KB PLanning Application 18/02567/LBA Design and Access Statement (PDF, 152 pages, 33 Mb). Includes some history of the Kelvin building (start at page 69).
This document was reassembled from the parts found in the Glasgow City Council planning application 18/02567/LBA. Note there is also a slightly earlier application 18/02513/FUL which contains similar (identical?) information.