How To Lay Out Roof Trusses

Trusses are prefabricated roof framing members that are set into place on top of framed walls.

How to lay out roof trusses.

A diagram and a layout. 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. Roof trusses arrive at the jobsite on the bed of a large truck. Build a fink truss to bolster a floor roof or deck.

The very first step for building roof trusses is to prepare a design layout that can be sketched by a professional architect or can also be done by using a software that is specifically meant to design a roof truss. In a fink truss the internal joists are arranged in a w shape ensuring even weight distribution from one end to the other. That marks the inside edge of the first truss. Fink trusses were originally invented for the purpose of beefing up bridges but many contractors now use them to increase the strength of interior structures.

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. Roof truss design 1 24 span 2 web with plywood gussets figure 1 figure 1 roof truss 24 span 2 web with plywood gussets detailed information for a 2 web roof truss with a 24 span with plywood gussets. If you can tell us the size of your structure and the truss spacing distance between trusses then we can tell you how many trusses you will need. You can certainly figure out the number of trusses on your own if you wish but we still ask for a building layout so we can see how much area the.

Gambrel roofs are symmetrical with two slopes on each side of the roof. A gambrel roof is a popular roof style on many contemporary barns and sheds. The second step in building a roof truss is to prepare the materials needed. The average do it yourselfer can hang them by following a few tried and true methods.

Use a ladder tape measure speed square and pencil or marker to lay out the truss spacing on the wall caps the top boards on the two outside walls. These will include wood a hammer a saw roof truss. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions. As well running an attic air duct system can be very difficult if the roof trusses were not designed for that application.

Start at the back on one side. Because the trusses are heavy and unwieldy a crane is usually necessary for moving them.