Sloped Roof Truss

That is the roof s rise.

Sloped roof truss.

The run always remains constant at 12 inches. Use prefabricated mono trusses for the easiest and best framing on a single slope roof. Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. Conventional slope roof range between 4 in 12 and 8 in 12.

The more complex the truss framework is the greater quantity of these joints will be required. Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan. Select an angle of slope away from a house into an area with good drainage and complementary to an existing house or other building. Trusses are the more modern engineered method for supporting a roof.

The rise will be the elevation change over the 12 inches. The maths behind this number is that it is the square root of rise run 2 1. The same thing is true for the bridge of the truss. Roof slope should be no less than 3 12 to maintain steel warrantees.

Roof trusses are actually engineered all of our trusses have an engineer seal on them which means they have met universal standards. The common truss pictured above is an a frame that fits double sloped houses. Many roof truss fabricators are limited to the ability to build trusses 12 feet in height and for those who can shipping becomes an issue as special permits must be acquired as. A low slope roof is anywhere from 2 in 12 to 4 in 12.

The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope. It s often used for sheds garages or extension of an existing roof. 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.

Angle the angle of a roof is the same as the roof s slope except instead of being. A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof. The run or the base number is 12 inches. A flat roof has a slope of 2 in 12 or less.

Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Roof pitch calculator results explained. For example 4 12 pitch means 4 inches of rise in 12 inches of run.

If desiring a clearspan the overall height of the roof trusses should be no more than 12 feet. A mono truss roof allows for more sunlight and visual space proper drainage and relatively cheaper. There are two main categories of roofing.