A truss is a frame that supports loads by efficiently
transferring its forces to end supports. While stick
framing might use larger 2x8, 2x10, etc. members
(which are expensive and hard to find without
going into old growth forests), and might require
either additional beams or interior load bearing
walls, trusses can span a longer distance without
additional supports, while using less expensive
and more plentiful 2x4 members, usually arranged
in intersecting triangles.
Trusses can span up to approximately 90',
although very long truss spans are more
challenging to deliver, erect, brace and install
properly. While longer trusses may be "wobbly" as
they are lifted off of the ground and onto the
bearing walls, once they are properly braced, the
truss system is extremely strong.
How Does a T
How Does a T
r
r
uss W
uss W
ork?
ork?
6
Most truss manufacturers utilize
sophisticated truss design software that is
capable of designing the truss system as
well as the truss itself.
The truss designer will work
from a set of plans, first
creating a truss placement
plan, and then designing
each truss in the system.
