wavin AS+ User manual

Technical Manual
Wavin
AS+
for low noise
soil & waste drainage

2 Wavin AS+ Technical Manual Phone. [phone]
1. Wavin AS+ page 4
1.1. System description page 4
1.2. Field of application page 5
1.3. Chemical resistance page 6
2. Technical datasheet Wavin AS+ page 7
3. Acoustics page 8
3.1. Sound insulation by Wavin AS+ page 8
3.2. Noise calculation software page 8
3.2.1. Wavin soundcheck tool page 10
3.3. Sound-insulating performance page 11
3.4. About sound page 12
3.5. Noise page 12
3.5.1. Sources of noise in buildings page 14
3.5.2. How noise is measured page 14
3.6. Acoustic requirements page 15
3.7. Acoustic design page 16
3.7.1 . Advantageous layout page 16
3.7.2. Acoustic plumbing design page 17
4. Design of the waste water system page 18
4.1. Installation and layout principles for waste water drainage systems page 18
4.2. List of definitions according to standard page 19
4.3. Functional requirements page 21
Contents

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Wavin AS+ Technical Manual
5. Installation and jointing page 44
5.1. Connecting Wavin AS+ to fittings and pipes page 44
5.2. General bracketing rules page 50
5.2.1. Bracket fixing instruction page 50
5.2.2. Bracket arrangement page 50
5.2.3 . Max length of threaded rod page 52
5.2.4. Extended wall distance page 53
5.3. Low noise installation – bracketing types page 53
5.3.1. Low noise bracketing – single bracket page 54
5.3.2. No noise bracketing – double bracket page 55
6. Fire protection page 56
6.1. Fire behavior classification page 56
6.2. Fire resistance classification page 56
6.3. Wavin fire protection concept page 57
6.4. Assembly instruction page 57
7. Packing, Transport & Storage page 62
8. Wavin AS+ Product Range page 63
Annex I Chemical resistance list page 78
Annex II Specification text page 81

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1.1. System description
With regards to noise, Wavin is one of the pioneers. More then
30 years ago Wavin introduced the world’s first plastic low
noise Soil & Waste system.
After serving its purpose for more then 30 years, Wavin is
introducing the successor of Wavin AS and is setting a new
standard for low noise Soil & Waste solutions.
Wavin AS+ is the new best in class plastic sound-insulating
Soil & Waste piping system, suitable for drainage of hot and
cold waste water and in accordance with all requirements for
non-pressurized waste water piping as laid down in DIN EN
12056 and DIN 1986-100.
Wavin AS+ reduces the noise level of the Soil & Waste system
better than any other plastic pipe system.
Due to the unique material composition for improved noise
performance, premium reduction of unwanted sound emis-
sions by the drainage system inside the building is assured.
Optimal sound reduction is guaranteed due to high density
of material.
Wavin AS+ is a mineral reinforced polypropylene (PP) low
noise soil and waste solution.
Wavin AS+ is available in sizes ranging from DN 50 to DN 200.
Like all plastics, Wavin AS+ is durable, corrosion-resistant and
able to withstand the chemical attack of all kinds of aggres-
sive waste waters.
Although the system has been primarily designed as sound-
insulating Soil & Waste solution, Wavin AS+ is also approved
for underground as far as the main sewer connecting point.
Supported by the DIN EN 12056 and DIN 1986-100 waste
water norms, which further endorse DN 90 downpipe specifi-
cations – from the individual waste water sources (facilities)
right up to the main drain cleaning access point or the main
sewage connecting point.
The new Wavin AS+ has been designed to meet the needs of
engineers and installers. On top of 30 years of experience, we
spent over a hundred thousand hours on noise level testing,
explored new materials and invested heavily in developing a
seal that needs no lubricant. This is why we can confidently
say that the ultimate noise reduction and super easy installa-
tion delivered by the new Wavin AS+ is no coincidence.
Wavin AS+ includes unique product features that are contri-
buting to the ease and safety of an installation:
New patented blue seal means no need to lubricate
Sculptured spigot reduces push-in force with
50% compared to Wavin AS
Blue seal’s shape guarantees leak-free, failure-proof
installation
Unique material, composition delivers, perfect sound
absorption
Angular rotation guidance to align and rotate fittings in
the right direction
Insertion depth check to make a secure and safe con-
nection
Better handling during installation due to the grip features
Compact design perfect for small and narrow spaces
Sealing
The elastomeric seal is made from EPDM in conformity with
EN681-1.
Approvals and testing
Wavin AS+ pipes and fittings are continually subject to
strict quality controls according to DIBt in Berlin. Wavin AS+
pipes & fittings have been awarded DIBt buildings’ inspec-
tion approval (DIBt Z-42.1-569) and are, therefore, deemed
suitable for use as above and below-ground pipework.
Germany: DiBt, Z.-42.1-569
1. Wavin AS+

