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.
Tie in roof truss.
It is in tension and is holding the top chords of the truss against spreading.
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.
Trusses like rafters form the profile of the structure s roof.
The king post roof truss is the simplest of the trusses because of its simple composition.
However unlike rafters trusses are pre assembled before being installed.
It is because the bottom chord of a roof truss is in tension that the truss member can be as small as a 2x4.
Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.
Closed in which the bottom chord is horizontal and at the foot of the truss and open in.
The bottom chord of these roof trusses is serving as a tension tie.