ninum pipes n-connecte that have an outside diameter of 130 mm and a wall thickness of 14 mm. Determine the normal stress in each truss member. Assume truss dimensions of a = 10 m, b = 6.25 m, and c = 5 m. Tensile stress is positive, while compressive stress is negative. b D B Answer: JAB JAC 11 apt i M. Bc = OBD = OCD = i a MPa MPa MPa MPa MPa

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Answer the following for the section at Point D Only Calculate the distributed load "w" that: Will cause the section crack Will cause the reinforcement to yield. Material Properties: F'c = 5000 psi Fy = 60000 psi Es = 29000000 psi Ln = 27 ft L wl₂² 16 wl,² 14 CD L wl,2 vl₁² 10 11 win² 16 h: 28 in A=4 in² b=14 in n d: 25 in

The column above is subjected to axial loading only. Assume the following: • E= 29000 ksi G = 10000 ksi • = 986 in4 A = 60 in? • L= 20 ft • Grade 60 steel (60 ksi yield stress) • The column is fixed at the top and pinned at the bottom Which of the following is closest to the maximum normal stress the column can support (before yielding or buckling)? 167 ksi 24 ksi 42 ksi 60 ksi