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6. Assembling the telescopic dome shaft
6.1 Assembling the telescopic dome shaft
The telescopic dome shaft enables infinite adaptation of the tan
to given site surfaces with earth coverage of between 455 mm
and 655 mm (Mini telescopic dome shaft) or 455 mm and 755
mm (Maxi telescopic dome shaft).
For assembly purposes, the enclosed profile seal (material
EPDM) is inserted into the tan dome's sealing groove and is
coated generously with soft soap (do not use mineral oil-based
lubricants, as these attac the seal). The telescope is then
greased, inserted and aligned with the surface of the site.
6.2 Telescopic dome shaft on which persons may walk
Important: To prevent loads from being transferred onto the
tan , round-grain gravel (max. grain size 8/ 16) is filled in in
layers around the telescope and is evenly compacted.
Damage to the tan dome and telescope must be avoided
during this step. The cover is then positioned and is sealed to
prevent entry by children. Tighten the threaded connection
on the cover so tightly that it cannot be opened by a child!
6.3 Telescopic dome shaft over which passenger cars may drive
If the tan is installed under areas used by passenger cars, the
collar area of the telescope (colour anthracite) must be
supported with concrete (load class B25 = 250 g/ m²). The
layer of concrete to be installed must be at least 300 mm wide
and approx. 200 mm high all around. The permitted coverage
above the shoulder of the tan is min. 700 mm and max. 1000
mm. There are different possibilities for lengthening the tan
dome (315 mm): telescopic dome shaft with cast iron lid or
Begu (max. effective length 440 mm) as well as the Adapter
(max. effective length 300 mm).
Attention: Use the cast cover under all circumstances.
6.4 Telescopic dome shaft for HGV loading
When installing below surfaces driven on by HGVs, the telescope
is lined as described in 7.3. The concrete rings (diameter
600 mm) and a cast frame with star-shaped load distribution
are then installed to support the cast cover. The cast frame must
have a contact area of approx. 1 m². To extend the shaft, the
telescopic dome shaft for HGV loading with class D cover,
provided by the customer (max. useful length 440 mm), and the
spacer (max. useful length 300 mm) can be used.
Please note: Can only be driven over with HGV, if a self-
supporting, steel -reinforced concrete plate is installed
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