[EricH]

Contiguous 8". Q&A has the following to say (among several other answers in the same vein:

Game - The Robot » Bumper Rules » R27
Q. Two teams have asked for the same information and you keep refering us back to the rules. If we have a U-shaped front on the bot can each leg be less than 8"? This appear to be an issue with rule R27. 8" required bumper from each eaterior vertice. Please clarify for multiple teams!
A. Per Rules [R27] and [R33] Bumpers must be at least 8 in. long and. and backed by rigid members of the Frame Perimeter on each end.

Game - The Robot » Bumper Rules
Q. Does the 8 in. of bumper required on each side of an exterior vertex have to be a continuous section or would multiple sections be legal as long as they totaled 8 in. per side? Can the “non-plywood backed” portion of the bumper mentioned in [G28] C be counted toward this 8 in. required by 4.1.6?
A. The 8 in. of Frame Perimeter immediately on either side of an exterior vertex must be covered by a Bumper.