How To Work Out M2 Of A Roof

For hipped roofs with eaves gutters a simplified formula can be used to calculate catchment area but the slope of the roof must be known.

How to work out m2 of a roof.

Number of spans for each area of roof divide the sheeting length by the sheeting span and if necessary round up to the next whole number. 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. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Vertical walls abutting a roof must be included in the catchment area.

If the roof has multiple pitches such as those found on dormer windows or porches you will need to draw these separately. 3 97 x 12 6 x 2 100 04m total roof area when you know this you can work out all the materials needed to complete your project. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. Then add one the length of each batten is the.

If your measurement is in another unit of measure centimeters for example then you ll need to convert to square meters. There are a lot of factors that will affect how much getting your roof pitched will cost design style accessibility cost of labour etc. What is the average quote for getting a roof pitched. Outside of the u s a degree angle is typically used.

1 roof square 100 square feet. For asphalt shingles if you choose another material such as metal or wood the range is 7 35 10 73 per sq ft. In the usa you can expect to pay between 3 19 4 43 per sq ft. The length l times the height h of a triangle is twice its area a2.

Then proceed to draw the surface area of the roof that has a different pitch. Measure length and width start by measuring the length and width of the space in meters using a tape measure or other measuring tool. After drawing the perimeter of the roof add a new drawing layer with the plus symbol found in the bottom right corner. So the total catchment area of this roof is a b c e d e 2 however if you have a pdf file drawing of the roof plan it is very easy to get the roof area.

Refer to as nzs 3500 3. L 30 feet h 12 feet 30 12 2 180 square feet. Area of slope rafter length x roof length x 2 on both sides of the roof with the figures in this example the calculation would look like this. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

Roof drainage systems design as nzs 3500 3.