Code Snap vs Gas Pipe Sizing Plumb

An all-in-one plumbing reference built for professionals who need fast, reliable code data on the job. Code Snap combines UPC & IPC tables, fitting take-offs, and water line sizing into a single streamlined app designed for real-world use in the field. Quickly access the plumbing data you rely on without digging through books or PDFs. Whether you’re sizing pipe, laying out a system, or verifying clearances, Code Snap provides practical, jobsite-ready reference you can trust. Subscriptions Code Snap offers multiple subscription options, including individual feature access or a single subscription that unlocks all tools. Available options include: • UPC & IPC – Core plumbing tables, data, and code references • Main Line – UPC & IPC water line sizing calculator • Fitting Take Off – DWV & H2O fitting take-off dimensions • Unlock All – Access to all Code Snap features A subscription is required to unlock full access to app content. Features • Quick access to core plumbing tables • Toggle instantly between UPC & IPC • Water main and branch sizing calculations • DWV and H2O fitting take-offs • Interactive instant results • Color-coded per national standards • Editable take-off values • One-handed, field-optimized interface • Share code and take off values What’s Included • Waste, water, and hot water tank sizing • Grease interceptor sizing • Meter, main, vent, and trap arm sizing • Pipe bracing requirements • Fuel gas BTU loads and pipe sizing • Medical gas sizing, codes, and pressures (UPC only) • Roof drain sizing (UPC only) • ADA restroom diagrams and requirements • Interactive wet venting diagrams (vertical and horizontal) Fitting Libraries • No-Hub Cast Iron • ABS & PVC Plastic • Pro-Press Copper • DWV Sweat fittings • H2O Sweat fittings • 90s, 45s, tees, flanges, wyes, combination fittings, fixture crosses, and more Important Note Code Snap is an independent reference tool created for plumbers and plumbing professionals, based on publicly available data and established code principles. It is not affiliated with or endorsed by IAPMO, ICC, or any regulatory authority. Always verify requirements with the Authority Having Jurisdiction (AHJ) for your project. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Gas Pipe Sizing Calculator helps you size natural gas and propane piping systems per the printed NFPA 54 (National Fuel Gas Code) / IFGC sizing tables. Instantly determine correct pipe diameter for black iron, CSST (corrugated stainless steel tubing), and semirigid copper piping based on BTU demand, inlet pressure, and pipe run length. Works for low-pressure, 2-psi, and 5-psi natural gas systems and low-pressure and 2-psi propane systems. Perfect for plumbers, gas fitters, and HVAC technicians. Works 100% offline on the job site. FEATURES - Dual Gas Support: Natural gas and propane (LP) each use their own printed NFPA 54 / IFGC capacity tables - no approximation multipliers - 3 Pipe Materials: Black iron (Schedule 40), CSST (by EHD flow designation), and semirigid copper with material-specific printed tables - Inlet Pressure Classes: Low pressure (under 2 psi), 2 psi, and 5 psi for natural gas; low pressure (11" w.c.) and 2 psi for propane (the code has no printed 5-psi LP tables) - Pipe Diameters: Black iron 1/2" through 4"; copper and CSST 1/2" through 2" (CSST capacities per conservative EHD for each nominal) - 10 Length Brackets: Pipe runs from 10 feet to 200 feet, rounded up per code practice - BTU Input: Enter appliance or total system demand in BTU/h - Result Note: Shows the exact NFPA 54 / IFGC table used for every result HOW IT WORKS 1. Select gas type (natural gas or propane) 2. Enter inlet pressure (low pressure, 2 psi, or 5 psi) 3. Input total BTU demand from gas appliances 4. Enter pipe material (black iron, CSST, or copper Type L) 5. Enter longest pipe run distance 6. See recommended pipe diameter with NFPA 54 capacity verification PERFECT FOR - Plumbers installing natural gas and propane systems - Gas fitters and propane technicians - HVAC technicians sizing gas furnace piping - Plumbing contractors and estimators - Mechanical engineers designing gas systems - Plumbing inspectors verifying system compliance OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: • Unlimited saved calculation history • PDF export of results • Dark theme • Ad-free experience STANDARDS & COMPLIANCE Capacities follow the printed NFPA 54 (National Fuel Gas Code) / IFGC Section 402.4 sizing tables: Schedule 40 steel (Tables 402.4(2)/(5)/(7) natural gas, 402.4(28)/(27) propane), semirigid copper (402.4(9)/(12)/(14) and 402.4(30)/(31)), and CSST by EHD (402.4(15)/(18)/(19) and 402.4(32)/(33)). Always confirm with your local code official and the tubing manufacturer table for CSST. PERFECT FOR - Plumbers and gas fitters - HVAC technicians and contractors - Propane technicians and installers - Plumbing contractors and estimators - Mechanical engineers - Code officials and inspectors OFFLINE & PRIVACY - Works 100% offline - no internet needed for calculations - No account required - instant access without signup - No data collection - all calculations stored locally - No tracking or cloud dependencies Part of PlumbTools Suite - professional plumbing and HVAC calculator tools. Size gas systems faster, eliminate sizing errors, and ensure full NFPA 54 code compliance with accurate gas pipe sizing calculations.