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.
Tie in roof truss.
However unlike rafters trusses are pre assembled before being installed.
In a nutshell it s made up of a central vertical post called the king post two rafters meeting at the apex and a tie beam or the horizontal base.
Unlike other trusses which support on the ceiling tie the bottom chord raised tie trusses are supported partway up the lower end of the rafters.
Trusses consist of two lengths of lumber that create the upper edge of the truss a bottom chord that connects the two opposite ends of the top chord and a series of supporting webwork in the middle.
A raised tie roof truss is a truss where the bottom chord making up the triangle shape moves towards the top of the triangle.
The king post roof truss is the simplest of the trusses because of its simple composition.
Strip the roofing from the old roof at the connection point to.
The bottom chord of these roof trusses is serving as a tension tie.
Closed in which the bottom chord is horizontal and at the foot of the truss and open in.
Trusses like rafters form the profile of the structure s roof.