How To Build A Mono Pitch Roof Truss

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How to build a mono pitch roof truss.

The run or the base number is 12 inches. The standard roof truss spacing is 2. A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper. Flat the most economical flat truss for a roof is provided when the depth of the truss in inches is approximately equal to 7 of the span in inches.

To build a simple wood truss start by measuring the length and height of the structure you re reinforcing to determine how big your truss should be. Measure 1 1 2 inches in from one side and draw a line with the speed square to mark the location for the first mono truss. Difference in slope between the top and bottom chords is at least 3 12 or the bottom chord pitch is no more than half the top chord pitch. 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.

A mono truss is a one sloped truss that forms a right angle triangle. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. In such a house although the main roofing comes with a flat ceiling the mono pitched part of the roofing would have a slant. It s often used for sheds garages or extension of an existing roof.

One needs to place the mono pitch roof at a height which is lower than that of the height of the ceiling of the main construction. Then plan for the bottom chord of the truss to be 1 4 inch longer than the floor of the structure. It will use the current cost of wooden rafters based on the average price found at home improvement stores. This online truss calculator will determine the all in cost of your truss based on key inputs related to the pitch width and overhang of your roof.

Measure 23 1 4 inches in and draw another line for the outside of the second truss. The rise will be the elevation change over the 12 inches. This sort of mono pitch construction is known as lean to roof. This is the distance between trusses.

Mark truss locations on the front and back wall caps of the structure. Types of mono trusses 1. Get on a ladder with a tape measure speed square and marker.