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Wavin AS+ Technical Manual
1.2. Field of application
Areas of application
Wavin AS+ is resistant to hot water and fulfills or exceeds all
the requirements of DIN EN 12056 and the associated norms
given in DIN 1986-100, i.e. short-term exposure to tempe-
ratures of 95°C and long-term exposure to temperatures of
90°C.
The chemical resistance of Wavin AS+ makes it suitable for
transporting waste water in the range pH 2 - 12.
Wavin AS+ is suitable for building, roof and below ground
drainage purposes.
The outstanding acoustic performance of WAVIN AS+ makes
it ideal for wherever DIN 4109-compliant sound insula tion
might be required, such as in hospitals, hotels, nursing
homes, office buildings, or single/multi-occupancy residential
properties.
Noise pollution affects both health and behavior.
Exposure to noise can effect both health and behavior.
Unwanted sound (noise) can damage physiological health. It
can cause hypertension, high stress levels, tinnitus, hearing
loss, sleep disturbances, and other harmful effects. It is for
this reason that modern buildings are equipped with a range
of sound-insulation measures designed to favour comfortable
living, such as thick exterior walls and soundproofed win-
dows. But we often forget that noise is not just external; it
can also be generated from inside the building. Wavin wants
to create better buildings. Wavin AS+ is a premium-quality,
sound-insulating pipe system designed to minimise noise
from plumbing systems and maximise living comfort.
Commercial kitchens and abattoirs
Wavin AS+ is ideal draining fat-containing waste water from
e.g. commercial kitchens and abat toirs. Long-term functional
reliability and temperature resistance (continuous exposure
up to 90°C / short-term up to 95°C in accordance with DIN
EN 12056 / DIN 1986-100) are funda mental requirements
here. The smooth internal surface of the pipe prevents incru-
stations. When installing Wavin AS+ in commercial kitchen
and abattoirs with high fat-containing waste water, the use of
NBR sealing rings is advised. If fat-containing waste waters
need to cover a long distance before reaching the grease-trap
facilities, the premises have to be equipped with an auxiliary
electric heating system designed to keep the waste water in
a liquid state, while main taining a temperature of no more
than 70°C.
Photographic laboratories
Wavin AS+ pipes and fittings – made of mineral-reinforced
PP and supplied with factory-fitted sealing rings – are resi-
stant to the developing and fixing media used in photographic
laboratories over long-term exposures at 60°C. They are also
approved for short-term temperature loads of up to 95°C.
(Please refer to the Chemical Resistance List in the annex for
further details).
It is recom mended that piping is installed with sufficient fall
to reduce the contact time between fluid and guiding surface
to a minimum.
Dental practices
Wavin AS+ can be used unreservedly in dental practices,
provided the piping downstream of the dentist’s chair is fitted
with an integrated amalgam separator. Wavin AS+ (including
the sealing rings) is resistant to dental amalgam. In addition,
cleaning agents and disinfectants normally used in dental
practices, if present in the usual concentrations, are harmless
to the pipe system.
Food-processing and chemical industries
Usage with waste water containing lactic acid from the food
sector and chemical industry, Wavin AS+ pipes and fittings
are resistant to media containing lactic acid (at concentrati-
ons up to 90%) at liquid temperatures up to 60°C. This also
applies to the factory-fitted EPDM sealing ring that form part
of the push-fit connecting system, especially as contact is
marginal. It is recommended that piping is installed with suf-
ficient fall to reduce contact time to a minimum.

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1.3 Chemical resistance
The data in the chemical resistance list is intended only as a
guide for planning purposes and are not automatically appli-
cable to all conditions of use. Considerable deviations can
occur dependent on type of exposure and probable contami-
nation of the chemical medium. Wavin cannot be held liable
for any special, indirect or consequential damages irrespec-
tive of whether caused or allegedly caused by negligence. No
warranty can be derived concerning the data mentioned.
For the complete chemical resistance list see Annex I.

