How to find around on Campus Irchel

The numbers of the buildings indicate whether the building is located to the right or left of the central axis and in which series the building is located. Underground buildings are also numbered. To the left of the central axis are the buildings with numbers of 10/30, 50, to the right those with numbers of 20 and 40. 
The designation of buildings and rooms follows this scheme:
Y10 G23
Y = Campus Irchel
10 = building number
G = floor number
23 = room number
The passage from one building to the next is always possible on floor G.