For a spreadsheet, of say anchor bolts, comparing asbuilt north, east, elev to design north, east, elev - Is there a convention for this?
My logic wants the delta values to tell me what I have to do to make things where they should be, hence design-asbuilt, but this seems contrary to most other peoples logic who want the delta values to indicate where you are in relation to where you should be, hence asbuilt-design.
The cutsheet in Carlson Survey allows either way, although it asks for "survey" points first and 'design" points second.
I'm prepared to mend by illogical ways, but I can't say I've ever seen it stated in any text book or survey software that it should be one way or the other.
Thanks
Existing condition minus design target equals difference is the way I have always done it.
All the contractor wants to know is how to fix it. So tell them the direction to correct the anchor bolt template. (Do not correct each bolt, only the template) Then show a detail of this on the plan. They don't want to think anymore than necessary.
Hopefully you are expressing relative to the column grid, not some iteration of North.