box crib

A box crib is the simplest, most stable and most common method of cribbing.

A triangle or A' crib is similar to the box crib, except it resembles a triangular prism instead of rectangular.

A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and rescue.

A tilted tower crib is a box crib in which pairs of shims are used to change the direction of the rising structure, resulting in a curve.

This can be accomplished using leveraging to lift the object, or cribbing (constructing a rectangular wooden framework known as a box crib underneath the object to be stabilized).

Moving the U-505 Time-lapse video showing box cribs used in relocation of the German submarine U-505 at the Museum of Science and Industry in Chicago.

With both types of jacking systems described here wood beams called cribs, cribbing or box cribs are stacked into piles to support both the structure and the jacks as the structure is lifted in increments.