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FUTURISTIC PLUMBING
� Basic of drainage systems
� Sovent single stack drainage system
� Basic of sanitary acoustic
� Low noise solutions
� Important factors during planning
� Prewall Installation
September 18, 2010
Content
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Everything revolves around water and sanitary technology
Overview
No water
consumption
12 liters of water
per flush
Choice of either
6 or 3 liters of
water per flush
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Basic Drainage System
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Requirements for drainage systems
� Hydraulic (blockages, self syphonic gurgling sound!!)
� Corrosion resistant
� Temperature resistant
� Good mechanical strength
� High durability
� Low sound influence
� Easy and safe to install
Basic of Drainage Systems
The main requirement of the drainage system is that waste and soil
water (solids and liquids) should be carried away quickly, quietly, without
blockage and without the escape of foul air into the building
Sanitary Plumbing Services, B H Clark
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Elements in drainage systems
- Solids
- Air circulation
� Air
� Solids
� Water
MOST IMPORTANT AIR!!!1 m3 WATER requires 20 – 35 m3 AIR
Air
- Water
Basic of Drainage Systems
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Hydraulic: Filling ratio h/d of horizontal pipes
Appropriate size and gradient of discharge pipe
h/d 0.5 – 0.8 h/d below 0.5
Insufficient flow efficiency
blockages
Sufficient flow efficiency
h/d above 0.8
No air circulation
self syphonic
h
d
No Air
Waterh
d
Air
Waterh
d
Air
Water
Basic of Drainage Systems
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Air circulation and waterflow in vertical pipes
MOST IMPORTANT AIR!!!1 m3 WATER requires 20 – 35 m3 AIR
Max. velocity at a height of 35 m, approx.13m/sec
air
water
0
4
8
12
16
20
24
0 5 10 15 20 25 30 35
Real velocity in stacks
Theoretical velocity
Velocity in m/s
Height of
stack in m
2gh
-air c
ircula
tion
wate
rBasic of Drainage Systems
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Cause of negative-/over pressure in traps
Hydraulic in drainage systems
Backup of water seal due to connection in over pressure zone
over pressure
negative pressure
Siphonage due to negative pressure in the stack
Completely filled pipe = negative pressure
Self-siphonage of water seal due
to fulfil of connector pipe
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Sovent Single Stack Drainage System
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Simple and effective
Training facilities in Switzerland
Sovent: An innovative solutions
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Sovent development
World wide registration of patents
Start of studies at the Institute of Sanitary Installation
in Bern, Switzerland (Sovent Aerator Fitting designed by
Swiss Engineer Mr. Sommer)1958 – 1961
1961 – 1965
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Sovent Aerator Fitting
110 mm
75 mm
110 mm
75 mm
110 mm
110 mm
110 mm
Sovent: An innovative solutions
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How does it work ?
• Reduced flow of air
Max. 4,2 l/s (100 mm Dia)
Air
Water
• Hydraulic inbalance
Over pressure
Under pressure
Air circulation blocked
Conventional Drainage Systems in High Rise Building
Sovent: An innovative solutions
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How does it work ?
Max. 8,7 l/s (100 mm Dia)
Air
Water
• Higher discharge capacity
• Balanced performance
+ / - Pressure
Sovent Aerator Fitting
Sovent: An innovative solutions
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Function of Sovent system
� Eliminates hydraulic plug
� Limits the velocity of the air and waste flow
� Ensures venting action of the stack
and branches
� Combines branch and stack and
branches flow in an optimal way
� Provides multiple connection
possibilities with 1 single fitting
Sovent Conventional
Hydraulic closure air circulation blocked
Free air circulation
Sovent: An innovative solutions
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Performance of Sovent single stack system
� Negative pressure in the stackSovent limits the negative pressure by optimal venting and reduced flow velocity and prevents high water loss in traps
0
4
8
12
16
20
24
0 5 10 15 20 25 30 35
Real velocity in stacks
Theoretical velocity
Velocity in m/s
Length of
stack in m
2gh
H = 50 mm
Sovent: An innovative solutions
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Characteristic
Single stack system 110 mm
� Max. recommended floor levels 6
� Max. number of WC:
14 pcs or 4,2 l/s
Sovent: An innovative solutions
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Characteristic
