Refer to the drawing. The drawing is a schematic to be used for pipe sizing only. Gas lines may not be run in walls, floors, partitions, or roofs. Gas supply of .5 PSI with a pressure drop of .5″ water column based on 0.60 specific gravity. What is the minimum size allowable for the section of pipe indicated at the letter “B”?

Refer to the drawing. The drawing is a schematic to be used for pipe sizing only. Gas lines may not be run in walls, floors, partitions, or roofs. Gas supply of .5 PSI with a pressure drop of .5″ water column based on 0.60 specific gravity. What is the minimum size allowable for the section of pipe indicated at the letter “B”?