Roof Support Members

Collar ties rafter ties tension beams structural ridge beams.

Roof support members. The top members of a truss are known generically as the top chord bottom members as the bottom chord and the interior members as webs in historic carpentry the top chords are often called rafters and the bottom chord is often referred to as a tie beam there are two main types of timber roof trusses. Closed in which the bottom chord is horizontal and at the foot of the truss and open in. A waterproofing layer that protects the roof valleys from leaking. A horizontal beam that connects two rafters near the ridge of a roof.

This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. The main structural members of patio and deck overheads are posts or columns and beams which run from post to post or from post to ledger. Joist is the horizontal supporting member which runs between beams foundations or walls to support a ceiling. A diagonal member of the truss that has a compressive force acting on it and used to maintain rigidity and add strength to the structure.

It is often used to prevent separation of the rafters during high winds but can also be used simply to frame the ceiling. It is made from wood steel or concrete. Some of these can support the roof and prevent ridge sagging and wall spreading. A waterproofing seal installed along the roof s valley line with taktekkernbergen no.

The beams support the roof rafters or joists which in turn hold the roofing material.