ᐅ Freestanding bathroom wall: Can the wall support a double sink?

Created on: 17 Jun 2018 08:58
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Schluffi0815
Hello everyone,

I need a quick assessment.

We want to build a freestanding wall in our bathroom (about 2m x 2.2m [6.6 ft x 7.2 ft]). I planned to build it with aerated concrete blocks, 17.5cm (7 inches) thick, directly on the raw floor (the screed will be installed afterwards). The wall will have no additional support or connection to other masonry.

Will the wall hold if we later mount a double washbasin on it?

Should I perhaps build it 24cm (9.5 inches) thick instead?

What is your opinion?

Thanks for any help.
C
Caspar2020
19 Jun 2018 09:42
kbt09 schrieb:
11ant suggests that the wall should not have any contact with the ceiling, but rather should simply end after about 2m (6.6 ft) or 2.2m (7.2 ft).

I think that is clear to everyone. The question remains: what kind of ceiling is there beneath the screed?
apokolok schrieb:
What is the ceiling made of? Concrete with steel reinforcement or wood?

Regardless of that:
Schluffi0815 schrieb:
Will the wall hold if a double sink is mounted on it later?
Schluffi0815 schrieb:
I planned to build it with aerated concrete blocks, 17.5cm (7 inches) thick

That will be challenging, especially since you will need to weaken the wall to accommodate the plumbing inside it (particularly the waste pipe).

The best solution is actually the Geberit GIS system. However, your desired size doesn’t quite fit within the manufacturer’s specified limits.


Geberit GIS room divider mounting kit with dimensions height width depth
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Schluffi0815
19 Jun 2018 11:50
Below is a reinforced concrete slab (C30/37) 20cm (8 inches) thick.

Currently, I am planning to add the connecting reinforcement for the wall afterward and cast concrete columns within the wall.

Procedure as follows:
1. Drill holes with a diameter of 12mm (0.47 inches)
2. Clean the drilled holes
3. Inject mortar
4. Insert reinforcing bars with a diameter of 10mm (0.39 inches)
(I plan to bond 4-6 bars per column – half on each outer side of the wall.)
5. Then, build the wall up to the planned height of the bracing columns (1–1.5m (3.3–4.9 ft)). Two recesses will be created where the bars run and where concrete must be poured.
6. Formwork and concrete casting.
7. After drying, finish building the wall up to the planned height.

It is important that the masonry is interlocked accordingly so that the concrete columns provide good stability to the wall.

I hope my plan will succeed.
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ypg
19 Jun 2018 13:57
Why don’t you add some masonry columns in front that can support a slab, into which the sinks can be recessed or placed on top? You could also mortar a small plinth on which a base cabinet could stand. This approach kills two birds with one stone: stability and an attractive wash area.
11ant19 Jun 2018 17:33
Caspar2020 schrieb:
I think that is clear to everyone. The question still is, what type of ceiling is under the screed?

To make it clear for everyone, apokolok differentiated this in #8 and called the lower ceiling the "floor." In my opinion, the subsequent question about the ceiling logically refers to the bathroom ceiling, not the ceiling of the floor below. Therefore, my note that there is no anchoring planned upwards.
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