A slab form is to be built for an 8-in.-thick concrete slab. The plywood sheathing face grain is perpendicular to the joists. The maximum allowed deflection is to be the smaller of 1/360 of the span or 1/8 in. Compare the maximum allowable joist spacing for class II ply form ½ in. thick and 1 in. thick. Draw a sectional view showing slab, sheathing, and joists.