Most comprehensive set of recommended practices available for proper design and installation of custom fabricated architectural sheet metal. This user-friendly revised edition uses figure numbers not plates. It also contains master isometric roof plans keyed to details; new rainfall rates and roof drainage design data for scuppers, gutters and downspouts; revised roofing, flashing and copings; louvers; roof and wall penetrations; galvanic corrosion; ice dam control; wind uplift pressure test reports; metals selection data; model project specifications; and soft metrics.