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Wavin AS+ Technical Manual
2. Technical
datasheet Wavin AS+
Wavin AS+ is a mineral reinforced polypropylene (PP) low noise soil and waste solution. A unique material composition for
improved noise performance. Optimal sound reduction is guaranteed due to high density of material. Optimized three layer
pipe structure for low noise levels push fit connections with a prelubricated elastomer seal (EPDM) for quick, easy and
reliable installation.
Material
Polypropylene, mineral-reinforced.
Physical properties
Density ~ 1,9 g/cm³
E-Modul ~ 1800 N/mm²
Linear coefficient of thermal expansion ~ 0,06 mm/mK
Reaction to fire DIN 4102, B2 and EN13501 D-S3, d0
Temperature Short-time load by 95°C und 90°C long-term stress
Color
Light grey RAL7035
Pipe data
DN d1) di2) s
3)
50 50 44 3,0
70 75 68 3,5
90 90 80,8 4,6
100 110 99,4 5,3
125 125 114,4 5,3
150 160 148,8 5,6
200 200 188 6,0
1) Outside diameter in mm
2) Inside diameter in mm
3) Wall thickness in mm
Marking
Wavin AS+, nominal width,, date, certification mark, material, fire class
Example: Wavin AS+, DN 100, date, Z.-42.1-569, mineral-reinforced PP Ü DIN 4102, B2
d
s
di
Project1:Layout 1 29-06-2009 10:00 Pagina 1

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3.1. Sound insulation by Wavin AS+
The excellent sound protection properties of Wavin AS+ are
primarily attributed to its thick-walled design as well as
special molecular structure and the high density of ~1.9 g/cm3
of the material. This property enables Wavin AS+ to absorb
airborne sound as well as mechanical vibrations.
A contribution to sound protection is made by the special
product design and system solutions.
Swept branches for minimal flow disturbance in the
down pipe.
Due to unique system bracket and high structure
born sound prevention
In studies conducted at the Fraunhofer Institut für Bauphysik
(Fraunhofer Institute for Building Physics), Stuttgart, Wavin
AS+ has proven its excellent sound absorption properties.
The tests were performed in a laboratory accredited by
the German Accreditation System for Testing (DAP, file no.
PL-3743.26) according to standard EN ISO/IEC 17025.
The measurements in this test were performed following
German standard DIN EN14366 and DIN 52 219:1993-
07; noise excitation by stationary water flow with 0.5 l/s,
1.0 l/s, 2.0 l/s., 3.0 l/s and 4.0 l/s.
3.2. Noise calculation software
Determination of the sound level as conducted by Fraunhofer
Institut Bauphysik is in general useful to determine the noise
level of a pipe system in a static situation. The test method
is, however, based on a laboratory set up in which all building
parameters are kept the same except for a change in water
flow. As a result it is impossible to obtain by this test a realistic
figure of the noise levels for the protect chambers of actual
projects.
Fig. 1: Double branch. Fig. 2: Wavin System
bracket.
3. Acoustics

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Wavin AS+ Technical Manual
To actually determine real noise emission of the pipe
system into a room requires a more dynamic test set up in
which at least the following parameters can be modified.
Pipe system characteristics
Building design
Shaft characteristics
Suspended ceiling criteria
Structural characteristics of the building
Flow parameters
Installation requirements
Insulation requirements
Fig. 3: FRAUNHOFER Test set up for determination of
the installation sound level in the laboratory.

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3.2.1. Wavin SoundCheck tool
Calculating system acoustic just got easier
With noise regulations continuously being updated, calculating noise levels to ensure your design meets requirements can be a
complex exercise. Wavin’s online SoundCheck Tool is designed to relieve some of that stress.
Unique to Wavin, the SoundCheck Tool simulates system acoustics in a final installation and calculates noise levels based on
individual parameters. In just four clearly defined and intuitive steps, you can get the answers you need to see if your design meets
regulations.

