ᐅ Actual size of the telecommunications cable single-conduit entry?
Created on: 31 Jul 2024 17:46
H
Hausbauer23
Hello,
I am a bit confused about the statements from the telecom provider. They require either a DN50 or DN75 conduit. However, when I look at a Doyma single-duct entry seal Quadro-Secura E1/wide, it accommodates telecom cables with sizes of 2x 5 - 7mm (0.2 - 0.3 inches), 2x 7 - 13mm (0.3 - 0.5 inches), and 1x 12 - 16mm (0.5 - 0.6 inches). Similarly, for the multi-duct entry seal Quadro-Secura Nova 1/wide, the cable openings are not that large but include 2x 5 - 7mm (0.2 - 0.3 inches), 4x 7 - 13mm (0.3 - 0.5 inches), and 1x 13 - 21mm (0.5 - 0.8 inches). So, these seem much smaller than what is specified. How large are telecom cables or possibly future fiber optic cables expected to be? Is a single-duct entry seal definitely sufficient? I would prefer that option because I only need power and telecom lines (water is supplied at the other side of the house).
I am a bit confused about the statements from the telecom provider. They require either a DN50 or DN75 conduit. However, when I look at a Doyma single-duct entry seal Quadro-Secura E1/wide, it accommodates telecom cables with sizes of 2x 5 - 7mm (0.2 - 0.3 inches), 2x 7 - 13mm (0.3 - 0.5 inches), and 1x 12 - 16mm (0.5 - 0.6 inches). Similarly, for the multi-duct entry seal Quadro-Secura Nova 1/wide, the cable openings are not that large but include 2x 5 - 7mm (0.2 - 0.3 inches), 4x 7 - 13mm (0.3 - 0.5 inches), and 1x 13 - 21mm (0.5 - 0.8 inches). So, these seem much smaller than what is specified. How large are telecom cables or possibly future fiber optic cables expected to be? Is a single-duct entry seal definitely sufficient? I would prefer that option because I only need power and telecom lines (water is supplied at the other side of the house).
H
Hausbauer231 Aug 2024 10:32Yes, exactly, this is about a basement. It will be built as a waterproof concrete structure (a true waterproofing system using the Permaton method, not just "some kind of WU concrete"), but we do have well-draining gravel soil and groundwater at a depth of 25 meters (82 feet). In this case, it was even more economical than a traditional tanking method because the waterproofing work also requires time and therefore costs money. Permaton itself also offers collar seals (I’m not allowed to share links here). So, I do believe that this solution is sufficient and that you don’t need anything "more specialized."
I also have a waterproof concrete basement, and all the building penetrations were sealed with compression seals. I’ve had more than 1 meter (3 feet) of water pressure above the seals, and everything held up (unlike the windows...). Doyma is a well-known specialist for all types of compression seals and building penetrations—you can check out their various systems, some of which include installation videos.
Off-topic: A waterproof concrete basement should also have watertight windows. I never considered this because I built almost at the top of a hill. But clay soil and the basement pit can still create a nice bathtub effect even on top of a hill...
Off-topic: A waterproof concrete basement should also have watertight windows. I never considered this because I built almost at the top of a hill. But clay soil and the basement pit can still create a nice bathtub effect even on top of a hill...
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