9/7/10

SETTING OUT STRING LINES

Setting out profiles! Well we started off by setting out the pegs (paint marks) to our building lines

STEP 1

We started off by setting out our two first pegs which made our main building line which was 3m out from our "side boundary" and 2.5m out from the rear "boundary" and was 16.06m long.The main building line is a fixed line (should not be altered) and therefor gives a point to work off.

STEP 2

Then we moved onto the third peg which we found by measuring 7.5m from one of the established pegs and 17.725m from the other peg where these two measurements met was the position of our third peg

STEP 3

We could than start on setting out our fourth peg, we found this by measuring 16.06m from our third peg parallel to our main building line, 7.5m perpendicular from main building line and 17.725m diagonal from the remaining peg on the main building line, all of which should have met at the same point at to which was our fourth and final peg.\

STEP 4

We than extended 2m at each end of each line to which we placed pegs and fastened string lines, this than formed our building lines. Once we had our string line up we could then go over and double check our measurements which were 16.06m and 7.5m parallels and 17.725 diagonals.


NOTE 1: You aren't always given the diagonal and therefor may have to find it your self. This is found by using the method of A squared plus B squared equals C squared, A (16.06)and B (7.5) being the two perpendicular (90*) lines and C (17.725) the diagonal. This method is used for gutting two lines square (90*) to each other.

NOTE 2: Usually when your finding your building lines the plan will have more than two "maybe" up to 4 measurements in from the boundary line to your building lines.

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