Re: Using transit to set corner posts square!!!
[re: MadMike]
07/01/08 04:39 PM
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I'd do it a little different cause you want remote points so you can reestablish the exact corner.
Assuming one has knowledge one how to operate a transit. [I've forgotten]
Start on site by measuring the proper distance and setting in pins or reference points. Call them point A and B
Set up on B, backsight on A and turn 90 degrees and measure distance to the next corner called C. Have board set up well behind C and make the 90 degree angle.
Set up on C, backsite on B, turn 90 degrees , measure the distance A to B from point C and set point D. Mark board well behind D.
Set up on D, backsite on C, turn 90 degrees and measure distance A to B. It should fall on the point A. Mark point on a board well behind A.
Continue till you have two boards well behind each corner that are marked. Later, when points A,B,C,D are lost just run string lines from the marked points on the boards and they will intersect over the four corners.
If you want to get fussy turn 90 degrees and mark. Then turn 270 degrees and mark. If the points do not coincide check transit level etc and repeat. If they still do not coincide split the difference or get another transit or sit in the shade and enjoy a cool drink till they are close enough!
Or turn 90 degrees and mark, invert transit and turn 90 degrees again. Points should coincide. If not split difference.
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