Nope you've both misunderstood me

It would probably help if I show what I want to do using the actual map itself...
Here's what I've made so far of the round part of the building just using basic cylinders;
Now that part circled is the basic straight version of the structure used on the other parts you can see and it looks like this;
Now see below that is what I want to do with it, ignore how horrible it looks since I've just cloned and manually rotated the structure several times so it doesn't match up properly. I want to have it like that but have it properly aligned to the grid and matched up correctly... if that's even possible?