determine the normal stress at corner C. Express your answer with the appropriate units.

Use fr ( Modulus of Rupture) = 0·7√ f'c a = 500mm b = 200 mm f'c = 21 mpa C = 150mm d = 500mm e = 150mm Concrete density (normal) = 24 kn/m² a) Determine the gross moment of Inertia, in x10 mm" b.) Determine the cracking moment, in kN.m c.) betermine the live load that the beaum can carry if it has a simple span of 10 meters in KN.m. b —a—

An aluminum alloy pipe with an outside diameter of 4.0 in. and a wall thickness of 6/16 in. cantilevers upward a distance of L = 12 ft. The pipe is subjected to a wind loading that increases from wA = 11 lb/ft at its base to wB = 17 lb/ft at its tip. (a) Compute the maximum value of Q for the pipe. (b) What is the maximum vertical shear stress in the pipe?