The pdf is a new Foundation Plan - and site (200 acre cattle ranch) had grandfather - father built home we demolished. Site was best on the ranch and sentimental with about 12 - 50 to 100 year old oak trees planted by family. The old home and new homes have drilled and reamed piers under structural slab, and overlay was required to check for old piers in conflict with new.
We had footprint - pier locations of old foundation created on site at demo in a new SoftPlan drawing, and the pdf. All worked with image file import of pdf, but I did draw the PEs Foundation Plan with SP for future use, after posting this AM.
We moved new foundation (polygon footprint) 4 times on paper for best result – only of 17 of 52 piers in conflict (no problem with backhoe), while maintaining a safe distance from oak trees.
If I could figure out how to upload media to My Media - I could share a drawing or 2 for better understanding.