Structure and movement
This family organizes vertical-access equipment by mast arrangement: single, double and multi mast. The mast arrangement describes the structure, while the platform, base and setup footprint describe different parts of the equipment. Keeping these terms separate makes a series comparison easier to read.
A mast provides a vertical guide for the platform movement. For a project brief, describe the platform position, the task at that position and the path used to bring the equipment to the work area. The raised working arrangement and the folded movement arrangement are separate measurements.