(Solved): A canopy roof truss is shown in Figure Q1. The truss is supported at Nodes A and G. The truss need ...

A canopy roof truss is shown in Figure Q1. The truss is supported at Nodes A and G. The truss needs to resist three concentrated loads at B, C and D, as indicated. XKN Y KN Z KN A B ? D am F b m Figure Q1 E cm dm (a) Find the reactions at A and G. [3/20 marks] (b) Using method of section, determine the internal forces of members BC, BE, EF, AB, AF and FG. State if the members are in tension or compression. Assume all members are pin connected. [12/20 marks] (c) Assuming the joints are connected in double shear, calculate the axial stress for member FG and the shear stress for the associated pin at node G. The cross- section areas of the members are 1780 mm² and the pins have a diameter of 10 mm. [5/20 marks]