I got an urgent request from my local city to check the grading on a small parking lot project, as the contractor's surveyor isn't available.?ÿ The city's PM emailed improvement plans and the design engineer's CAD file.?ÿ The CAD file opened into paper space, and I saw 3 control points with a note that the points are referenced to SPC.?ÿ However, when I switched to model space I found the design in one area, the topo in another area 6.5 million feet away, and the city background map in yet a third area 1.6 million feet from the topo and 5.8 million feet from the design.?ÿ None of the 3 areas have the same orientation (i.e. they're all twisted from grid north by apparently random amounts), and none of them are on SPC coordinates.
Sheesh!
Time to punt.?ÿ Tell them to wait until the contractor's surveyor is available.?ÿ Unless this is paying work, rather than a favor.?ÿ Then start hitting the "cha-ching" button on your financial compulator.
P.S.?ÿ I just noticed that two of the control points have the same elevation.?ÿ I hope that's just a coincidence.
If the control is not 6.5 million feet from the as-built location then FAIL!
Easy money!
I have seen some pretty bad cad structure in my day but that is completely nuts.?ÿ I truly wonder how some of these people are still in business.
That used to happen frequently, cad operators have a company border and move and rotate the data to the border. The coordinate data lost to a border with 0,0 at the lower right corner (or maybe some random position). I've even been lectured by cad jockys about how this was the BEST method.
The idea of moving the border to the site never penetrated.
The contractor's surveyor has probably vacated his office and home, changed his name and has gone into hiding. ??ÿ
The idea of moving the border to the site never penetrated.
With the advent of paper space, it never needed to.
You might think paper space?ÿmight cure it, but it got way worse with the advent of paper space.
At least they would use the excuse of paper space for moving things.