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Wavin AS+ Technical Manual
3.3. Sound-insulating performance
The excellent sound protection properties of Wavin AS+
are primarily attributed to its thick-walled design as well as
special molecular structure and the high density of ~1.9 g/
cm3 of the material used to make the pipes and fittings. This
property enables Wavin AS+ to absorb airborne sound as well
as structureborne sound.
Studies conducted at the Fraunhofer Institut für Bauphysik
(Fraunhofer Institute for Building Physics), Stuttgart, on Wavin
AS+ attest to its excellent sound absorption properties.
Wavin low noise bracket Volumetric flow rate* Meets standard
2 l/s 4 l/s
DIN 4109 (public minimum legal requirement) specification 30dB(A) 14 dB(A) 19 dB(A) ✔
VDI 4100 sound insulation level II/III specification 27/24 dB(A) 11 dB(A) 16 dB(A) ✔
Installation noise level in rear basement (P-BA 63/2019)
Wavin no noise bracket Volumetric flow rate Meets standard
2 l/s 4 l/s
DIN 4109 (public minimum legal requirement) specification 30dB(A) <10 dB(A) 13 dB(A) ✔
VDI 4100 sound insulation level II/III specification 27/24 dB(A) <10 dB(A) 10 dB(A) ✔
Installation noise level in rear basement (P-BA 64/2019)
With no noise
<10 dB(A) according to 63/2019
With low noise
14 dB(A) according to 64/2019
* Installation noise levels based on installation with Wavin system brackets.

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3.4. About Sound
Sound is a sensation felt, a perception of what takes place
around us, caused by various compression waves which
cross the eardrum and are captured and transformed by the
brain; it is composed of different frequencies. The acuteness
or intensity of the perception depends on the frequency and
range.
Sound is a wave that is:
Elastic (it needs a medium to be propagated)
Longitudinal (perturbation takes place parallel to the direc-
tion of propagation).
To exist it requires:
A source (vibrating body)
An elastic propagation medium (air, water, etc.)
A sound is therefore a method of transmitting mechanical
energy. To propagate, a sound needs a medium: any means,
whether solid, liquid or gassy, like air, is able to transport
sound, influencing its speed according to density.
Sound is propagated through the exchange of air-solid-air or
solid-air vibrations (in the second case the solid is the source
of the sound). With respect to soundproofing soil and waste
systems, we need to think in two different directions: (1) the
noise created in the pipes and transmitted by them and (2)
noise which is transmitted by the walls or surrounding media.
Sound is measured with a phonometer, an instrument which
filters noise and measures intensity at its different frequen-
cies. It is expressed in decibels.
The decibel is the logarithm of the ratio between the measu-
red sound pressure and a reference sound pressure, multip-
lied by ten.
dB = 10 log (P/Pa)
We need to remember that sound is an energy (just think
of when you stand in front of the stereo speakers and you
can “feel” the basses) but what we perceive is a processed
sensation.
The human ear is sensitive to pressure in a NON LINEAR
manner; therefore twice the pressure does not correspond to
twice the sensation.
The doubling of acoustic power corresponds to an
increase of 3 dB.
Every 10 dB increase is perceived by the human ear
as twice as loud (10 cars are perceived as twice as loud
as 1 car).
60 dB + 50 dB + 40 dB = 60.5 dB 
The highest dB is in a sum the most important
10 cars of 60 dB = 70 dB
= twice as loud as 60 dB
1 car = 60 dB
2 cars = 63 dB
Sound intensity follows an inverse square law with distance
from the source; doubling the distance from a noise source
reduces its intensity by a factor of four, or 6 dB.
3.5. Noise
Noise can be described as unwanted sound. In relation to
sound, noise is not necessarily random.
Acoustic noise can be anything from quiet but annoying to
loud and harmful causing permanent irreversible hearing
damage.

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Wavin AS+ Technical Manual
Based on the World Health Organization (WHO) guidelines,
European countries have maximized the noise level (in hou-
ses, apartments, hospitals, elderly homes, hotels, etc.) during
the night to:
LA max night = 30 to 35 dB(A).
Community noise (also called environmental noise, residential
noise or domestic noise) is defined as noise emitted from all
sources except noise at the industrial workplace.
In the European Union about 40% of the population is expo-
sed to road traffic noise with an equivalent sound pressure
level exceeding 55 dB(A) daytime, and 20% are exposed to
levels exceeding 65 dB(A). When all transportation noise is
considered, more than half of all European Union citizens
is estimated to live in zones that do not ensure acoustical
comfort to residents. At night, more than 30% are exposed to
equivalent sound pressure levels exceeding 55 dB(A), which
are disturbing to sleep. Noise pollution is also severe in cities
of developing countries.
In contrast to many other environmental problems, noise pol-
lution continues to grow and it is accompanied by an increa-
sing number of complaints from people exposed to the noise.
The growth in noise pollution is unsustainable because it
involves direct, as well as cumulative, adverse health effects.
For instance sleep disturbance: measurable effects of noise
on sleep begin at sound levels of about 30 dB. However, the
more intense the background noise, the more disturbing is its
effect on sleep. Sensitive groups mainly include the elderly,
shift workers, people with physical or mental disorders and
other individuals who have difficulty sleeping.
Table 2 presents the WHO guideline values arranged accor-
ding to specific environments and critical health effects. The
guideline values consider all identified adverse health effects
Fig. 4: Example of community noise.
Table 1: Guideline values for community noise in specific
environments (Source World Health Organization).
#1: As low as possible.
#2: Peak sound pressure (not LAF, max) measured 100 mm from the ear.
#3: Existing quiet outdoor areas should be preserved and the ratio of intruding noise to
natural background sound should be kept low.
#4: Under headphones, adapted to free-field values.

