What is the process of stacking timbers in alternate tiers to support a heavy weight called?

The process of stacking timbers in alternate tiers to support a heavy weight is known as blocking. This technique involves arranging wood blocks or timber in a specific pattern to create a stable foundation that can bear load effectively. By alternating the layers of timber, the structure achieves greater stability and load distribution.

Across various construction and heavy lifting scenarios, blocking is crucial for ensuring safety and maintaining the integrity of a structure while loads are applied. It helps to prevent shifting or collapse under pressure. This method is commonly employed in construction and rigging to support equipment or materials temporarily, making it an essential skill for ironworkers and other related trades.

In contrast to the other options, shimming typically involves inserting thin pieces of material to adjust the height or level of an object. Bracing refers to adding structural supports to prevent movement or collapse. Jacking generally involves lifting a load using hydraulic jacks or other mechanical means, rather than providing structural support through stacking timbers.