ᐅ Water on the foundation slab

Created on: 17 Aug 2017 12:27
S
sauerpeter
Hello everyone,
we visited the site yesterday and noticed that there are large puddles in one room in particular. I was wondering where they could be coming from since the ceiling is already installed.
I should mention that it rained heavily the day before. One might think that, because there are no windows installed yet, the rain simply came in directly. That could be possible.

What surprises me, however, is that in the adjacent kitchen, there is no water on the concrete slab. Okay, there is only a patio door on the wall, and the living room with windows has two large windows. But the kitchen is completely dry. And when I go to the upper floor, the ceiling there is also more or less dry, even though the structure doesn’t have a roof yet and it’s said to have rained.

Could the water be coming from underneath the concrete slab? Or could it be water that seeps around the house or does not drain properly, soaking into the slab and pressing up from below?
It can’t be groundwater since that is about 30 meters (100 feet) deep.

Strange... or is it harmless and just rainwater?
Maybe someone has an idea or explanation.
Y
ypg
18 Aug 2017 07:43
The top dries faster because wind or sun can help with this process.
We cannot assess the room situation on the ground floor!
But it comes down to the fact that where puddles form, drying is slower.
And yes – it will definitely be rainwater, or do you think the concrete is bleeding out now?

Relax!
R
readytorumble
18 Aug 2017 08:07
And a tip for the upcoming period: stay calm.

If you start worrying now about a wet concrete slab after rain, you won’t be able to get any sleep over the next few months.
S
Steffen80
18 Aug 2017 08:16
Our shell construction flooded several times during the winter. At times, the water level was as high as 2cm (0.8 inches). However, this is not a problem and just needs to dry out again.
H
HilfeHilfe
18 Aug 2017 08:43
Steffen80 schrieb:
Our shell construction flooded several times during winter. The water was sometimes as high as 2cm (0.8 inches)… but it’s not a problem. It just needs to dry out again.

And is your villa still standing? ^^
W
Wastl
18 Aug 2017 08:45
Steffen80 schrieb:
Our shell structure flooded several times during winter. The water stood about 2 cm (1 inch) high in some places, but it’s not a problem. It just needs to dry out again.

We had about 50 cm (20 inches) of water standing in the basement (tank waterproofing); we had to pump it out for a long time.
77.willo19 Aug 2017 00:28
I am offering 2m (6.6 feet) on the foundation slab of our basement during the weekend when the groundwater lowering system was out of service.

Construction site with scaffolding, crane, and water trench in front of shell buildings