Hello
I was pleased to inspect the progress of my build on Friday. The foundation slab has been completed. Aside from incorrect dimensions of the garage attached to the house, I noticed a few minor issues:
- The external perimeter insulation between the slab edge formwork and the concrete shows gaps of about 1 cm (0.4 inches) in several places, especially at the corners. What is the best way to address this?
- One section of the formwork has a slight curve and is not completely straight. The same question applies here as well.
- In areas where rainwater puddles have formed, you can scrape off a very thin layer of concrete with a fingernail. At these spots, the concrete appears to have fine cracks. Should I be concerned about this?
- On the concrete of the garage, especially along the edges inside the formwork, there are very small visible steel fibers. Again: is this something to worry about?
- Some stones in the edge formwork above show slight cracks. The same question applies here too.
Unfortunately, I was not present during the concreting process, so I do not know what preparations were made before the concrete was poured.
Thank you in advance for your help
I was pleased to inspect the progress of my build on Friday. The foundation slab has been completed. Aside from incorrect dimensions of the garage attached to the house, I noticed a few minor issues:
- The external perimeter insulation between the slab edge formwork and the concrete shows gaps of about 1 cm (0.4 inches) in several places, especially at the corners. What is the best way to address this?
- One section of the formwork has a slight curve and is not completely straight. The same question applies here as well.
- In areas where rainwater puddles have formed, you can scrape off a very thin layer of concrete with a fingernail. At these spots, the concrete appears to have fine cracks. Should I be concerned about this?
- On the concrete of the garage, especially along the edges inside the formwork, there are very small visible steel fibers. Again: is this something to worry about?
- Some stones in the edge formwork above show slight cracks. The same question applies here too.
Unfortunately, I was not present during the concreting process, so I do not know what preparations were made before the concrete was poured.
Thank you in advance for your help
Hello expose
There has clearly been some poor workmanship here. I haven’t seen concrete poured this carelessly in a long time.
I’m also puzzled by the thin wires. What is their intended function? If the reinforcement was properly installed, there is a risk that moisture will reach the steel. The concrete hasn’t been placed fully to the edges, so the cover over the reinforcement is too thin.
Steven
Steven
There has clearly been some poor workmanship here. I haven’t seen concrete poured this carelessly in a long time.
I’m also puzzled by the thin wires. What is their intended function? If the reinforcement was properly installed, there is a risk that moisture will reach the steel. The concrete hasn’t been placed fully to the edges, so the cover over the reinforcement is too thin.
Steven
Steven
I believe that the clinker bricks will be laid later on top of the "formwork blocks." The interior wall rests on the concrete slab, with mineral wool insulation in between.
The blinding layer is replaced by the perimeter insulation beneath the concrete slab. As far as I know, this is acceptable.
So far, this is fine.
However, I would recommend hiring a building surveyor or expert specializing in concrete work. The visible reinforcement is not ideal. It should also be checked whether proper compaction was carried out.
The blinding layer is replaced by the perimeter insulation beneath the concrete slab. As far as I know, this is acceptable.
So far, this is fine.
However, I would recommend hiring a building surveyor or expert specializing in concrete work. The visible reinforcement is not ideal. It should also be checked whether proper compaction was carried out.
The insulation has definitely only been added as an extra at the edges and is not included in the thermal insulation calculation. The panel is made of steel fiber concrete and apparently has no additional reinforcement. What I have found is that corrosion in steel fiber concrete is considered unproblematic and does not spread further.
K
Knallkörper5 Oct 2016 23:00Hello.
How thick is the slab? Please ask to see the structural calculations.
How thick is the slab? Please ask to see the structural calculations.
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