R101       *ROBOT PERIMETER must be fixed. The ROBOT (excluding BUMPERS) must have a ROBOT PERIMETER, contained within the BUMPER ZONE and established while in the ROBOT’S STARTING CONFIGURATION, that is comprised of fixed, non-articulated structural elements of the ROBOT. Minor protrusions no greater than ¼ in. (~6 mm) such as bolt heads, fastener ends, weld beads, and rivets are not considered part of the ROBOT PERIMETER.

To determine the ROBOT PERIMETER, wrap a piece of string around the outer most parts of the ROBOT (excluding BUMPERS) at the BUMPER ZONE described in R405 and pull it taut. The string outlines the ROBOT PERIMETER.

Example: A ROBOT’S chassis is shaped like the letter ‘U’, with a large gap between chassis elements on the front of the ROBOT. When wrapping a taut string around this chassis, the string extends across the gap and the resulting ROBOT PERIMETER is a rectangle with 4 sides.

Figure 81 ROBOT PERIMETER example

Figure showing ROBOT PERIMETER example.