The beam AD is carrying a linearly varying distributed load as shown below. The beam is supported by a 5-member steel truss. Member BC has a rectangular cross section 4"x3/4" which splits into two equal parts near the connection C each being 4"x3/8". Member CD has a circular cross section d=2.5 in. the member flatness near the connection C to form a rectangular cross section 4"x2.5". The pin at C has a dimeter equal to 2" which pierces through bars BC and CD. The details of the members near end C is shown below. A 0.66 kip/ft ● -6 ft Determine the maximum shearing stress in the pin at connection C. Determine the axial stresses in different parts of member BC Determine the axial stresses in different parts of member CD B D -6 ft C 26.66 kip/ft E 5 ft Member Member BC 3/4 in ↓ Member CD 4 in d=2.5 in Top view of connection C d=2 in 3/8 in Men er CD H d = 2 in Side view of connection C 4 in detail of member CD flat end 2.5 in thick

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Plane and Space Trusses

In civil engineering, a truss is the most important structure that forms the most fundamental member of any building structure and commercial complexes. Trusses are composed of individual members or links that are interconnected by suitable joints, such as rivets, welds, or bolts, and nuts. In trusses, the interconnection leads to the formation of a series of triangles joined together such that all the triangular members behave as a single rigid body. In a simple truss, three members are connected to form a truss member. In trusses, the force always acts at the joints or the interconnection between the individual members.