How To Work Out The Size Of A Roof

5m x 4m x 4 2 40 square metres.

How to work out the size of a roof.

For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Roof length x half roof width x roof height 2 roof area calculate the area of a roof to work out how much guttering is required so for a roof that is 5 m long with a height of 4 m and the roof width is 8 m which makes the half roof width 4m we can calculate the effective roof area like this. It is often compared to slope but is not exactly the same. Outside of the u s a degree angle is typically used.

The roof slope height is 6 98m. Measure the pitch or angle of the roof slope. 1 roof square 100 square feet. L h 2 area calculating an area of a triangle when estimating a roof.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. So if you divide your answer of a product of length times height by two you will get the area of a triangle. How to calculate the roof area of a building roof width m x roof slope height m half roof area m take this example of a perfectly square house with 76m floor space a 45 pitched roof and a 2 35m roof height. Just multiply the length and width dimensions.

Be sure to find the area of any dormers on your roof as well. Make a note of the square footage of each square or rectangular section on your diagram. Work out the rafter or hip valley length. You will need to express this size in terms of square feet.

The length l times the height h of a triangle is twice its area a2. Roof span 2 x roof pitch constant for rafter rafter length. Measure the span building width or run half building width roof measurement guide. If a section is 120 feet 37 m x 100 feet 30 m its total square footage would be 12 000 square feet 1 100 m 2.