Refer to the figure above. According to the Uniform Plumbing Code, the minimum size supply pipe “Y” is ____ IPS. Assume a gauge pressure of 4 oz. Pressure drop of .5 inche water column. 0.60 specific gravity of the gas. NOTE: 1000 Btu/ cubic foot.

Refer to the figure above. According to the Uniform Plumbing Code, the minimum size supply pipe “Y” is ____ IPS. Assume a gauge pressure of 4 oz. Pressure drop of .5 inche water column. 0.60 specific gravity of the gas. NOTE: 1000 Btu/ cubic foot.