LevelRight adjusts in two planes, up to 5 degrees each, for a total of 10 degrees in a single plane.
• The safe stacking height
• The interface between the cribbing and the supporting materials at the base( outrigger pad)
• The overall stability of the cribbed structure, including the relationship between the base and the top of the cribbing stack
Mitigate Instability
Stacking materials under stabilizers and outriggers increase the risk of instability. Here are some suggestions for mitigating instability.
The base of any cribbing stack must be large enough to reduce the imposed loads
to levels the ground can withstand or less than the allowable ground bearing pressure.
The bottom of any cribbing stack must be on a level surface or platform, and the bottom layer should be in full contact with the ground without any gaps between members.
Cribbing must always be vertical or at a 90-degree angle to a level surface. Never build a cribbing stack that is not at a right angle and then place shims or a leveling product on the top of the stack. Always establish a level surface before building a vertical stack.
Cribbing stacks should either be wider at the base than at the
October 2025 • www. thepartsconnection. org • 13