The Pratt roof trusses are uniformly spaced every 15 ft. The deck, roofing material, and...

The Pratt roof trusses are uniformly spaced every 15 ft. The deck, roofing material, and the purlins have an average weight of 5.6 . The building is located in New York where the anticipated snow load is 20 and the anticipated ice load is 8 . These loadings occur over the horizontal projected area of the roof. Determine the force in each member due to dead load, snow, and ice loads. Neglect the weight of the truss members and assume A is pinned and E is a roller.