6. Cut 2 × 4s for the ramp decking—the number needed depends on the length of the sloping sides of the stringers. Allow for a 1/8" gap between decking boards when calculating the number needed. 7. Attach the decking boards to the supports with 16d galv. nails or 3" deck screws, maintaining a 1/8" gap between boards. 8. Set the ramp in place against the shed and fasten it by toenailing through the end stringers and top decking board with 3 1/2" deck screws. Build the ramp with pressure-treated 2 × 8s and 2 × 4s, following the plan's size or building it to a custom size.