When the roof is subjected to a load the top chords are put under bending and compression forces and transmit the roof loads down to the supports.
Triangular roof truss design.
A mono truss is a one sloped truss that forms a right angle triangle.
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The pitched or common truss is characterized by its triangular shape.
It is most often used for roof construction.
It s often used for sheds garages or extension of an existing roof.
A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper.
Its conventional triangular truss design is that the two sides are sloping up to the apex above with the struts known as the upper chords leading down from it.
Parallel trusses are used for deep roofs whereas triangular are usually employed in the trusses with steep pitches.
These are attached to the horizontal beam thus making up the triangle s base.
Typically the upper chords have different lengths in this particular type of truss that make the apex off center.
It can be said in the case of steel roof truss design calculations that the cost of truss should be equal to twice the cost of purlins and the cost incurred on the roof covering.