Sewer Pipe Calculator vs Culvert Studio

Sewer Pipe Calculator designs and checks gravity sewer and storm drain pipes with the Manning equation for partially full circular pipes. Enter what you know and get what is missing. 6 GRAVITY CALCULATORS (FREE) • Velocity & Depth: flow, slope and diameter → velocity and water depth • Diameter from Flow: minimum diameter and the next commercial size from your catalog • Slope Range: minimum and maximum slope that meet velocity, depth and self-cleansing criteria • Minimum Slope & Diameter: when only the flow is known • Flow & Velocity from Depth: analyze an existing pipe • Flow Analysis: flow, velocity, hydraulic radius, h/D, Froude number and tractive force SELF-CLEANSING CHECK Tractive force τ = ρ·g·R·S next to the velocity, with a color verdict: self-cleansing OK or sedimentation risk. A pipe can meet the minimum velocity and still fail on tractive force. PIPE CATALOGS PVC, concrete, vitrified clay and corrugated HDPE (SI and US) with their Manning n and commercial diameters. PRO • Export any calculation to PDF and save/load calculations • Custom pipe catalogs STRUCTURES PACK Inverted siphon (automatic sizing), pump station (wet well volume, pump power, cycle times), weirs and overflows, minor losses and manholes, orifices and gates. FORCE MAIN PACK Total dynamic head with Hazen-Williams, economic diameter (Bresse) and water hammer (Joukowsky), with the TDH passed straight to the pump station. COLLECTOR DESIGNER Design a full sewer line segment by segment, like a spreadsheet: flow accumulates and invert levels propagate downstream, every segment is checked for velocity, tractive force, h/D, cover and surcharge, with a longitudinal profile and a PDF design table. SI and US units. English and Spanish. Works offline. For civil and sanitary engineers, designers and students working on sewer networks, storm drainage and simplified sewerage systems.

Culvert Studio is a free, educational showcase of our engineering-software capabilities — built to demonstrate the kind of tools we can create for professionals in civil engineering, drainage, stormwater, and hydrology. WHAT YOU CAN EXPLORE - Rational Method + Manning's equation for peak-flow and culvert sizing - Recommended culvert size, design flow, and velocity — in seconds - Inlet/outlet control analysis with performance curves and headwater checks - Multi-barrel, orifice, weir, and tidal-tailwater analysis for coastal culverts OFFLINE CANADIAN IDF DATA - 565 IDF weather stations across all 13 provinces and territories - 28,900+ data points — rainfall intensity/duration/frequency curves, fully offline - No internet required at the job site VISUALIZE & VERIFY - Interactive 2D/3D culvert profile with design-flow animation - Velocity, HW/D, and compliance checks against provincial drainage manuals (ON, AB, BC, SK, MB, QC) - Save projects and calculations; export reports as PDF or GeoJSON/KML MORE THAN A CALCULATOR - Bridge hydraulics, fish passage, detention, channel, and drainage-network tools - Environmental data integration: tidal (CHS IWLS), snow (ECCC), hydrometric (WSC) - Bilingual English / Français AN EDUCATIONAL DEMONSTRATION Culvert Studio is provided as an educational, experimental showcase of what we can build — not as a substitute for professional design software. Always have results verified by a qualified engineer. Built for Canadian conditions. Works offline. If you work in civil engineering, drainage, stormwater, or hydrology, we'd love to hear from you. Request a feature, suggest an improvement, or contact us about a custom solution.