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Edited: 20230717_DL - moving from PDF to Evernote note, public sharing

Created: 20220223_PH

How can I check the drawing is georeferenced before I leave the office?

You can get an indication that the drawing is georeferenced by opening it in Autocad and see if the drawing coordinates appear to be in either of the following systems:

In Autocad you can ID POINT to get the coordinates of a point, or you can turn on Coordinates like this:

However, you can’t definitively check that the drawing is correctly georeferenced, until you go to site and stake out the boundaries.  If the boundaries are correct this is your conclusive check that the drawing is correctly georeferenced.

What is the difference between georeferenced and geolocated?

For surveying purposes, they can be considered synonymous

My drawing is not georeferenced, what can I do?

1. Use the GNSS rover to survey the site boundary.
2. Send the survey to the architect/designer.
3. Instruct him:
   1. Do NOT move the survey in Autocad
   2. Place the building(s) design on the survey
   3. Send the new drawing to the contractor for setting out.

Who should carry out the survey.

Under Conditions of Contract for Private Sector Building and Engineering Works Designed by the Employer v1 27Mar2020 (https://cif.ie/download/private-sector-contract-psc-for-building-and-engineering-works-designed-by-the-employer/) for building work in Ireland, the contractor is responsible for ensuring that the building is set out correctly.

Given this, it seems reasonable that he should carry out the boundary survey to ensure that this is so.

What should I survey when doing the boundary survey?