Siphonic Roof Drainage Introduction Siphonic Action Gravity vs. Siphonic Drainage Siphonic Drains Tailpipes Pipework LEED™ - Green Building Design Applications Why Siphonic? Siphonix® Software

Introduction Invented and patented 1968 by Olavi Ebeling

Introduction Invented and patented 1968 by Olavi Ebeling A fully engineered system based on hydraulic principles

Introduction Invented and patented 1968 by Olavi Ebeling A fully engineered system based on hydraulic principles Highly efficient

Introduction Invented and patented 1968 by Olavi Ebeling A fully engineered system based on hydraulic principles Highly efficient Use spread from Scandinavia, through Europe, Asia & Oceania

Introduction Invented and patented 1968 by Olavi Ebeling A fully engineered system based on hydraulic principles Highly efficient Use spread from Scandinavia, through Europe, Asia & Oceania System design simplified by current generation of software

Introduction Invented and patented 1968 by Olavi Ebeling A fully engineered system based on hydraulic principles Highly efficient Use spread from Scandinavia, through Europe, Asia & Oceania System design simplified by current generation of software Gaining ground in USA

Siphonic Action First use documented in ancient Egypt

Siphonic Action Created by a pipe completely filled with fluid with one end lower than the other

Siphonic Action Created by a pipe completely filled with fluid with one end lower than the other Gravity will cause the fluid to drain through the lower end

Siphonic Action Created by a pipe completely filled with fluid with one end lower than the other Gravity will cause the fluid to drain through the lower end Cohesive forces between water molecules ensures the pipe remains full

Siphonic Action The point of ingress must be higher than the exit point

Siphonic Action The point of ingress must be higher than the exit point The greater the height difference, the greater the capacity h

Siphonic Action The point of ingress must be higher than the exit point The greater the height difference, the greater the capacity The pipe must be completely full h

Siphonic Action The point of ingress must be higher than the exit point The greater the height difference, the greater the capacity The pipe must be completely full Friction has a big impact h

Gravity vs. Siphonic Systems Air Water In gravity systems, water adheres to the wall of the pipe Typically only 30% of the pipework is filled with water – 70% is air

Gravity vs. Siphonic Systems Air Water In gravity systems, water adheres to the wall of the pipe Typically only 30% of the pipework is filled with water – 70% is air Water In a primed & working siphonic system, 100% of the pipe is filled with water Pipework can therefore be significantly smaller

Gravity vs. Siphonic Systems Deeper water above outlet Clashes with other services Pipe with gradient Bigger pipe size

Gravity vs. Siphonic Systems Deeper water above outlet Clashes with other services Pipe with gradient Bigger pipe size Lower waterdepth above outlet Smaller pipe size Pipe runs level Easy coordination with other services

Gravity vs. Siphonic Systems Number of downpipes Significant underground work Intrusive piping

Gravity vs. Siphonic Systems Number of downpipes Significant underground work Intrusive piping Siphonic Fewer downpipes Minimised underground work High level pipes Horizontal pipes 21

Siphonic Drains Outlet: it’s just a controlled hole in the roof! Air baffle Roof drain (Outlet )

Siphonic Drains Outlet: it’s just a controlled hole in the roof! Siphonic action only occurs when the air baffle is completely submerged Air baffle Roof drain (Outlet ) 23

Siphonic Drains Dome strainers Air Baffle Air Baffle Air Baffle Outlet (various diameters for each manufacturer. No hub and threaded available)

Siphonic Drains Design & testing performed with CRM Drainage Consultants

Siphonic Drains Design & testing performed with CRM Drainage Consultants Full siphonic test rig

Siphonic Drains Design & testing performed with CRM Drainage Consultants Full siphonic test rig Conforms to ASME Standard A112.6.9-2005

