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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This spreadsheet can be used to design concrete, steel, plastic and other buried pipes in accordance with BS EN 1295-1.
This spreadsheet uses the Manning formula to calculate the flow conditions in an open channel acting under gravity only.
This spreadsheet calculates the design runoff flow for a site in accordance with the Flood Estimation Handbook.
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.
This spreadsheet calculates the requirements for a attenuation system and assists the user to design a suitable system.
This spreadsheet calculates the requirements for a soakaway system and assists the user to design a suitable system.
This detailed design spreadsheet designs a protection slab commonly installed to protect shallow pipes.
This spreadsheet completes French Drain Design in accordance with the SUDS Manual.
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