Parallel ventilated system 110 mm
� Approx. 10 floors levels
� Max. number of WC:
30 pcs or 5,9 l/s
Sovent: An innovative solutions
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Characteristic
Fully ventilated system 110 mm
� Approx. 50 floors levels
� Max. number of WC:
50 pcs or 7,6 l/s
Sovent: An innovative solutions
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Characteristic
Sovent system 110 mm
� Single stack
� Higher capacity
� Only 1 Sovent fitting per floor
� No parallel vent
� No back-vent
� Approx. 50 floors
� Max. number of WC:
73 pcs or 8,7 l/s
Sovent: An innovative solutions
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Discharge unit
0.5
DU
WASHBASIN
0.8
DU
2.0
DU
2.5
DU
URINAL
direct
BIDET SHOWER
(without plug)
KITCHEN-SINK BATHTUB BATHTUB SHOWER
(with plug)
WC-WALL-HUNG 6 l WC-FLOOR-
MOUNTED 6 l
WC-WALL-HUNG 9 l WC-FLOOR-
MOUNTED 9 l
FLOOR DRAIN FLOOR PAN 9 l
∅∅∅∅ 56 ∅∅∅∅ 56 ∅∅∅∅ 56 ∅∅∅∅ 56
∅∅∅∅ 63 ∅∅∅∅ 63 ∅∅∅∅ 63 ∅∅∅∅ 63
∅∅∅∅ 90 ∅∅∅∅ 90
∅∅∅∅ 110 ∅∅∅∅ 110 ∅∅∅∅ 110 ∅∅∅∅ 110
Sovent: An innovative solutions
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Design features of Sovent single stack system
� The simultaneous flow is a function of the number of discharge units installed
� The simultaneous flow is calculated with the formula:
0,5 x square root of the total of all discharge units
� Maximum stack loading of Sovent system
[l/s]Qs = 0,5 x ∑∑∑∑ DU [l/s]Qs = 0,5 x ∑∑∑∑ DU
Diameter Loading max. Qs
DU Stack Vent l/s
302 100 100 8,7
Sovent: An innovative solutions
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Calculation Example
� Building details
- 21 storeys apartment building
- 2 apartments per floor
- Room height 3.1 m
� Appliances per apartment
- 1 Bathtub
- 2 Washbasin
- 1 WC (6l)
� Piping Material is HDPE
Sovent: An innovative solutions
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Calculation Example
� Calculation with conventional method
Qty Appliance DU Total
DU
1 Bathtub 0.8 0.8
2 Washbasin 0.5 1.0
1 WC (6l) 2.0 2.0
Total DU per Apartment 3.8
Total building: 3.8 DU x 2 apartment per floor x 21 storeys = 159.6 DU
K factor = 0.5 for residential building
0.5 x (√159.6) = 6.3 l/s
Sovent: An innovative solutions
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Calculation Example
� Concept
- 1 Stack as the flow rate is below 8,7 l/s
- Stack is vented over the roof
- Pressure relief line at the end of the stack
Sovent: An innovative solutions
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Solution with ProPlanner
Sovent: An innovative solutions
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Sovent in practice
How to connect a Sovent fitting
� The Sovent fitting is made of HDPE
by blow moulding procedure
� Stack connection by electro welding
sleeve or butt welding dimension
110 mm
� Branch connection
3 x 110 mm
and
3 x 75 mm
by cutting off the required end and
welding a connection pipe
Sovent: An innovative solutions
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Advantages
� Sovent system � Conventional
Sovent: An innovative solutions
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� Software for calculation and material list
Summary: Sovent Single Stack Drainage System
Better performance for less money!!!
� Simplifies the design of domestic waste/soil water stacks
� Reduces the pneumatic and hydraulic pressure
� Space saving solution
� No vent/back pipes required
� Less pipes and fittings
� Smaller pipe diameters
� Faster and easier installation
� Ideal for pre-fabrication
� Proven technology since 1962
� Cost saving in construction
Sovent: An innovative solutions
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Testing, Standards and Approvals
� European standard DIN EN 12056-2
� Tests for the development of the basic idea of Sovent at the Institute of Sanitary Installation in Bern, Switzerland
� Tests for the development of the Geberit HDPE Sovent fitting at the Geberit Hydraulic Testing Tower
� Research works at NBS USA on Sovent system performance of a single-stack DWV system
� Research works of CSTB France on Sovent system
� Approvals in France, Belgium and Germany
� US Standards for Sovent system in- Copper ANSI B16.43-1982- Cast Iron ANSI B16.45-1987
Sovent: An innovative solutions
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Silent-dB20
Sovent System and Silent-dB20
Drainage Systems
Sovent
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Sound insulation only where required
Sound solutions
Basics of sanitary acoustics
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What is noise?
� Noise is a sound that is perceived as
disturbing
� Noise is relative
Basics of sanitary acoustics
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Why is noise relative?
