ᐅ Conduits in the foundation slab

Hello everyone,

I am currently wondering how many empty conduits I should plan for in the foundation slab. I have learned that electricity, water, wastewater, and gas each require their own separate conduit.

In addition, there is also telecommunications, cable services, and eventually power for the garage and power for the pump in the cistern.

What would be the best approach to plan for this? Four conduits? Or are there double conduits available? After all, these are just thinner cables.

Thank you.

PhoenixDH schrieb:

I’ve learned that electricity, water, sewage, and gas each require separate empty conduits.

Then here’s something else to learn:
The key term is “multi-utility connection.” This allows water, electricity, telephone, and cable services (gas can also be included) to be run through a single conduit. It is now common in many municipalities and helps to save costs.
For sewage, it depends on how many drains you plan to have (or rather, what the architect plans). Don’t worry about that—the architect is paid to handle it. For example, we have six 100mm (4 inch) pipes for our sewage: 2 for the kitchen, 1 for the guest bathroom, 1 for the bathrooms, 1 for the washing machine, and 1 for the floor drain in the utility room.
In addition, we have two 100mm (4 inch) pipes for the geothermal heat pump lines and an empty conduit for well water, which we use for the toilets. Power for outdoor lighting, garage, entrance lighting, front yard electricity, garden electricity, garden shed electricity, pump power, etc., is usually run directly through the wall without separate conduits.

I am familiar with the multi-utility connection, but it is not used here. The utility companies want each service to be installed separately.

However, I am concerned about the rest, such as water supply, telecommunications, and multiple electrical lines. I think I once read that the pipes inside are separated, is that possible? Because once a cable is installed, the conduit should be properly sealed both inside and outside.

Why do you worry so much about things that your architect has to design anyway and the shell builder will have to carry out?