wingspread5

º = Nailed with 8d common nails, the standard construction technique. (S6-A1) • = Nailed with 8d nails and additionally, one #24 x 4½” flathead wood screw 3/8″ shank diameter) installed in a proper pilot hole. (S5-A1) Δ = Nailed and one #24 screw potted in epoxy. (S1-A1)