|
(2)
|
A vent pipe
that serves an oil interceptor, a
vent stack that is permitted by
Sentence
7.5.3.2.(6), a vent stack and a
stack vent shall each terminate
in an open air as set out in
Sentence (3).
|
|
|
|
|
(3)
|
The terminal
of a vent pipe shall be
located
|
|
(a)
|
at least 900
mm above or 3.5 m in any other
direction from air inlet,
openable window or door,
|
|
(b)
|
at least 150
mm above the roof of the building
where the vent is installed and,
where storm water is intended to
pond on the roof, at least 150 mm
above the high water level,
and
|
|
(c)
|
at least 2
000 mm above the roof of the
building that the vent is
installed in, where the roof is
intended for human
occupancy.
|
|
|
|
|
(5)
|
Where a vent
pipe is located 2 000 mm or more
above a roof, it shall be so
constructed as to be stable and
secure.
|
|
|
|
|
(6)
|
Where a stack
or vent pipe passes through a
roof or a wall, the stack or vent
pipe shall be equipped with a
flashing so installed that no
storm water can pass between the
structure and the flashing or
between the flashing and the pipe
or stack.
|
|
|
|
|
(7)
|
Flashing
shall be of material specified in
Article
7.2.10.14 and on a shingled roof
shall have a minimum dimension of
500 mm by 500 mm.
|
|
|
|
|
(8)
|
Where a
sleeve flashing is installed on a
flat roof it shall extend at
least 150 mm above the flood
level and on a sloped roof shall
be at least 150 mm high on the
short side.
|
|
|
|
|
(9)
|
No bore of a
vent stack or stack vent shall be
reduced or obstructed by the
installation of a
flashing.
|
|
|
|
|
(10)
|
Where a vent
pipe passes through a roof or an
outside wall of a building it
shall be increased to a minimum
size of 3" before penetrating the
roof or wall.
|
