The cord size and web configuration are determined by span load and spacing.
Types of roof trusses and their uses.
Principal rafter or top chord bottom chord or main tie.
Fan truss spans upto 10m to 15m it is made of steel.
Fan trusses are form of fink roof truss.
It can be used for spans from 10 15m.
The following are various components of a roof truss.
Studio two bearing points truss.
A common truss is recognizable by its triangular shape and is most often used in roof construction.
Space frame truss contrast to planar truss the members and the nodes are located in the three dimensional space.
As the name implies this roof appears flat in structure although it is always pitched at a wider angle to allow water runoff.
Raised heel roof truss.
There are two fundamental types of trusses i e.
If all the members and the nodes are in a planar surface then this truss is a planar truss.
Another simple truss that s easy to use the king post features a central post and is well suited for smaller structures.
In fan trusses top chords are divided into small lengths in order to provide supports for purlins which would not come at joints in fink trusses.
It is usually used for roof construction some common trusses are named in accordance with their web configuration.
Common types of roof trusses parallel chord roof truss.
The attic truss or room in roof truss provides a simple structural roof and floor as one complete section.
It can be used to span roofs of about 8 yards in width and while it s usually made of wood it can be made from a combination of wood and steel if desired.
These trusses are most often used as the roof trusses.
Planar truss as the name implies it is a two dimensional truss.
Below are the common types of roof.
This method allows for greater energy efficiency.
Pitched truss or common truss characterised by its triangular shape.
30 different types of roof trusses illustrated configurations 1.