From: Effect of bolting on roadway support in extremely weak rock
Grade
Vertical load
Side load
1st
0.1
0.18
5th
0.5
0.74
2nd
0.2
0.36
6th
0.6
0.84
3rd
0.3
0.54
7th
0.7
0.94
4th
0.4
0.64
8th
0.8
1.04