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In House Rainwater Drainage Design

Within our design department, rainwater system technicians are dedicated to review and produce co-ordinated drawings in line with the client requirements for both siphonic and gravity drainage systems.

Dedicated software

RwpClearflow's independently approved design software allows rainwater systems to be calculated and balanced in line with BS EN 12056, giving the confidence the drainage systems will meet expectations and the specification requirements.

RwpClearflow software displays a range of information for the designer - maximum pressures, flow rates, discharge rates and pipe diameters.

The analytical calculations can be issued to each client alongside approval issue and construction issue drawings.

  • Experienced drainage design team.
  • Analysis to comply to BSEN 12056.
  • Approval up to construction issue drawings.
  • All designs backed up on and off site
  • PI insurance cover.

Get in touch

Find out what RwpClearflow can do for you.


0114 247 1800