ᐅ Ground floor constructed from concrete with a ceiling height of 4.5 meters (approximately 14.8 feet)

Hello everyone,

I plan to build the unoccupied ground floor (storage area) with a height of 4.5 m (15 feet) so that the upper level has a ground-level exit. The property is on a slope. The project is still in the early planning stages.
Would you prefer double concrete walls, cast concrete walls, or concrete block walls?
Does anyone have experience with double concrete walls? What are the current costs? Unfortunately, I couldn’t find reliable prices online.
Cast concrete walls would also be great, but this would need to be fully contracted out.
Building the walls yourself with concrete blocks would also be a solution, but I think it would take too much time!
Thanks for your input!

Best regards,
Hickorie

We are building with concrete and also have a sloped site.
At 4.5 meters (15 feet), you will run into problems with double cavity walls. You would have to use them over the entire height, resulting in many narrow sections. The same applies to walls with core insulation.
Doing it yourself is just as labor-intensive as formwork. In fact, with many parts, it can be even more complicated due to the ties.
It’s not just a matter of carrying and pouring concrete...
Tell me more about your project. The slope and ceiling height, etc., sound expensive. What does the soil report say?

Hello,

Nothing below will be insulated except for the ceiling. All installations are planned to be surface-mounted. On top of that, a 150m2 (1,615 sq ft) bungalow will be built. What is the problem with having many small precast concrete walls?

You have an incredibly large number of joints that need sealing (time-consuming and costly). Aligning the individual elements, etc., at a height of 4.5 meters (15 feet) and, for example, 3 meters (10 feet) wide means a wall will easily weigh over 4 tons. That requires larger equipment and a few people. Filling will be done in 2-3 stages.

How large is the basement supposed to be? Tell me more about the project. What is the budget, because this won’t be cheap.

Sealing is not expensive. Simply apply black sealant and place a dimpled membrane behind it—this is sufficient for the neighboring houses as well. The crane is provided by the manufacturer. Filling with a pump is also not a problem. Aligning is somewhat more challenging. The basement level should be the same size as the upper floor. Only tiling on the floor. The rest of the basement does not need to be finished immediately. This can be done years later if desired. A simple bungalow is planned to be built on top. No high-end finishing. Therefore, we estimate the cost at around 300,000 to 350,000.

Hickorie schrieb:

I plan to build the unoccupied ground floor (storage area) with a height of 4.5 m (15 feet) so that the upper floor can have level access outside. The property is on a slope.

Hickorie schrieb:

Nothing below will be insulated except for the ceiling. All installations will be done as surface-mounted. On top of that, a 150 m² (1,615 sq ft) bungalow will be built with masonry.

If my experience with reading impractical ideas doesn’t fail me, this is about the following: a bungalow on a sloped property (is the garden on the uphill side?) is planned to be supported by a basement, and the height difference is 4.5 m (15 feet) within the building footprint (? ? ?). The hope that this can be done for 300 to 350 thousand, assuming exposed concrete with surface-mounted electrical cables and just some tiles, is something I honestly can’t fully agree with, speaking frankly and openly.

---

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/