Roof Truss Chord

Gable trusses will cost anywhere from 25 to 50 more than standard style trusses.

Roof truss chord.

Standard repair detail to notch 2x6 top chord of gable truss. Some common trusses are named according to their web configuration such as the king post fan fink or howe truss. All truss designs are optimized to provide the most economical configuration for the specific application. The parallel chord or fl at truss gets its name from having parallel top and bottom chords.

Roof trusses are convenient and reliable. 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. The dropped chord variant is composed of a convention truss with a secondary chord truss suspended below to help reduce uplift. Any weight imposed on the end truss is directly transferred to the endwall which transfers the weight to the foundation.

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. Similar to the raised heel truss this type also creates a vapor barrier creating great insulation characteristics. Standard roof truss configurations parallel chord 4x2 floor truss with chase 2x4 floor or roof truss can design with a chase as well are determined by span load and spacing. The gable truss serves as the end cap for the roof.

The parallel chord or flat truss gets its name from having parallel top and bottom chords. Dropped chord roof truss. Box 177 la crescent mn 55947 507 895 8400. On a typical truss they will be made from 2 x 4 s.

The same thing is true for the bridge of the truss. These trusses are positioned on the top plate of the endwall so the entire bottom chord is supported by the wall. The top chord or chords are the single most important elements of a roof truss. All truss designs are optimized to provide the most economical application.

Standard repair detail to notch 2x6 top chord of gable truss. Standard repair detail to pad top chord to match roof plane 2 1 2 maximum mii rep11b. 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.

For trusses with longer spans or when they are spaced very far apart for purlins use 2 x 6 s. Standard repair detail to pad top chord to match roof plane 2 1 2 maximum download. Gable trusses are built on each end of the roof framework to support roof sheathing. The chord size and web configuration are determined by span load and spacing.

500 sycamore street p o. End trusses close in the end of a building and provide a nailing surface for the upper end wall or rigid sheathing. They have two top chords one bottom chord and multiple vertical posts.