XD03.13 Industrial Rigging and Signaling Practice Exam

The most important factor when setting up cribbing is the weight and physical properties of the load. Cribbing must be sized and rated to carry the load’s gross weight, how that weight is distributed, and how the load will sit and behave during lifting or stabilization (shape, center of gravity, rigidity, contact areas). If the cribbing isn’t capable of supporting the weight or if the load concentrates pressure on small contact points, blocks can crush, slip, or fail, risking collapse or injury. So you choose cribbing with adequate rated capacity, place enough blocks to evenly distribute the load, ensure stable, level contact surfaces, and arrange them to avoid point loads and shifting. Color, branding, installation speed, and weather are secondary considerations and do not define the primary requirement for safe cribbing.