Cribbing

Last Updated 3 months ago

Table of Contents

Definition

Cribbing refers to the stacked wooden blocks—usually made of wood—that are used by the grip and rigging departments to level, support, and stabilize equipment on set. Commonly found on grip trucks, cribbing provides a reliable foundation on uneven or unstable surfaces and is essential for safe rigging of heavy gear, cranes, dollies, and vehicles.

Cribbing is a fundamental safety tool on any professional set.

What Cribbing Is Made Of

Cribbing blocks are typically:

Constructed from wood
Cut into uniform lengths for consistent stacking
Designed to interlock in alternating patterns for stability

Unlike wedges, planks, or apple boxes, cribbing is built for load-bearing applications.

Common Uses of Cribbing on Set

Leveling Equipment

Cribbing is used to level gear on uneven ground:

Dolly Track
Tripods
Lighting stands

It creates a flat, stable base where one doesn’t naturally exist.

Supporting Heavy Loads

Cribbing is essential when supporting:

Cranes and jibs
Generators
Base plates

The strength of cribbing allows it to bear significant weight safely.

Stabilizing and Securing Rigs

Cribbing helps prevent unwanted shifting or sinking—especially outdoors or on dirt, grass, or gravel.

Cribbing vs. Other Grip Support Tools

Heavy-duty
Used for leveling and stabilizing large equipment
Designed to bear weight
Stacks in alternating patterns

Wedges

Used for small adjustments or leveling lighter equipment

Apple Boxes

Versatile but not designed for heavy load-bearing

Shims

Thin pieces for micro-level adjustments

Each tool has its place, but cribbing is the go-to for serious stabilization.

Safety Considerations

Because cribbing is often used under heavy, potentially dangerous equipment, grips must:

Stack blocks in alternating “log cabin” patterns
Ensure blocks are free of cracks or rot
Use the correct number of layers to distribute weight
Confirm stability before allowing operators or crew near the rig

Proper cribbing can prevent major accidents.

Why Cribbing Matters

Film production relies on complex rigs and heavy machinery. Cribbing ensures equipment stays level and safe, protecting both crew and gear. It’s one of the most basic but essential tools in the grip department’s kit—and understanding how to use it is a must for anyone working in rigging or support roles.

Related Terms

Wedges – Smaller wooden pieces used for micro-adjustments.
Stingers – Electrical extension cables (often laid near crib stacks).
Condor – Lift used for overhead lights; requires cribbing for safe operation.
Base Plate – Foundation plate that often sits on cribbing.