The framed structure illustrated in the diagram consists of identical right angled triangles of base 2 metres and is symmetrical in design with angles as shown and all loads in kN. The frame is supported at pins B and D. (a) Determine the magnitudes of the support reactions at pins Band D; (b) Use the method of joints to determine the type (tension or compression) and the magnitude of the force in each member of the frame. B D 15 kN 15 kN 45° 45 E 20 KN

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