(1)
Sheet metal roofing shall be not less than
(a)
0.33 mm thick galvanized steel,
(b)
0.46 mm thick copper,
(c)
0.46 mm thick zinc, or
(d)
0.48 mm thick aluminum.
Sheet metal roofing shall be not less than
0.33 mm thick galvanized steel,
0.46 mm thick copper,
0.46 mm thick zinc, or
0.48 mm thick aluminum.