mail@graf.info
www.graf.info
2.
Installation conditions
Mini telescopic
Maxi telescopic dome shaft +
Telescopic with cast iron lid
dome shaft
Covering heights with telescopic dome shaft in
750-950 mm
750-1050 mm
green areas
Max.
covering
heights
with
extension
and
max. 2000 mm
telescopic dome shaft
It is generally recommended that a drain line is
installed.
Covering heights with cast telescopic dome shaft
>800 <2000 mm
(with class B cast cover) in areas with car traffic
(load up to 3.5 t).
Covering heights with truck telescopic dome shaft
>800 <2000 mm
(with Class D cover to be provided by customer) in
areas with truck traffic (load up to 12 t, without
ground water and stratum water).
>800 <1800 mm
The tanks can be only partially installed into the
groundwater. If it is to be expected that the ground
water could rise higher, even occasionally, as
shown in the figure opposite, the ground water
must be discharged via a drain line.
It is generally recommended that a drain line is
installed.
12 / 36