Siphonic Drains Conventional Roof Drain

Siphonic Drains Siphonic Roof Drain

Siphonic Drains This is TESTING ONLY Pipes are NOT secured as they should be

Siphonic Drains Pipe System Priming

Tailpipes Connects the roof drain to the horizontal collector

Tailpipes Connects the roof drain to the horizontal collector Pipes must be vertical and horizontal – not inclined

Tailpipes Connects the roof drain to the horizontal collector Pipes must be vertical and horizontal – not inclined

Tailpipes Connects the roof drain to the horizontal collector Pipes must be vertical and horizontal – not inclined Expansion in the vertical plane should be avoided

Pipework Most materials are suitable Check ASPE Guide for details Cast Iron Ductile Iron Stainless Steel Galvanised steel Copper ABS HDPE PVC Check ASPE Guide for details Remember pressure is negative!

Pipework Pipes are installed horizontal & vertical

Pipework Pipes are installed horizontal & vertical Eccentric fittings should be used – where possible

Pipework Pipes are installed horizontal & vertical Eccentric fittings should be used – where possible Expansion in the downpipe should be avoided

Pipework Pipes are installed horizontal & vertical Eccentric fittings should be used – where possible Expansion in the downpipe should be avoided Branches are joined in the horizontal plane

Pipework Pipes are installed horizontal & vertical Eccentric fittings should be used – where possible Expansion in the downpipe should be avoided Branches are joined in the horizontal plane Underground pipes must be considered

On the roof

On the roof High water mark – midpoint between drains Secondary / Overflow Primary

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices”

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water Reducing energy consumption

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water Reducing energy consumption Reducing the depletion of natural resources and materials

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water Reducing energy consumption Reducing the depletion of natural resources and materials Creating a sustainable site

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water Reducing energy consumption Reducing the depletion of natural resources and materials Creating a sustainable site Use of innovative design

LEED™ - Green Building Design “Encourages and accelerates the adoption of sustainable green building & development practices” Conserving water Reducing energy consumption Reducing the depletion of natural resources and materials Creating a sustainable site Use of innovative design Improving indoor environmental quality

Siphonic Roof Drainage can gain points LEED™ - Green Building Design Siphonic Roof Drainage can gain points

Siphonic Roof Drainage can gain points LEED™ - Green Building Design Siphonic Roof Drainage can gain points Reduced site disturbance (SS Credit 5.1)

Siphonic Roof Drainage can gain points LEED™ - Green Building Design Siphonic Roof Drainage can gain points Reduced site disturbance (SS Credit 5.1) Controlled flow roof drainage (SS Credit 6.1)

Siphonic Roof Drainage can gain points LEED™ - Green Building Design Siphonic Roof Drainage can gain points Reduced site disturbance (SS Credit 5.1) Controlled flow roof drainage (SS Credit 6.1) Rainwater harvesting (WE Credit 3.1/3.2)

Siphonic Roof Drainage can gain points LEED™ - Green Building Design Siphonic Roof Drainage can gain points Reduced site disturbance (SS Credit 5.1) Controlled flow roof drainage (SS Credit 6.1) Rainwater harvesting (WE Credit 3.1/3.2) Innovation in design (ID Credit 1.1)

Applications Large footprint buildings! Warehouses Distribution Units Airports Sports Stadia Shopping Malls Factories

Why Siphonic? Greater efficiency Smaller pipes Fewer outlets Easier maintenance

Why Siphonic? Greater efficiency Lower groundwork costs Smaller pipes Fewer outlets Easier maintenance Lower groundwork costs Less underground pipework

Why Siphonic? Greater efficiency Lower groundwork costs Smaller pipes Fewer outlets Easier maintenance Lower groundwork costs Less underground pipework Reduced installation time Easier to install

Why Siphonic? Greater efficiency Lower groundwork costs Smaller pipes Fewer outlets Easier maintenance Lower groundwork costs Less underground pipework Reduced installation time Easier to install Greater architectural freedom Fewer downpipes Level installation of pipework

Siphonix® Software

Siphonix® Software

Siphonix® Software

Siphonix® Software 64

Siphonix® Software