Pitch of a Roof Truss

Pitch of a Roof Truss

Pitch of a roof truss is defined as the maximum rise of top chord of the truss (h)  divided by total span of truss.

                        Pitch = h / L

Inclination of a Roof truss :-

 The slope ( Tan ϴ ) or angle (ϴ) of top chord of a truss with respect to the horizontal is called inclination of truss.

Height / Rise of truss :-

The maximum height of the truss with respect to the ends of the bottom chord is called height or rise of truss.

Panel Length :-

In case of roof trusses, the distance between  two consecutive top chord joint is known as the panel length.

Purlins :-

These are the small beams that run perpendicular to the truss and rest at the panel point of the truss.

J- Bolt :-

J-bolt also called hook bolt , is a bolt in the form of letter   ” J “  used to fix roof –sheathing or wall sheathing to purlins and other structural members.

Eave’s Gutter :-

A channel is provided at eave level to collect rain water, which is called eave gutter.