Girder Roof Truss Design

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.

Girder roof truss design. Using these structures in roof design eliminates the need for a load bearing wall below resulting in open floor plans. When it comes to roof trusses you need to consider everything from design to cost to the pros of using trusses instead of stick framing a roof. Primarily the role of a girder truss is to support other structural elements in the frame such as traditional trusses rafters or purlins. Offering numerous custom design options our trusses present an economical and struc turally superior method for rapid erection.

Contractors and builders know. Timber girder trusses are excellent for large buildings and look great with steel joinery. Trusses are commonly used to provide support for roofs bridges and other expansive structures. A girder truss is designed to support other secondary roof supports.

It is particularly useful as a steel bridge truss design software or roof truss calculator. You can use the links below to navigate throughout the guide. Top general geometry for efficient structural performance the ratio of span to truss depth should be chosen in the range 10 to 15. Users can also control settings such as units display settings of truss members etc.

An advantage of the truss design for roofs is that ducts and pipes that are required for operation of the buildings services can be installed through the truss web i e. Buildings constructed in l or t shapes use girder truss systems where the roof changes direction. To put together a simple wooden truss you ll fasten a number of pre cut beams into a chosen configuration inside a sturdy triangular frame which will help distribute the weight of the structure more evenly. For that reason girded trusses are designed to be exceptionally strong and rigid.

By clicking the settings button. If you re looking for a complete guide for roof trusses then you ve come to the right place. The truss is a framework consisting of rafters posts and struts which supports your roof. These loads can be other trusses that attach by sitting on top of the girder or they may attach to the side of the girder using truss hangers.

Girders may also be designed to accommodate special applications or designs. Mitek trusses provide more design flexibility inside and out than con ventional framing. 2 roof floor truss manual 7 31 08 10 43 am page 4. As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss.