What is Cribbing in Construction?Ĭribbing, also known as falsework, is a temporary structure used to support heavy loads during construction. Cribbing construction techniques can be both incredibly effective and incredibly dangerous if the necessary safety precautions aren’t taken. Cribbing (also called a “box crib”) is a popular practice among aerial lift operators, construction foreman, and other job site workers, and it is used in a variety of work situations.