1. WADE HydroMax Siphonic Roof Drain System

2. WADE-HYDROMAX® The World is Awakening to a New Dawn in Drainage

3. DISCUSSION TOPICS ` History Of Siphonics
Development of Standards / Codes
Principles of Gravity and
Siphonic Drainage
HOW DOES WADE-HYDROMAX WORK
Examples

4. Siphonic Drainage History
Concept invented in Finland by Olavi Ebling with first major installation in Sweden in The Knowledge Base has remained in Europe
European University & Governmental Research together with Industry Developments have seen the technology advance
Technical and Commercial benefits have led to the spread of the technology throughout Europe and Asia

5. HYDROMAX® Development
Both Roof Drain AND Software Independently tested by Hydraulic Research Center Wallingford (HRW) for compliance to the performance requirements of BS EN

6. ASPE 45 Siphonic Standards
IPC and UPC Codes permit Engineered Systems
(Drain Performance Standard)
ASME/ANSI Siphonic Roof Drain Standard published in 2005
(System Design/Performance Standard)
ASPE 45 Siphonic Drainage Design Standard
improving upon European Standards

7. Traditional Gravity Drainage Systems?
Why Change from
Traditional Gravity Drainage Systems?
Traditional Gravity Drainage Systems Do work, However…..
They are
Extremely Inefficient

8. Principles of Gravity Drainage
Vortex motion
Gravity drainage requires a large amount of Air to move a small amount of water.
Extremely Inefficient

9. Restricting Factors within
Gravity Systems:
1. The water flow-rate is dictated by the available GRADIENT.
2. Multiple rainwater down pipes in locations dictated by the hydraulics of the gravity system rather than the DESIGNER.
3. The only driving force is the limited depth or ‘HEAD’ of water above the
roof drain.

10. “High Performance” Gravity Drain
10” Drain – Depth = 7.3” to Discharge 1500 GPM

11. Principles of Siphonic WADE HYDROMAX®
Eliminate Air Ingress
Pipes run Full-Bore with Water
High Self-scouring Velocities
Extremely Efficient

12. 5” WADE-HydroMax® Drain–
Discharging 1500 GPM
Depth = 3.4”
WADE-HydroMax® 5” Drain
Saving 4” of
Ponding

13. Typical Traditional Gravity Drainage System
Extensive Below Grade Drainage
Numerous Down pipes
Drainage under Building Floor
Typical Traditional Gravity Drainage System

14. WADE HydroMax® Siphonic Roof Drainage system
High Performance WADE HYDROMAX® Roof Drains
REDUCED ROOF PENETRATIONS
Chosen, Convenient Down pipe Positioning
Significant Reduction in Below Grade Drainage
WADE HydroMax® Siphonic Roof Drainage system

15. PRINCIPLES Of
Gravity
and
Siphonic Drainage
(Negative Pressure)

16. Positive Pressure PAtmos gh As the water depth increases –
so does the flow rate
PAtmos gh

17. Positive Pressure PAtmos gh
This is due to the increase in positive pressure at the pipe entry.
PAtmos gh

18. Siphonic Drainage - How it works
Negative Pressure
A simple siphon
(Dad’s Car)
Head driving
flow
Flow out

19. Siphonic Drainage - How it works
PAtmos
- gh
The siphonic pipework acts in a similar way but in reverse.
The inducer on the roof drain prevents air ingress to the pipe work. The negative pressure increases with height of the building

20. Siphonic Drainage - How it works
PAtmos
- gh
The greater the negative pressure the higher the flow rate in the system.

21. Horizontal collector pipe
Tailpipes primed
roof drain
Roof
Pressure
Tail-pipes
Horizontal collector pipe
Drop pipe
Discharge

22. Siphonic Drainage - How it works Gravity flow in pipework
Priming of main pipe work
Stage 1 - Wavy flow (Typical Gravity Flow)
Air above water
Gravity flow in pipework

23. Siphonic Drainage - How it works
Priming of main pipe work
Stage 2 - Plug flow
Plug of water filling whole pipe at high velocities which achieves self-scouring.
Air pockets driven down pipework
Test have shown that self-scouring is achieved at as low as
10% to 15% of the Design Rainfall Rate.

