🚽 Manning's Equation n=0.010 PVC Sewer Pipe GPM Flow & 2.0 FPS Self-Cleansing

Underground Gravity Sewer Slope & Flow Calculator

Calculate gravity sanitary sewer pipe flow capacity (GPM) using Manning's Equation for smooth interior PVC (n=0.010). Verify minimum 2.0 ft/second self-cleansing velocity and minimum invert drop slope per 100 linear feet under local utility standards.

1. Project & Operating Inputs

Sewer Pipe Main Run (Linear Feet)

Pipe Diameter (Inches e.g. 8" PVC)

Customer Bid Price per Linear Foot ($ / Foot)

SDR-35 Pipe, Trench Box, Bedding Stone & Labor ($ / Foot)

2. Financial Breakdown & Yield

MANNING'S GRAVITY SEWER SIZING

Turnkey Utility Job Gross Profit

Utility Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost