The campus is a collection of buildings from different periods · concrete wings alongside sheet-metal structures, at heights and pitches that do not match. That makes for a more thorough survey than a single roof.
An orthophoto at roughly 1 cm is what lets you draw over the photograph rather than beside it. At that accuracy the air conditioners, antennas, flues and parapets are plainly visible · exactly the obstructions that decide whether a row of panels is buildable.
The drawing handed over carried dimensions for every roof, heights and pitches, and clearances to protrusions and obstructions · a package you can take straight into planning.