24. Siphonic Drainage - How it works Water filling whole pipe
Priming of main pipe work
Stage 3 - Bubble flow
Water filling whole pipe
Air bubbles in suspension
at high velocity

25. Siphonic Drainage - How it works Water Filling ENTIRE Pipe
Priming of main pipe work
Stage 4 - Full-bore flow
Water Filling ENTIRE Pipe

26. Siphonic Drainage - How it works Horizontal Carrier Pipe
Fully primed
roof drain
Roof
Pressure
Tail-pipes
Horizontal Carrier Pipe
Down pipe
Discharge

27. Review of Technical Benefits of the Siphonic Roof Drainage System
WADE HYDROMAX®
Siphonic Roof Drainage System
1. Smaller Diameter pipe work is installed
Horizontally without GRADE.
2. Fewer and Smaller Diameter Pipes run
full-bore with self-scouring properties.
3. A significant Reduction in Below Grade Drainage (common range is from 20% to 60%).
4. Rainwater down pipes
Routed to the Engineer’s Preferred Locations
which frees up valuable building space.

28. 5. Routing of rainwater down pipes to the perimeter of buildings Eliminates Below Grade Drainage Under the Building Floor.
6. Easy co-ordination of services due to pipe work running level.
7. Fewer pipes = Reduced construction time and cost.
8. Ability to route rainwater pipes to
pond retention/water recycling.
9. Siphonic can be used for Engineer defined
Controlled Flow and/or Controlled Discharge

29. WADE-HYDROMAX® The World is Awakening to a New Dawn in Drainage

30. DESIGNED TO FUNCTION USING WADE-HYDROTECHNIC©
INDUCER
(Baffle Plate / Fins)
Eliminates Air From Entering Pipe System
WADE-HYDROMAX® Cast Iron Drain
Clamping Collar
Body
UnderDeck Clamps / Bearing Pans
DESIGNED TO FUNCTION USING WADE-HYDROTECHNIC©

31. HOW DOES IT WORK WADE HYDROMAX® Siphonic Drainage
The INDUCER Plate on our WADE HYDROMAX® Drain eliminates air entry to the pipe work
allowing the piping system to run
Horizontal and at Full Bore
to carry the rainwater
The elimination of air into the pipe work, together with engineered hydraulics, generates a High Performance Siphon
The entire height of the building is utilized as the driving force for this highly efficient
Rainwater Drainage Solution

32. THE DRAINAGE SYSTEM DESIGN
Why use WADE-HYDROMAX®
Siphonic Roof Drainage?
WADE-HYDROMAX®
is an Engineered Solution
THE ENGINEER CONTROLS
THE DRAINAGE SYSTEM DESIGN
WADE-HYDROMAX® offers
COST SAVINGS of
35% TO 65%!

33. WADE-HYDROMAX® 3”, 4”, 5”, 6” OUTLETS Over-Flow Dams Debris Dome
PRODUCT OFFERING
3”, 4”, 5”, 6” OUTLETS
Over-Flow Dams
Debris Dome
Parking Garage Drains

34. WADE HYDROMAX® Cast Iron Roof Drain Performance
3” Outlet Drain
( GPM)
ranging to
6” Outlet Drain
( ,800 GPM)
WADE HYDROMAX® Cast Iron Drain
Testing to ASME/ANSI Standard
on February 12-16, 2007

