Refer to the commercial kitchen piping layout. Assume a gas pressure of .5″ psig, a specific gravity of .6, and a gas pressure drop of .5″ water column. What is the minimum size allowable for the 6` segment of piping between branch outlet “A” and branch outlet “B”?

Refer to the commercial kitchen piping layout. Assume a gas pressure of .5″ psig, a specific gravity of .6, and a gas pressure drop of .5″ water column. What is the minimum size allowable for the 6` segment of piping between branch outlet “A” and branch outlet “B”?