Drainage Design Spreadsheets

PIPE FLOW CALCULATOR

This spreadsheet uses the Colebrook-White and Manning Equations to calculate the flow capacity and velocity in pipes acting under gravity.

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Buried Pipe Design Spreadsheet

This spreadsheet can be used to design concrete, steel, plastic and other buried pipes in accordance with BS EN 1295-1.

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Manning Open Channel Design Spreadsheet

This spreadsheet uses the Manning formula to calculate the flow conditions in an open channel acting under gravity only.

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Runoff Calculator Spreadsheet

This spreadsheet calculates the design runoff flow for a site in accordance with the Flood Estimation Handbook.

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Linear Drainage Design Spreadsheet

This spreadsheet calculates the maximum flow from a specified linear drainage channel and checks whether the channel is sufficient for the specified site and storm conditions.

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Attenuation Design Spreadsheet

This spreadsheet calculates the requirements for a attenuation system and assists the user to design a suitable system.

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Soakaway Design Spreadsheet

This spreadsheet calculates the requirements for a soakaway system and assists the user to design a suitable system.

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Concrete Protection Slab

This detailed design spreadsheet designs a protection slab commonly installed to protect shallow pipes.

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French Drain Design

This spreadsheet completes French Drain Design in accordance with the SUDS Manual.

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Full Drainage Design Suite

Full drainage design suite (£80 Discount) including all 9 design  suites;

  • Pipe Flow Calculator
  • Buried Pipe Design
  • Manning Open Channel Design
  • Linear Drainage Design
  • Runoff Calculator
  • Attenuation Design
  • Soakaway Design
  • Concrete Protection Slab
  • French Drain Design

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