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for the specific environment. An adverse effect of noise refers
to any temporary or long-term impairment of physical, psy-
chological or social functioning that is associated with noise
exposure. Specific noise limits have been set for each health
effect, using the lowest noise level that produces an adverse
health effect (i.e. the critical health effect).
It is not enough to characterize the noise environment in terms
of noise measures or indices based only on energy sum-
mation (e.g., LAeq), because different critical health effects
require different descriptions.
It is equally important to display the maximum values of the
noise fluctuations, preferably combined with a measure of the
number of noise events. A separate characterization of night-
time noise exposures is also necessary.
For indoor environments, reverberation time is also an impor-
tant factor for things such as speech intelligibility. If the noise
includes a large proportion of low-frequency components, still
lower guideline values should be applied.
Supplementary to the guideline values given in Table 2, pre-
cautions should be taken for vulnerable groups and for noise
of certain character (e.g. low-frequency components, low
background noise).
3.5.1. Sources of noise in buildings
The noise generated by the building and its utilities may be
classified as follows:
Noise due to filling operations
Noise generated by control equipment
Intake noise
Discharge noise
Noise due to impact or shock
Noise is generated by moving parts or by flowing media.
Waste water discharge pipes are prone to vibration, particu-
larly where water flows through downpipes, or is forced to
change direction in joints and elbows (noise due to impact
or shock). Experience shows that the greatest problems
are typically caused by the transmission of structural noise,
particularly in the area of pipe clamps and brackets or where
pipe-work is run through walls or ceilings.
The noise created from waste systems obviously depends
greatly on the vertical piping. Here the falling water clashes
against the wall of the pipes and fittings. The generated noise
is transmitted directly to the pipes and indirectly through the
ducts and installation walls. Therefore, the thickness and
mass of the solid materials are of great importance, just like
the fixing brackets and other elements which connect pipes
to their supports.
3.5.2. How noise is measured
If we consider the “installation chamber” to be the room in
which the pipes are installed (generally the bathroom), the
room next door divided by the installation wall is called the
“protected chamber”. The noises emitted are measured in the
protected chamber according to EN 14366.
Fig. 5: Example of noise propagation during drainage.
Bathroom
Installation
chamber
Protected
chamber
Bedroom
<= 30 dB (A)
points of noise
propagation
<= 35 dB (A)

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Wavin AS+ Technical Manual
3.6. Acoustic requirements
Local ruling increasingly describe the maximum acceptable
sound level inside the living area of a building. Subsequently
such noise limitation will then have to be established in con-
tracts between the contractor and the awarding authority.
The following technical regulations contain relevant advice
and suggestions, which require a contractual agreement to
become binding.
Fig. 6: Example of areas requiring protection.
Fig. 7: Overview Noise Protection Standards and Guidelines.
Apartment B
Kitchen/Bath/Toilet
“Noisy room”
Apartment A
Kitchen/Bath/Toilet
“Noisy room”
Heating – Noisy room!
Area in need of protection / Apartment B
Area in need of protection / Apartment A
Shared floor/ceiling in residential apartment building > 410 kg/sq.m
Single-skin installation wall within domestic living quarters > 220 kg/sq.m
DIN 4109 Supplement 2:
This supplement contains instructions relating to noise levels
that lie 5 dB (A) below the values given in DIN 4109-1:20/6-07.
In accordance with DIN 4109 Supplement 2, increased levels
of sound insulation can be arranged, by agreement, to a maxi-
mum of 25 dB (A) in other areas requiring noise protection.
VDI 4100
In addition to the requirements of DIN 4109, which was adop-
ted as Noise Protection Level I (NPL I), this guideline contains
characteristic values for two additional noise protection levels
– NPL II and NPL III.
These two additional noise protection levels specify the arran-
gements for increased sound insulation.
A: DIN 4109 (minimum legal requirements)
B: DIN 4109 Supplement 2
C: VDI 4100 Noise Protection Level II
D: VDI 4100 Noise Protection Level III