Basics of sanitary acoustics
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Perception of sanitary noises from other habitations
40 dB(A)
20 dB(A)
25 dB(A)
35 dB(A)
30 dB(A)
not or rarely disturbing
casually disturbing
too loud, unreasonable
not acceptable
Basics of sanitary acoustics
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Excitation of a wall byairborne sound
Excitation of a wall bysolid-borne sound
Airborne sound and solid-borne sound
Basics of sanitary acoustics
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Pipe layout for downpipes
� Downpipe in general
- The following noises can be distinguished:
fall noise of the water in all vertical straight pipes
impact noise of the water in all offsets and
bends
flow noise of the water in all horizontal straight
pipes
fall noise
impact noise
flow noise
Basics of sanitary acoustics
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Pipe layout for downpipes - Deflections with different inclinations
20 cm
20 cm
2 x 45° 2 x 30°
Sound level increase comparedto straight pipe: + 9 dB
Sound level increase comparedto straight pipe: + 7 dB
20 cm
2 x 15°
Sound level increase comparedto straight pipe: + 5 dB
Basics of sanitary acoustics
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Barium sulphate
High Density Polyethylene
PolyethyleneHDPE80 %
Barium sulphate20 %
PolyethyleneHDPE45 %
Barium sulphate55 %
� Mineral-reinforced PE (PE-S2)
⇒ More mass = sound absorption
Volume Weight
High airborne sound insulation
Low noise solution
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Noise protection through a system approach
Low noise solution
Embedding of Silent pipes
40 dB
20 dBSilent with
insulation hose
PE without
insulation tape
Silent with
Isol
30 dB
The real values depend on the actual construction situation!
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Silent is a system solution!
Low noise solution
Silent Drainage System
Silent pipe avoids air borne sound
Isol further reduces additional
airborne/solid borne sound
Silent insulation hose avoids acoustic
bridges
Silent fastening system ensures
decoupling of solid borne sound
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Installation of HDPE in concrete
Low noise solution
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Silent-dB20 sound behavior compared to cast iron
Low noise solution
Configuration Testing room Measurement results in dB(A)
According the test installation above the Fraunhofer Institut makes noise protection tests according to DIN EN 14366.
The measurements on the right side have been measured
behind the installation room in the room below.
Cast iron: results with lateral support, pipe clamp type Tyrodur
Silent-db20: results with Silent-db20 and Silent-db20 pipe clamp
Sile
nt-
db20
Castiron
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2.0 l/s
25 dB(A)
30 dB(A)
Incre
ased
req
uirem
ents
regard
ing
nois
epro
tection
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� Goal of the acoustical
insulation is to protect other living areas
� If there are great
demands on acoustical
insulation, it must
already be considered in the design
� Bathrooms, toilets and kitchens shouldn't adjoin to rooms in
need of protection of other habitations!
Important factors to be taken into consideration during planning
Acoustical and constructional optimal layout design
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The ultimate sound solution: PreWall Installation
Fixation for Prewall Installation
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Prefabrication in the workshop Ready for Installation
Prefabrication of complete Installation Elements
The ultimate sound solution: PreWall Installation
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Flushing and waste water noise Filling noise of the valve
Flu
sh
acti
vati
on
Comparison solid construction – dry wall construction
Important factors to be taken into consideration during planning
6 litretoilet flushing
Solid
Dry wall
Installation noise measurements
Time (seconds)
So
un
d level
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Comparison solid construction – dry wall construction
Solid construction
Brick-lined pre-wall
installation in front of
solid partition wall (180
kg/m2) with installation components for toilet
and washbasin
Noise level LIn in
the room diagonally
below:27 dB(A)
Dry wall construction
Pre-wall installation in front
of solid
partition wall (180 kg/m2)
with installation components
for toilet and washbasin
Noise level LIn in
the room
diagonally below:
18 dB(A)
Important factors to be taken into consideration during planning
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� Design freedom
- Modern bathroom layouts
- Attractive appearance
- Shelf creates additional space (PreWall application)
� Simplified Construction
- PreWall avoids excessive chasing of structure
- Cistern with frame offers pre-mounted connections
- Shortening construction time
� Added value
- High hygienic performance
- Prevention of sound transmission
� Economics
- Water saving
- Cost saving
- Low maintenance
Conclusion
The ultimate sound solution: PreWall Installation
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Creative solution
…and design and modern bathrooms to inspire our target group
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Complete Ownership
Training
GuaranteeProduct
functionality and quality
Supply
Futuristic Plumbing
A complete System
Design
Inspection
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PreWall Installation
A modern and stylish way to shape the future
Thank You!
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