ᐅ Severe weather warning level red for our construction area tomorrow!

Created on: 12 May 2018 21:13
K
KingSong
Hello everyone,

A severe weather warning has been issued for our building site tomorrow from 2 p.m. to 5 a.m. the following day. It is a red alert with warnings of heavy rain, hail, and hurricane-force winds.

At the moment, our base slab is prepared for the concrete pour scheduled on Monday.

Current status:

- 18 cm (7 inches) of perimeter insulation installed
- plastic sheeting on top
- spacers and one layer of reinforcement steel

Can I leave everything as it is shown in the picture without worry, or should I secure anything or take other precautions?

Could hail cause serious damage to the plastic sheeting or the perimeter insulation?


Foundation construction site with reinforcement steel mesh, gravel, and adjacent house


Thanks in advance,

greetz Jörg
N
Nordlys
14 May 2018 20:28
It was still too soft for heavy rain, so now it is bumpy. The fine material was washed away, but the pebbles remained. However, the binder is cement. That did not wash out. Definitely not. Just wait and see how it looks once it has hardened. Whether you need to add more on top, or if the screed specialist can level it out. There’s nothing you can do today anyway.
O
Otus11
14 May 2018 22:13
KingSong schrieb:
I’m just concerned about the words of the foundation slab construction manager. An hour before the heavy rain, he said a little rain would be a great form of curing, but rain like yesterday would be really bad.....

So why doesn’t the respected foundation slab manager protect his work from such exposure, for example with tarps?
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Egon12
14 May 2018 22:13
Generally, you can’t do anything yourself, or are you the site manager? Let the professionals handle it ... that’s what warranties are for.

Otherwise, a well-meaning piece of advice: relax, or you’ll come out of your house construction 20 years older. These are just minor issues now.
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HilfeHilfe
15 May 2018 06:54
Keep us updated!
KingSong15 May 2018 12:53
UPDATE:

The surface doesn’t look too bad; it’s not exactly attractive, but it’s acceptable.

However, what was visible after removing the formwork is less pleasing to me. As a layperson, I can’t judge if this is still okay, especially at the corner, but the site manager from the foundation crew said it was completely fine (which is understandable, of course).

I would really appreciate honest opinions on the following pictures:


Cross-section of a foundation with concrete, gravel, and insulation on a construction site

Close-up of a rough concrete foundation edge with gravel on a construction site.

Foundation in shell construction stage with gravel grain and insulation at the lower edge

Fresh gravel surface with footprints on a construction site outdoor area

Close-up of a rough concrete surface with pebbles

Foundation slab on a new build construction site with soil, earth, and neighboring residential houses.
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haydee
15 May 2018 13:12
I don’t like it intuitively either. Do you have an expert or surveyor? I would get one, even if it’s just for the foundation slab.