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3.7. Acoustic design
3.7.1. Advantageous layout
An important factor for the assurance of acoustic insulation
is the design and implementation of an acoustically advanta-
geous layout.
The following measures have proven to be of significant
influence to the level of noise generated from the soil system
inside the building:
Noise-sensitive areas should be kept away, as far as
possible, from sources of noise
Non-sensitive areas should, wherever possible, be used
as “buffer zones”
Noise-sensitive areas should not be positioned in the
direct vicinity of bathrooms, toilets or stairwells
Potential sources of noise should be “bundled together”
in the same area
The comparison between the two examples of layout shown
above demonstrates how the acoustically advantageous lay-
out in the second example contributes to a clear reduction
in the acoustic pressure of the systems in the room which
demands acoustic insulation.
However, even using highly efficient low-noise waste systems
like Wavin AS+, one always has to seek for the best possible
acoustic decoupling. This goes for the whole drainage system
and its points of contact with the building (collars, crossings
through walls and floors, plaster residues between the pipe
and the building, etc…).
In designing piping, moreover, we need to avoid positioning
waste pipes in the partition walls between apartments. Special
noise-reduction measures also need to be adopted when
fixing drain pipes to the partition walls between apartments.
Protect the pipes from the propagation of intrinsic noise.
Apartment A Apartment B
Kitchen Bath
Area in need of protection
Apartment A Apartment B
Kitchen Bath
Area in need of protection
Room dividing wall Installation in own living room wall
The comparison of the floor plans above demonstrates how
good acoustic design in the lower building example can
significantly reduce the noise levels to which areas requiring
noise protection are exposed.
Fig. 8: Examples of good acoustic practice in building design.

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Wavin AS+ Technical Manual
When planning pipe installation, waste water discharge pipes
should not be allowed to run inside the walls separating living
areas. The attachment of waste water discharge pipes to
partition walls in living areas should only be carried out under
application of special noise protection measures. DIN 4109
requires that single-skin walls to which, or in which, water
installations or equipment (i.e. waste water pipes) are to be
attached must have an area-related mass of at least 220 kg/
sq.m. Walls having an area-related mass of less than 220 kg/
sq.m may only be used where prior testing has demonstrated
that the walls exhibit acceptable properties with respect to the
transmission of noise.
3.7.2 Acoustic plumbing design
Wavin AS+ can significantly reduce noise levels when compa-
red with other piping systems. However, when installing high-
performance sound-insulating waste water piping systems it
is still necessary to consider how effectively the system can
be sound-isolated. This applies to the waste water discharge
system as a whole, including its points of contact with the
building structure (pipe brackets and clamps, the running of
pipework through walls and ceilings, mortar droppings bet-
ween pipes and wall surfaces, etc.).
Pipe brackets and
clamps with structure-sound
isolating rubber strips.
Protect pipes against
structure-born sound
Fig. 9: Sound insulation of waste water systems.

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4. Design of the waste water system
4.1. Installation and layout principles for waste
water drainage systems
The technical aspects of waste water drainage systems have
been regulated in Europe for some time by an extensive set
of standards established in the course of ongoing European
harmonisation, started in 2001 with DIN EN 12056 (“Gravity
drainage systems inside buildings”).
This European drainage system standard consists of five
parts
Part 1: General and performance requirements
Part 2: Sanitary pipework, layout and calculation
Part 3: Roof drainage, layout and calculation
Part 4: Waste water systems, layout and calculation
Part 5: Installation and testing, instructions for operation,
maintenance and user
May 2008 saw the publication of the updated version of DIN
1986-100 “Drainage systems for buildings and provisions
for private ground [...] in relation to DIN EN 752 and DIN EN
12056”.
This standard contains additional technical requirements for
drainage systems, based on the earlier German standard DIN
1986, Parts 1+2, which were not incorporated into the DIN EN
12056 set of European standards.
The current version of the standard (from 2016) has been
reorganised into key points for better readability, including,
for example:
Basic requirements for the design and completion of
waste water and rainfall drainage systems
The installation of pipes inside and outside buildings
Requirements concerning the quality and quantity of
waste water
Backflow prevention
Sizing of waste water and rainfall drainage systems
DIN 1986-100 is therefore an extension of European waste
water regulations for application in Germany, with uniform
technical provisions for the design, construction, operation
and maintenance of drainage systems used for the disposal of
waste water in buildings and on private property.
For the sake of completeness, we also include other parts of
the above-mentioned DIN 1986.
Part 3:
Specifications for service and maintenance
Part 4:
Fields of application of sewage pipes
Part 30:
Maintenance of waste water drainage systems

