Ground poles & Threshold plates
Ground poles (typically 2″ round aluminum) are pinned to the foot base of each vertical pole. They lay on the ground around the perimeter of the canopy. These poles help stabilize the frame. Full height or 1/2 height skirts can be strapped to the ground poles.
Flat Threshold plates can be used in place of round poles for doorways. Safer for foot traffic and better for vehicles.