Refer to Table 13-3 in the 1997 UMC. Use the installation information. Gas type: natural pressure Gas pressure: 80 Specific Gravity: 0.60 Pressure drop: 0.5″ water column Heating value:1,000 btu/h per cubic foot Appliance: warm airfurnace Rating:120,000 btu/ h System=natural convection appliance Location=50 feet from gas meter. What minimum diameter gas line is required for the supply to the furnace?

Refer to Table 13-3 in the 1997 UMC. Use the installation information. Gas type: natural pressure Gas pressure: 80 Specific Gravity: 0.60 Pressure drop: 0.5″ water column Heating value:1,000 btu/h per cubic foot Appliance: warm airfurnace Rating:120,000 btu/ h System=natural convection appliance Location=50 feet from gas meter. What minimum diameter gas line is required for the supply to the furnace?