Refer to the figure above. According to The Uniform Plumbing Code, the minimum size supply pipe “Z” is ____ IPS. Assume a gauge pressure of 0.5 ” water column. .60 specific gravity. NOTE: 1000 Btu per cubic.

Refer to the figure above. According to The Uniform Plumbing Code, the minimum size supply pipe “Z” is ____ IPS. Assume a gauge pressure of 0.5 ” water column. .60 specific gravity. NOTE: 1000 Btu per cubic.