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Composition and structure of duct bedding

Laying SRV-G tc in the open duct trench is suitable for any terrain and any section of broadband expansion.

 

Composition and structure of duct bedding

In case of rocky or stony subsoil, the trench
bottom must be excavated at least 0.15 m deeper and the excavation must be replaced by a stone-free layer (sand 0-6, with maximum grain size Ø 6 mm). After laying under tension, the cable section must be backfilled with sand up to 10 cm above the bundle peak (see ZTV-TK network 10 / 11 and laying instruction for buriable protective pipes outo of PE-HD.)

What is strictly to observe at an open trench?

In case of rocky or stony subsoil, the trench
bottom must be excavated at least 0.15 m deeper and the excavation must be replaced by a stone-free layer (sand 0-6, with maximum grain size Ø 6 mm). After laying under tension, the cable section must be backfilled with sand up to 10 cm above the bundle peak (see ZTV-TK network 10 / 11 and laying instruction for buriable protective pipes outo of PE-HD.)

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