G60/90 galvanized steel frame designed in accordance with Florida building regulations. The steel frame construction of these Bahama homes, consists of galvanized steel studs 6 inches wide for external walls at 16-inch centres. These walls are braced and fixed to the concrete slab with Simpson straps on each stud. The second floor consists of “Trade Ready” 10 inch galvanized joists designed by Dietrich Engineering covered with 3/4-inch t&g tanalith pressure treated plywood to protect against termites, damp rot and dry rot. The roof structure is also of galvanized steel. The external walls and roof of the steel frame construction are clad with 5/8-inch pressure treated plywood, and filled with insulation, as are the ceilings.