They each have their place, but on the same style roof, trusses would be stronger.
use the 17" on your rafter square
Each roof truss is structurally designed for a particular situation. Where a truss overhangs or extends beyond a supporting wall, so that the truss is partly cantilevered (e.g. in a deep eave), the calculations by the truss designer will take this into account.
100 feet long 4 1/2 pitch
A truss is the triangler wood frame work for a roof. Rafters are the singular peices of wood put between them That make up the begining of the celing
Roof trusses are designed to counter the weight imposed on them. If your roof is completed tiled EC. and looks out of shape. I could be. Wrong design/ trusses too wide apart/ roofs 600mm apart tended to sag between/ the load bearing partition under truss higher than external walls. seen this before completely distorted the whole roof.
To cut a bird's mouth when constructing a roof truss, use a saw to create a notch in the bottom of the rafter where it meets the top plate of the wall. This notch allows the rafter to sit securely on the wall and provide support for the roof structure.
A truss is a prefabricated piece of frame work that is installed at the site, but actually assembled somewhere else. A rigid framework, as of wooden beams or metal bars, designed to support a structure, such as a roof. A rafter on the other hand, is a single piece of wood, usually a 2x4, that is part of the supporting structure of a roof that is built on site.
A rafter is part of a roof, it supports the roof.
what is meant by camber? What are the standards in the Lattice bridge, Truss & rafter fabrications
use the 17" on your rafter square
The recommended rafter spacing for a metal roof installation is typically 24 inches apart.
Each roof truss is structurally designed for a particular situation. Where a truss overhangs or extends beyond a supporting wall, so that the truss is partly cantilevered (e.g. in a deep eave), the calculations by the truss designer will take this into account.
Rafter ties are horizontal beams that connect the rafters at the bottom of the roof, while collar ties are horizontal beams that connect the rafters higher up on the roof. Rafter ties help prevent the roof from spreading apart, while collar ties help prevent the roof from sagging.
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A common synonym for "roof support" or "wooden beam" that is six letters long is "rafter."
The maximum allowable 2x6 rafter span for a residential roof structure is typically around 9 feet.
Truss