here's a crappy image i just made... and now i will explain the many locations.

(green - first floor, Blue - 2nd floor, Red - Outsidearea, Purple - Door System.)
1. Allied Spawn
2. Truck Way
3. Vent Way
4. Allied Spawn Hallway
5. Truck Room Door (a.k.a. Suicide Door, A.k.a. Hard way)
6. Long Hall
7. Ladder (well)
8. Truck Room (1st floor, 2nd floor, specify!)
9. Stairwell (truck room stairwell if problems can arise..)
10. Vent Room
---2nd Floor---
11. Outside Flag [Hallway]
12. Upstairs Hallway
13. Bridges (specify floor, ground, 2nd, top) (I myself call it the 'silo'...)
14. "Going Door 1", or Door1 Hallway
15. Flag Room
16. Room Before CR (control Room)
17. CR
18. Room After CR
19. Top Axis stairwell
---outside----
20. Blast Pit
21. Axis stairwell, Ground (door)
22. Far Catwalks
23. Crates (a.k.a. Boxes)
24. Catwalks (specify further by which door they are near, catwalks outside door1, catwalks outside door 2, etc.)
25. CR Crates (CR far crates, beyond blast pit, CR near crates, before blast pit.)
26. Barrels
---Door System--- (stand at crates and count them in order as if you were reading a book!)
door1 - 2nd Floor furthest left.
door2 - Coming from 'outside flag', top mid.
door3 - Door coming from 'Room Before CR'
door4 - door below door1, comes from vent room.
door5 - Bottom mid door, coming from Truck Room.
door6 - Bottom Right, coming from truck room
(ya, i purposely left out vents cuz thats an obvious one...) These are what me and my pals use. enjoy. ill try and do the other maps when i can!