The Fuel Gas Pipe Capacity & Pressure Ratio Estimator evaluates three-variable mechanical gas flow ratios, geometric root factors, and piping system efficiency metrics.

### Operational Formulas & Algebraic Ratio Model The interface processes three primary piping parameters: - **Calculated Gas Delivery Result**: $$\text{Result} = \frac{\text{Primary Flow Demand} \times \text{Operating Factor}}{\max(0.01, \text{Safety Loss Divisor})}$$ - **Root Factor (Geometric Mean)**: $$\text{Root Factor} = \sqrt{\max(0, \text{Primary Flow Demand} \times \text{Operating Factor})}$$ - **Flow Delivery Efficiency**: $$\text{Efficiency (\%)} = \min\left(100, \max\left(0, \frac{\text{Primary Flow Demand}}{\text{Primary Flow Demand} + \text{Operating Factor}} \times 100\right)\right)$$

### Worked Calculation Example Evaluating baseline mechanical piping parameters: - **Primary Dimension / Load (Flow Input)**: 100 - **Operating Coefficient (Pressure Factor)**: 20 - **Safety / Rate Factor (Loss Divisor)**: 5 - **Calculated Piping Metric**: $(100 \times 20) / 5 = 2000 / 5 = 400.00$ - **Root Geometric Value**: $\sqrt{100 \times 20} = \sqrt{2000} \approx 44.72$ - **Piping Efficiency Rating**: $[100 / (100 + 20)] \times 100 = (100 / 120) \times 100 \approx 83.3\%$

### Scope & NFPA 54 Fuel Gas Code Notice This utility calculates an algebraic ratio. For certified natural gas or propane installations complying with the National Fuel Gas Code (NFPA 54 / ANSI Z223.1), licensed plumbers must evaluate equivalent developed pipe length (including fitting resistance), gas specific gravity ($0.60$ for natural gas, $1.50$ for LP), and allowable line pressure drop ($0.5\text{ in. w.c.}$) against official NFPA capacity tables or the Spitzglass equation.

### In-Browser Processing & Privacy All formulas execute locally inside your browser memory. No plumbing layouts, appliance BTU loads, or building plans are uploaded to any server.