Workshop Tools Hub/Plumbing

Plumbing Pipe Sizing, Slope Fall & Flow Rate

Size sanitary drainage pipes, calculate gravity fall slopes (cm/m, in/ft), flow rate velocity, and discharge capacity.

Pipe Sizing & Fall Configuration

Pipe Inner Diameter (mm)

Slope Gradient (%)

Total Drainage Run Length (m)

Pipe Material

Design Flow Condition

Material Unit Prices, Labor Rates & Markup

Pipe Price / meter

Fittings & Brackets Cost

Plumber Labor Rate / hr

Material Markup (%)

Suggested Client Quote

€492.00

Cost: €442.50

Materials: €247.50Labor (3h): €195.00

Total Vertical Elevation Drop

300.0 mm(11.81 in)

Gradient Fall Ratio 1:50

Discharge Flow VelocityOPTIMAL (Self-Cleaning, No Scour)

Discharge Flow Velocity1.43 m/s

Volumetric Flow Rate816.3 L/min

Discharge Flow Rate (GPM)215.6 GPM

Internal Pipe Water Capacity142.55 L (37.66 gal)

Total Pipe Water Wet Mass142.55 kg (314.3 lbs)

Calculation results, material estimates, and cutting diagrams are provided for preliminary guidance only. Always independently verify dimensions, safety tolerances, and statutory trade codes before fabrication or installation. CraftyBot assumes no liability for calculation discrepancies or execution errors. Terms of Service