What effect on rainwater discharge will the presence of a green roof have?
Green roofs absorb a significant amount of rainwater. Depending upon the depth of soil, up to 70% of rainwater may be retained and eventually evaporate, with only 30% actually discharging via the rainwater disposal system. Alumasc Technical Services can calculate the required rainwater disposal capacity in order to optimise the design of the drainage system. Rainwater can also be collected in a cistern to provide a source of water for irrigation purposes during dry spells, operated by a solar powered pump.
Related Questions
- What is the formula for determining the number of gallons of rainwater per square feet of roof space required for its conversion into harvested water?
- Is the rainwater run-off from a green roof connected to the surface water drainage system or the foul water/soil and waste system?
- How Do You Calculate Rainwater Discharge On The Roof And Its Pipe Size?
