Syphonic Rainwater Drainage Systems utilise special rainwater outlets and airtight pipework to promote full bore flow during heavy rainfall. These systems are now becoming popular especially for larger projects due to the cost and design benefits available compared to conventional roof drainage.
These benefits can include any or all of the following:
AQUATECH'S RAINWATER OUTLET
Downpipes are considerably smaller and/or fewer
Piping networks are generally smaller and can be laid level requiring less headroom and assisting with services co-ordination
Roof outlet numbers can often be minimised (especially below the building) normally giving consideralbe savings in cost and time.
Systems are designed to be self-cleansing and if maintained correctly and on a regular basis are normally trouble free.
The most significant component within any rainwater system is the roof outlet. The capacity of the outlet determines the flow in the rainwater pipe and the depth of water in the gutter or on the roof Rainwater pipes are dimensioned to operate at atmospheric pressure and with only one third to one quarter of the cross sectional area occupied by water. Each outlet has its own downpipe, which conveys the rainwater to the underground drainage system, the design of such gravity systems is relatively straightforward.
