Roof Truss Analysis Example
Example roof truss analysis4 6.
Roof truss analysis example. State whether the members are in tension or compression. We will now discuss the trusses that are used in making stable load bearing structures. Nodal spacing of the trusses 1 2m. Dead loads on truss girder.
Spacing of the truss 3 0m. Plr ext 12 psf x 25 ft x 10 2 ft 1 50 kdue roof live load 7 3 k 1 5 k 1 5 k. The photo below shows two types of trusses. Analysis of truss by the methods of joints and by the methods of section is explained in the article.
Example 3 2 determine the force in each member of the roof truss as shown. The examples of these are the sides of the bridges or tall tv towers or towers that carry electricity wires. A truss girder painted gray and bar joists painted white. Learn truss analysis methods with examples.
We know the basics of equilibrium of bodies. Example roof truss analysis. Lr 20 psf x 0 6 12 psf plr int 12 psf x 25 ft x10 ft 3 00 kdue roof live load. Truss analysis using method of joints is greatly simplified if.
Roof trusses they are often. Self weight of long span aluminium roofing sheet 0 55mm gauge thickness 0 019 kn m 2. Span of roof truss 7 2m. The reactions at the supports are given as shown.
In this example a parallel chord steel roof truss is analyzed for typical dead and roof live loads. At 25 ft x 10 ft panel x 8 panels 2000 sf r1 1 2 0 001 x 2000 sf 0 60. Roof live load lr 20 psf r10 6 r1 1 0 r1 1 2 0 001 at.