Derrick is a lifting device structure with minimum of one guyed mast used to support the framework that is an apparatus consisting of a mast or equivalent member held at the head by guys or braces, with or without a boom, for use with a hoisting mechanism and operating ropes. (e.g., in a gin pole, which may be articulated over a load by adjusting its guys; supporting a drilling apparatus in an oil drilling rig)
Related Definitions in the Project: The Construction
