Geberit-Seminar Futurist Plumbing

2

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

3

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

4

Basic Drainage System

5

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

6

Elements in drainage systems

- Solids

- Air circulation

� Air

� Solids

� Water

MOST IMPORTANT AIR!!!1 m3 WATER requires 20 – 35 m3 AIR

Air

- Water


7

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


8

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

9

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

10

Sovent Single Stack Drainage System

11

Simple and effective

Training facilities in Switzerland

Sovent: An innovative solutions

12

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

13

Sovent Aerator Fitting

110 mm

75 mm

110 mm

75 mm

110 mm

110 mm

110 mm


14

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


15

How does it work ?

Max. 8,7 l/s (100 mm Dia)

Air

Water

• Higher discharge capacity

• Balanced performance

+ / - Pressure

Sovent Aerator Fitting


16

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


17

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


18

Characteristic

Single stack system 110 mm

� Max. recommended floor levels 6

� Max. number of WC:

14 pcs or 4,2 l/s


19

Characteristic

Parallel ventilated system 110 mm

� Approx. 10 floors levels


30 pcs or 5,9 l/s


20

Characteristic

Fully ventilated system 110 mm

� Approx. 50 floors levels


50 pcs or 7,6 l/s


21

Characteristic

Sovent system 110 mm

� Single stack

� Higher capacity

� Only 1 Sovent fitting per floor

� No parallel vent

� No back-vent

� Approx. 50 floors


73 pcs or 8,7 l/s


22

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


23

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


24

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


25

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


26

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


27

Solution with ProPlanner


28

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


29

Advantages

� Sovent system � Conventional


30

� 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


31

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


32

Silent-dB20

Sovent System and Silent-dB20

Drainage Systems

Sovent

33

Sound insulation only where required

Sound solutions

Basics of sanitary acoustics

34

What is noise?

� Noise is a sound that is perceived as

disturbing

� Noise is relative


35

Why is noise relative?


36

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


37

Excitation of a wall byairborne sound

Excitation of a wall bysolid-borne sound

Airborne sound and solid-borne sound


38

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


39

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


20 cm

2 x 15°



40

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

41

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!

42

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

43

Installation of HDPE in concrete

Low noise solution

44

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

26

18

2.0 l/s

25 dB(A)

30 dB(A)

Incre

ased

req

uirem

ents

regard

ing

nois

epro

tection

45

� 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

46

The ultimate sound solution: PreWall Installation

Fixation for Prewall Installation

47

Prefabrication in the workshop Ready for Installation

Prefabrication of complete Installation Elements


48

Flushing and waste water noise Filling noise of the valve

Flu

sh

acti

vati

on

Comparison solid construction – dry wall construction


6 litretoilet flushing

Solid

Dry wall

Installation noise measurements

Time (seconds)

So

un

d level

49

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)


50

� 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


51

Creative solution

…and design and modern bathrooms to inspire our target group

52

Complete Ownership

Training

GuaranteeProduct

functionality and quality

Supply

Futuristic Plumbing

A complete System

Design

Inspection

53

PreWall Installation

A modern and stylish way to shape the future

Thank You!

Geberit-Seminar Futurist Plumbing

Documents

Transcript of Geberit-Seminar Futurist Plumbing