How To Work Out A Cut And Pitched Roof

Use a tape measure to measure the entire width of your building.

How to work out a cut and pitched roof.

Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. You can also calculate roof pitch even without using a roof slope calculator. Calculate the roof pitch as the proportion of rise and run. A pitched roof is a roof that slopes downwards typically in two parts at an angle from a central ridge but sometimes in one part from one edge to another.

There are two basic methods of pitched roof construction. Hold the 0 mark of the tape measure against the roof. They have a pitch ranging from 4 12 to 9 12. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc.

Conventional roofs are the easiest to construct and you can walk on them safely. Measure the vertical distance from roof to level. For example the width of the building may be 72 75 inches 184 8 cm. These roofs have a pitch less than 4 12.

It is often compared to slope but is not exactly the same. High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. Pitch rise run 1 5 6 25.

The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness. Calculate the rafter length substituting these values into the following formula. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. An angle cut is a very common cut needed for constructing rafters for any roof.

Let s say it is equal to 1 5 m. Use a pencil to jot the width down somewhere. Knowing how to make this calculation will make your roof construction project easier and will ensure the safety and success of your roofing project once completed. Move the tape measure along the the roof until it hits the level at exactly the 12 inch mark.

Measure the rise of your roof. Although ceramic tile roofs are expensive they can have a life span of over 100 years.