Siphonic Roof Drainage

With ten times the flow capacity of a conventional gravity system and significantly faster water removal rates, the Terrain Siphonic Roof Drainage System 'sucks' water from a roof to cope with downpours that would overwhelm a gravity system and is ideal for complex roof shapes. Offering valuable total project cost savings of typically 20-45% over a conventional system, our Siphonic Roof Drainage System can be factory prefabricated and gives important structural and space savings, with a reduced build programme. The Terrain system has a comprehensive range of roof drains for every flat and pitched...

Terrain Siphonic Roof Drainage System How it works Saving time and money The Terrain Siphonic Roof Drainage system ‘sucks’ water The 4 steps of water flow through a siphonic system from the roof, using a powerful hydraulic force created by water accelerating down the full height of the building to deliver far greater capacity and flow rates than a gravity system. In a gravity drainage system, pipework carries both air and water. The flow in gravity pipes is which enables the water to flow resulting in the need for larger pipes and more of them as well as extensive underground systems. 4 Traditional...

The roof drain and piping system The Terrain roof drain incorporates a one-piece inducer or air baffle plate, which becomes Terrain roof drains submerged in shallow water to exclude air. The height of the inducer above the body ensures the system primes rapidly with a minimum depth of water. KEY 1. Terrain roof drain body 2. Terrain inducer 3. HDPE stub flange connector Horizontal collector pipe Vertical downpipe 4. Neoprene gasket 5. Hex headed set screw 6. Full nut 7. Washer 8. Button headed cap screw 9. Flashing ring The inducer fins extend beyond the cover The roof drain is of a compact design...

This highly accurate and technically advanced software rapidly calculates rainfall and flow parameters for all kinds of pipework and buildings and provides pressure calculation results for compliance with BS 8490:2007. Design assistance The Polypipe Terrain technical support service can provide design assistance for any project on receipt of the following details: • Design rainfall rate or geographical location • AutoCAD drawings of roof and floor plans, both sections and elevations • Gutter profiles • Performance specification Technical support Polypipe offers a complete technical advisory service...

A Roof to River solution Regulations and climate demand integrated, intelligently designed water management systems, to control rainwater as close to source as possible. Polypipe provides a total solution ‘from roof to river’ enabling the specifier to choose a complete system from one manufacturer with one range of products, offering prefabricated systems using sustainable materials and processes. It’s a proven and integrated drainage solution for all requirements from roof collection to rainwater harvesting and storage, to recycling, soakaways and discharge, with a complementary range of pipework...

Polypipe Building Services New Hythe Business Park College Road Aylesford Kent ME20 7PJ Tel: 01622 795200 Fax: 01622 716796 [email protected] www.polypipe.com/commercial-building-services