If this distance measures 4 inches you have a 4 in 12 pitch.
How to measure roofing sheets.
The easiest way to measure this section is to divide it up into three different sections.
Now find out the length and breadth of each roofing sheet and also.
A 4 8 sheet of plywood is 32 ft 2.
Then area of roofing sheet 3 6 x 1 8 6 48m2.
S1 s2 and s3.
Therefore total numbers of roofing sheets needed approximately is.
On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.
Pitch measurement method 1 1.
Determine the width and length of the metal sheets to be used.
As you can see s1 and s3 are the same size but you still need to document all measurement points to verify your material calculation accuracy.
Since s2 is now a rectangle simple l x w is all that is required.
Now find out the length and breadth of each roofing sheet and also multiply length by breadth.
Obtain the data from the manufacturer s specifications or by direct measurement.
Multiply length by breadth.
So dividing the area of the roof by 32 will give you the number of sheets needed.
Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed.
Assuming the ceilling sheet is 3 6m in length and 1 8m in breadth.
Standard sheets in the u s are 36 inches wide but the.