However, in areas where climate, soil, and service conditions may create unusual external stresses on cast iron pipe, unreinforced taps may be used only on six inch or larger pipe.
Haw. Code R. § 6-77-46
However, in areas where climate, soil, and service conditions may create unusual external stresses on cast iron pipe, unreinforced taps may be used only on six inch or larger pipe.
Haw. Code R. § 6-77-46