Advanced Upgrading was inspired by this video clip [found by a Reddit user](http://files.facepunch.com/garry/2014/October/17/My Great Capture Clip 2.mp4).
Basically, you have to hit each building block based on grade to be able to upgrade it to that certain grade. For example, wood could be 10 hits, stone could be 20, sheet could be 30, and armoured could be 40. You would need to hit the building block 20 times to be allowed to upgrade that specific building block to...