17
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.
