Understanding Siphonic
What is a siphonic system?
Siphonic action in nature can be observed during an activity of draining water from a fish tank. A pipe or hose filled with water, with one end dipped into the water in the tank, and the other end discharging at a lower level. The water will fully fill the hose and stream naturally to the discharge point.
Siphonic in Rainwater System
Following this principle, the siphonic system developed as a rainwater system. The roof outlets and pipe configuration are designed following certain calculations, codes & standards so that can work as a safe & well-run siphonic system.
Comparison Gravity & Siphonic Rainwater System
A properly installed roof drainage system is one of the most important systems required in a building. There are two types of roof drainage systems available in the market i.e gravity (conventional) and siphonic system.
Conventional Roof Drainage Systems (Gravity Systems)
The gravity roof drainage system streams rainwater from the roof down through gutters, outlets, and downpipes. One disadvantage of this system is the vortex action, which draws air into the pipe system and significantly reduces 2/3 drainage capacity due to the large air volume.
Siphonic Roof Drainage Systems
The gravity roof drainage system streams rainwater from the roof down through gutters, outlets, and downpipes. One disadvantage of this system is the vortex action, which draws air into the pipe system and significantly reduces 2/3 drainage capacity due to the large air volume.
Key Advantages of Siphonic System
- Due to full bore Higher flow velocities in the pipe and produces corerrespondingly high flow rate if comare to gravity.
- Smaller gutter leads to gutter cost reduction. Dematerialization of gutter and support materials significantly reduces carbon emissions.
- Pipe size is about 1/3 of the gravity system's pipes. Reducing material up to 80%. Pipe & fitting dematerialization reduce carbon emissions by up to 80%.
- During the storm, the water level at the roof or gutter is lower compared with the gravity system.
- Horizontal pipe without a slope or zero gradients.
- Less underground drainage, less number of sumps (cost saving). No drainage inside the building. Concrete dematerialization significantly reduces carbon emissions.
- Less outlet penetration at the gutter or roof, reduce potential leakage.
- Less down pipe, less penetration to the wall, architecturally better.
- Total cost saving up to 35%
Siphonic System
