It has two upper chords with one longer than the other.
Steep pitch roof trusses.
The run or the base number is 12 inches.
For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically.
Since it has steep sides there is sufficient room for a living space below the roof or can be used as a storage space in the attic.
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The steep pitch creates a tall truss that has a lot of room for webs or in many instances the opportunity for an attic space in the interior of the truss.
The gambrel roof truss resembles the appearance of a barn roof.
The rise will be the elevation change over the 12 inches.
A pitch truss with a sloping or non sloping vertical interior ceiling detail.
See the image below for more explanation on rise run and pitch.
The pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run.
It can take various forms and often used for aesthetic purposes adding height and focal interest to the ceiling.
Gambrel trusses create a similar structure to what would be found in a stick frame barn structure with a steep pitch from the walls transitioning to a low pitch closer to the peak.
This type of truss is perfect for the dining room living room great room and kitchen.
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A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.