Garage Roof Truss Spacing

The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation.

Garage roof truss spacing.

Their programs will allow for trusses to be placed on 12 foot or even 16 foot centers and their engineers will place their engineer s seal on the drawings to verify. Engineers have since determined however that the physical design of a post frame building will allow for standard spacing as great as 12 feet from the center when using high quality metal connector plates and lumber. In terms of how this generally operates it is worth noting that that too is with the same two by four material and the trusses are also going to be around the same spacing that is twenty four inches off centre. Most are spaced between 18 26 inches apart.

The manufacturers of the steel roof truss plates also referred to as gussets or gang nails provide the engineering design for pre fabricated wood trusses. Flat the most economical flat truss for a roof is provided when the depth of the truss in inches is approximately equal to 7 of the span in inches. Once you ve calculated the number of trusses you will need you should purchase the lumber. In a garage the garage roof truss spacing is usually made in accordance with the local building laws after all a garage is an occupied space as much as a house is.

Most economical when the difference in slope between the top and bottom chords is at least 3 12 or the bottom chord pitch is no more than half the top chord pitch. Of stuff on it. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. Scrap of plywood over the chords and set about 40 lbs.

Roof trusses were usually produced on site in the past. So if your ceiling is unfinished you have some excess carrying capacity up there. Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span. Depending on the complexity of your free computational tool it may require you to enter details about rafter spacing usually 16 on center bridge type height and board size.

The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length. 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.