Hello,
we are building a solid house on a slab foundation without a basement / KfW70 standard.
Since I wanted to create additional capacity for cables (to the garage, garden, etc.), I was considering an extra 100mm (4 inches) empty conduit in the utility room, incorporated during the slab foundation installation.
The site manager says that a shaft for a multi-utility connection will be provided. The utility companies prefer not to have other supply lines installed inside the pipes intended for the multi-utility connection.
Is the approach with the empty conduit outdated? Would it be better to drill holes after the slab is completed?
How have you solved this?
Käfer
we are building a solid house on a slab foundation without a basement / KfW70 standard.
Since I wanted to create additional capacity for cables (to the garage, garden, etc.), I was considering an extra 100mm (4 inches) empty conduit in the utility room, incorporated during the slab foundation installation.
The site manager says that a shaft for a multi-utility connection will be provided. The utility companies prefer not to have other supply lines installed inside the pipes intended for the multi-utility connection.
Is the approach with the empty conduit outdated? Would it be better to drill holes after the slab is completed?
How have you solved this?
Käfer
Hello, I’m new to the forum and I’m allowed to build. I have some questions about the utility connections from the property boundary to the house (multi-utility entry). Almost everyone has told us that the utility connections come at the very end—like electricity, telecommunications, drinking water, and others.
But does it make sense to dig everything up again later? Is it possible to plan ahead somehow, for example when the foundation slab is being laid or poured, by digging a trench and installing empty conduits? I’m completely unfamiliar with this topic. Thanks in advance!
But does it make sense to dig everything up again later? Is it possible to plan ahead somehow, for example when the foundation slab is being laid or poured, by digging a trench and installing empty conduits? I’m completely unfamiliar with this topic. Thanks in advance!
Same here, the site engineer laid all the empty conduits for the multi-utility lines last week and also pulled the construction water through the multi-utility conduit. Now everything is already backfilled, the electricians only need to pull the cables through the empty conduit, as do the fiber optic installers.
Here’s the classic case: End of July 2017:
The general contractor (GC) had connected our house to the sewer system, and the drainage pipes were also installed. Now for the utilities... the GC tried to coordinate. “Please, Thursday: the gas and water supplier must go first because their trench goes deepest. They should leave their trench open so that on Friday the electricity supplier can come, and the telecom company can get an empty conduit.” That was the plan. But, as usual, things turned out differently.
The gas and water subcontractor didn’t show up because of a gas line break somewhere else. The electrician came anyway, dug a trench, pulled in the cable, jointed it, and left everything open. The following week, the gas and water subcontractor arrived and complained. “Nonsense, the electricity is already in, live power on, and we have to go underneath.” I told him to be very careful digging. He marked the electric cable with yellow flags, so it was visible. And for the telecom empty conduit... I handed him €50 (about $55) and asked him to add that so they wouldn’t have to dig again. He grumbled a bit but calmed down. He managed not to damage the electric cable.
And what do we do now with the telecom guys? “Should we leave the access hole open?” I said I would take care of it and let everyone know.
Telecom customer service said: “Yes, please leave the access hole open for one more day because they still have work to do in the neighborhood... You won’t get a better opportunity than this. The empty conduit is installed as good as on a silver platter.” I persuaded the friendly telecom employee to give me the mobile number of their subcontractor in Kiel. She gave me the construction manager’s mobile number right away. “Andresen here, KM Telecommunication Kiel... Where did you get this number?” I answered truthfully and explained my request. And indeed, “Yeah, I can see that we have someone nearby who will come this evening and take care of it.”
Sure enough, the fiber optic tube was pulled through the conduit, the gas supplier’s subcontractor closed the access hole, the electricity was still intact, and the house got its supply. Phew.
That just turned out well.
Karsten
The general contractor (GC) had connected our house to the sewer system, and the drainage pipes were also installed. Now for the utilities... the GC tried to coordinate. “Please, Thursday: the gas and water supplier must go first because their trench goes deepest. They should leave their trench open so that on Friday the electricity supplier can come, and the telecom company can get an empty conduit.” That was the plan. But, as usual, things turned out differently.
The gas and water subcontractor didn’t show up because of a gas line break somewhere else. The electrician came anyway, dug a trench, pulled in the cable, jointed it, and left everything open. The following week, the gas and water subcontractor arrived and complained. “Nonsense, the electricity is already in, live power on, and we have to go underneath.” I told him to be very careful digging. He marked the electric cable with yellow flags, so it was visible. And for the telecom empty conduit... I handed him €50 (about $55) and asked him to add that so they wouldn’t have to dig again. He grumbled a bit but calmed down. He managed not to damage the electric cable.
And what do we do now with the telecom guys? “Should we leave the access hole open?” I said I would take care of it and let everyone know.
Telecom customer service said: “Yes, please leave the access hole open for one more day because they still have work to do in the neighborhood... You won’t get a better opportunity than this. The empty conduit is installed as good as on a silver platter.” I persuaded the friendly telecom employee to give me the mobile number of their subcontractor in Kiel. She gave me the construction manager’s mobile number right away. “Andresen here, KM Telecommunication Kiel... Where did you get this number?” I answered truthfully and explained my request. And indeed, “Yeah, I can see that we have someone nearby who will come this evening and take care of it.”
Sure enough, the fiber optic tube was pulled through the conduit, the gas supplier’s subcontractor closed the access hole, the electricity was still intact, and the house got its supply. Phew.
That just turned out well.
Karsten
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