Cut the five 2 x 4 x 12′ boards at a 60° angle across the midpoint of the board to make ten 6′-long rafters.ģ. Mark each rafter to describe a 30° angle from the horizontal end of platform.Ģ. From center point at one end of platform floor, mark rafter pattern to make A-shaped roof trusses. Shim level and firm to eliminate wobble.ġ. Leave loose and floppy so corn-hungry critters can’t get a foothold.Ĥ. As anti-rodent shield, cement (with roofing cement) sheet aluminum flashing on top of blocks so that it extends 3″ beyond all edges. Join board ends together at corners with nails and with right-angled metal corner ties located inside of joints.ģ. 3′-9″ boards to fit on edge snugly between ends of long side boards. Cut remaining 2″ x 6″ x 8′ into two approx.

Fasten (through ply) to underside of floor with 3″ nails or deck screws.Ģ. Locate 2″ x 6″ x 8″ PTs (standing on edge) along both long sides of plywood floor. Stack blocks two high if needed to rise at least 4″ above ground level (use mortar if three blocks high).ġ. Set concrete blocks at corners and midpoint of long dimension. With stakes, line level and plumb bob, dig soil surface at corners and at midpoint of long sides so hole bottoms are all on the same level plane.Ĥ. Dig out sod and loose topsoil inside rectangle.