35. WADE-HydroMax Parking Garage Drain 3” and 4” Outlets

36. WADE HydroMax® Siphonic Solution
WADE HydroMax® Leader at High Level

37. WADE HYDROMAX® Siphonic Solution
Fire Sprinkler Service pipe
Tailpipe from
WADE-HYDROMAX®
Siphonic
Roof Drain
Horizontal Collector pipe
No requirement for down pipes
on every column

38. 280,000 ft² Warehouse Building
Rainfall Rate of 3” per Hour = 8600 GPM
Only 4 Vertical Rainwater Pipes of 8” or 10” Drain Main Roof

39. Traditional Gravity System 1600 feet Pipe work Diameters 6” to 18”
330 ft
WADE HYDROMAX® Solution
Only 1000 feet Pipe work
Diameters 3” to 8”
180 ft
WADE HYDROMAX®

40. Projects for WADE HYDROMAX®
Super Centres / Retail Chains
Stadium Projects
Retail Shopping Malls
Airports
Warehousing & Distribution Centres
Manufacturing Plants
Special Projects /Large Office Developments
High Rise Buildings
Apartment
Hospitals
Schools (CONTACT YOUR LOCAL SCHOOL BOARD)
ANY ROOF

41. WADE HYDROMAX® has achieved
GreenSpec® Listing
and can help gain
LEED’s POINTS
* ID Credit “Innovation in Design”
Reduction in use of raw materials
Reduction in Rainwater System Cost to offset cost of rainwater harvesting system otherwise not economical
SS Credit 5.1 – “Reduced Site Disturbance”
Reduced, shallower trenching
SS Credit 6.1 – “Stormwater Management, Rate & Quantity”
- Controlled Flow and Controlled Discharge
WE Credit 3.1 & 3.2 “Water Use Reduction”
Rainwater Harvesting
Sewage Conveyance and landscape irrigation

42. No Charge Siphonic Roof Drain System Design Software Available
WADE-HYDROTECHNIC©
No Charge Siphonic Roof Drain System
Design Software Available

43. Free Analytical Design Software Program
WADE-HYDROTECHNIC©
Free Analytical Design Software Program
Internet hosted software application
Always the most up to date version
Accessible from any computer or location
Enables Design in accordance with
ASPE 45 Siphonic Drainage Design Standard
Accurate Calculations available in either
metric or imperial

44. WADE-HYDROTECHNIC© Operating Parameters Out of Balance
Max / Min Velocity
Max / Min Pressures
System Fill Time

45. Design Choices Include a Variety of Piping
WADE-HYDROTECHNIC©
Design Choices Include a Variety of Piping
Systems
No-Hub Cast Iron
Schedule 40 Solid Wall PVC
Roll Groove Galvanized Steel
Roll Groove Copper

46. FACTS ABOUT SIPHONIC ROOF DRAIN DESIGN SOFTWARE
The key to siphonic roof drain software is a
system designed to conform with ASPE design standards
Siphonic roof drain systems are ENGINEERED SYSTEMS.
Siphonic software accuracy is dependent upon system installation
utilizing siphonic drains with equivalent “K” factors

47. TRIED - TESTED - PROVEN WADE-HYDROTECHNIC© Analytical Design Program
OVER 3,000 Siphonic Roof Drain Systems
SUCCESSFULLY designed by HYDROTECHNIC©
100% SUCCESS RATE
ZERO System Design Failures
TRIED -
TESTED -
PROVEN

48. Analytical Design Program
WADE-HYDROTECHNIC©
Analytical Design Program
$$$$ HOW MUCH $$$$
$0.00

49. PROVEN SUCCESS WHY USE WADE-HYDROMAX®
Partnership with 20 years EXPERIENCE
in Siphonic Roof Drainage Systems
TRACK RECORD OF
PROVEN SUCCESS

50. WADE-HYDROTECHNIC© SOFTWARE PROGRAM
HOW TO GET ACCESS TO THE NO CHARGE
WADE-HYDROTECHNIC© SOFTWARE PROGRAM
CONTACT
Greg Gillespie
OR VISIT