3×6 pink ground protection boards 80 tons load capacity The dimensions of load area 1 are 4’x3.25′ and equals 13 square feet. The dimensions of load area 2 are 6’x3.25′ and equals 19.5 square feet. And since the deck is symmetrical, the load . Black 4' x 8' Ground Protection Mat, 80 Ton Capacity . Load bearing capacity up to 80 tons*.