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Wavin AS+ Technical Manual
4.2. List of definitions according
to DIN EN 12056
Waste water drainage system
Structural system for the collection, drainage, disposal
and treatment of waste water in buildings and on private
property.
Underground collector pipe
A non-accessible pipe, installed below ground or in the
foundations, for the disposal of waste water (normally via the
connecting sewer)
Collecting pipe
Horizontally installed pipe for the collection of waste water
from downpipes and connected lines not buried below
ground or installed in foundations
Downpipe
Perpendicular pipe for the collection of waste water from
individual and collective inlets. It directs the flow of waste
water to a collecting pipe or underground and collector pipe
Collecting connection pipe
Pipe designed to collect waste water from various single
connection pipes and direct it to a downstream pipe
Single connection pipe
Pipe from a sink drain or other drainage outlet, designed to
direct waste water to a downstream pipe
Bypass pipe
Pipeline for connection pipes in the retention area of a
downpipe offset or in the transition between a downpipe and
a collecting pipe or underground and collector pipe
Discharge unit (DU)
The average discharge rate of a sanitary appliance expres-
sed in litres per second (l/s)
Frequency factor
Variable to take into account the frequency of use of sanitary
appliance (dimensionless)
Waste water flow rate (Qww)
Total design flow rate from sanitary appliances in a drainage
system or in a part of a drainage system in litres per second
(l/s)
Continuous flow rate (Qc)
Flow rate of all continuous flows, e.g. cooling water, etc. in
litres per second (l/s)
Pumped water flow rate (Qp)
Discharge rate of waste water pumps in litres per second
(l/s)
Total flow rate (Qtot)
The total flow rate is the sum of the wate water flow rate
(Qww) and continuous flow rate (Qc) and pumped water flow
rate (Qp) in litres per second (l/s)
Hydraulic capacity (Qmax)
Maximum flow rate of air through a ventilating pipe or air
admittance valve, measured at 250 Pascal (Pa) pressure
drop, in litres per second (l/s)
Types of system
The many types of drainage system that currently exist are
a result of widely ranging areas of application for sanitary
equipment in different countries and the variety of technical
procedures and regulations that govern such systems.

20 Wavin AS+ Technical Manual Phone. [phone]
System I + II.
Fig. 10: Waste water drainage systems in Europe.
System III. System IV.
DIN EN 12056 classifies European waste water drainage systems into four types.
System I
Single downpipes with partly-filled connection pipes.
Sanitary drainage sources are joined to partly-filled connection pipes. These partly-filled connection pipes are designed
for a filling factor (h/d) of 0.5 (50%), and are in turn connected to an individual waste water downpipe.
System II
Single downpipes with partly-filled connection pipes.
Sanitary drainage sources are joined to connection pipes of reduced size. These connection pipes are designed for a filling
factor (h/d) of 0.7 (70%), and are in turn connected to an individual waste water downpipe. This configuration is used mainly
in Scandinavian countries. It is not used in Germany.
System lll
Single downpipe system with fully-filled connection pipes.
Sanitary drainage sources, which are linked via connection pipes and operated in a fully-filled state. These filled connec-
tion pipes have a filling factor (h/d) of 1.0 (100%). Each individual connection pipe is seperately connected to the downpipe.
System III is the preferred configuration in English-speaking countries. It is not used in Germany.
System lV
System with separate waste water downpipes.
Configurations corresponding to systems I, II and III can also be divided into a waste water downpipe that collects waste
from toilets and urinals and a waste water downpipe designed to collect waste water from all other drainage sources.
This configuration is mainly used in France. Its use in Germany is only possible to a limited extent.