5 Killer Quora Answers on 88car
https://www.evernote.com/shard/s703/sh/38d3a16b-8eb4-421d-5d1c-476179c95869/9e6a842235103054f56d2fc5a9de2db7
These drawings explain the small print of the objects supporting members, for instance beams and columns, which might be made via the structural engineer.