Roof Truss Design Example

To illustrate this a simple design example has been presented.

Roof truss design example.

A standard rule of thumb is the cathedral roof pitch can be up to one half of the roof pitch. Scissor trusses give a nice cathedral ceiling to a room. The same thing is true for the bridge of the truss. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.

The truss is made up of howe truss configuration spaced at 3m intervals. Structural design i steel structures prof. For example if the roof pitch is an 8 12 like this one pictured the cathedral pitch can be up to a 4 12. The more complex the truss framework is the greater quantity of these joints will be required.

Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. 2 roof floor truss manual 7 31 08 10 43 am page 4. Offering numerous custom design options our trusses present an economical and struc turally superior method for rapid erection. Roof truss analysis 1 6.

Apr 25 2019 explore robert heimbigner s board roof truss design followed by 984 people on pinterest. 6b roof truss. In this example a parallel chord steel roof truss is analyzed for typical dead and roof live loads. The skeletal structure of a roof system 18 0m long and 7 2m wide is as shown in figure below.

Mitek trusses provide more design flexibility inside and out than con ventional framing. Sppu pune page 1 unit no. Example roof truss analysis. Selection of gantry girder design of cross section check for moment capacity buckling resistance bi axial bending deflection at working load and fatigue strength.

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. Steel roof truss design example is evident in the major structures built across the globe. Ce 331 fall 2010 example. Contractors and builders know.

For example 4 12 pitch means 4 inches of rise in 12 inches of run. The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. Steel trusses are mainly used to build the strong base.

The photo below shows a truss girder painted gray supporting the roof of a gymnasium. Design of industrial roof truss 1. 6 6a design of gantry girder. Design of roof truss should follow the general layout that is prepared first.

These steel joints are needed to support the overall truss. See more ideas about roof trusses roof truss design roof.