🔥 NFPA 54 / IFGC (Weymouth Formula, 2-5 PSI Gas Risers, Appliance MBH Sizing)

High-Rise Natural Gas Piping Calculator

Size high-pressure vertical gas risers (2.0 to 5.0 PSIG Schedule 40 welded steel pipe) distributing natural gas across high-rise commercial buildings under NFPA 54 & IFGC: calculate compressible gas flow pressure drop using the Weymouth equation, determine branch line sizes to rooftop boilers and restaurant cooking equipment, and gas piping profits.

1. Project & Operating Inputs

Gas Riser Vertical Height (Feet e.g. 320 ft 28-Story Riser)

Total Connected Gas Demand (MBH e.g. 14,500 MBH Boilers & Kitchens)

Customer Bid Price for Supplied & Welded Sch 40 Gas Riser ($)

Welded Carbon Steel Pipe, Isolation Ball Valves, Certified Welders ($)

2. Financial Breakdown & Yield

NFPA 54 WEYMOUTH GAS PIPING

Turnkey High-Rise Gas Piping Profit

Mechanical Gas Piping Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost