Steel Roof Truss Spacing

Gable lean to and header.

Steel roof truss spacing.

It has been done for centuries. The roof truss spacing standard is important because eighty percent of new homes are built with standard pre fabricated trusses. 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. 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.

Traditionally roof trusses are made of timber or wood. Woods are considered as the strongest most resilient materials to hold up the structure of the roof. The more complex the truss framework is the greater quantity of these joints will be required. Gable trusses are in stocked in a 4 12 slope x 20 24 30 and 40 width and special order up to 50 wide 60 for tubing trusses.

Standard roof truss spacing. All come with 16 overhang past post. One goal of truss design is to build a roof structure that is as strong as necessary but that uses the minimum amount of lumber. Spacing of trusses for metal roof.

In some cases however the exact spacing of the rafters doesn t matter if the roof has other means of supporting the metal panels. The same thing is true for the bridge of the truss. Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. Metal is surely even stronger.

This means that if you re in charge of repairing or installing roofing trusses you ll be expected to hold to these standards. A sl series truss is a single slope truss that includes steel girders and steel columns with clear span widths from 10 through 80 with available eave heights of 8 through 20. 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. These steel joints are needed to support the overall truss.

12 50 a foot 12 40 14 95 a foot 42 60 all lean to shed trusses 1 12 pitch. 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. A 10 8 6 and 4 spacing between trusses has been the standard for most types of construction for years. Options to set the roof girders on wood post or concrete wall also available.

These standards are as follows. Typical roof truss. 12 50 a foot up to 20 14 95 a foot over 20 we stock 24 30 and 40 gable trusses and 12 lean to trusses. However as the technology starts to get advanced metal roof trusses become a thing.