Rigid bottom
N J I T 
10 10 1 0
3
0 0 0 0 0 0 0
0 1500 0 0 0 1 0
120 1E6 0 0 0 1E6 0
60
60 60 1 1
1400 1E8
-1 1 1
0 10 20 2
20 80 12 10