Structure and movement
A self-propelled vertical mast lift combines a mast-guided platform path with a self-propelled base. The mast, platform and base have separate envelopes. Record the complete movement width and height instead of using a platform measurement to describe doorway clearance.
Describe travel to the work position and the vertical access task separately. The work point, platform position and obstacles beside the platform explain the access requirement. Doors, aisles, turns and floor transitions explain the movement requirement.