ROOF TRUSSES - Different Types & Styles
On this page we show a sample of some of the mostly used roof trusses. &Other types of trusses can also be custom designed and manufactured to fit your needs.
Image on this page shows different roof truss types used in residential,
commercial, farm and other types of buildings. Most of the barns are built
using Regular or Gable Truss design with different roof slopes. The most
affordable way to build a pole barn is to use Regular Gable Trusses with 4/12
roof pitch and space them 48" o.c. (note: if using shingles on roof, trusses must be
spaced 24" o.c.). The reason why regular truss with 4/12 pitch is the most
affordable is because it's easier to build, takes less material and is
considered a stock item at many lumber yards that specialize in selling pole
List of Roof Trusses:
- Regular (Common)
- Scissor Type
- Dual Pitch
Regular (Common) Truss - The most affordable and widely used truss design
in residential and pole building industry.
Scissor Truss - Due to sloped bottom chord, this truss provides more
headroom on first level. Provides cathedral ceiling.
Cambered Truss - Provides extra first level headroom and flat ceiling
Dual Pitch Truss - Top chords are built with two different roof
slopes, with a front slope usually steeper than back slope.
Monopitch Truss - May be used to build overhangs, single sloped roofs
or longer-span Common truss with center support.
Gambrel Truss - Used mainly for its style to resemble a "barn look".
May also be built with storage attic.
Cathedral Truss - Also know as Vault truss is used to provide a
Studio Truss (Studio Vault) - Used to provide an extra headroom or a
Vaulted ceiling in certain application.
Polynesian Truss - Has a dual pitch top chord where the slope
significantly increases from the heel to the peak.
Inverted Truss - Requires two bearing supports and is often used to
build a Double Inverted Truss with Vaulted ceiling.
Flat Truss - Has two parallel chords and is used to build a floor or a
Bowstring Truss - Is used where curved roof surface is required and is
built with short top chord segments.
Attic Truss - Is used to provide storage space up in the attic.
Bottom chord of the room floor is built with heavier timber and is designed as a
floor joist to carry required live loads.
NOTE: Many other configurations and shapes of trusses may be built by
altering top or bottom chord of a truss. When designing a truss, many
factors such as snow loads, wind loads, live, dead loads, etc. must be taken
into consideration. A truss manufacturer must either hire an engineer or
often has an engineering department to design each truss per required codes.