Good morning everyone,
yesterday the foundation slab for our double garage was poured.
Specifications were:
6.40m x 8.00m (21.0 ft x 26.2 ft)
2 notched driveway entries with angle irons as edge protection
2 empty conduits to connect to the house utility room
Surface smoothed out
In my opinion, the result is not acceptable.
There is a depression behind the empty conduits where not enough concrete was poured.
The angle irons used as edge protection are partially raised a few millimeters above the slab because there was insufficient concrete underneath.
At one corner, it seems that temporary wooden boards were used inside the formwork, causing additional edges at that corner.
The surface generally has many grooves, blemishes, and ridges.
Attached are some photos.
My question is, can these issues be properly repaired, or would that just be a poor fix? The contractor is aware of the photos and points mentioned, and I am currently waiting for their feedback. I want to be cautious and not get false promises regarding possible solutions.
Thanks in advance for your assessment and advice!
Best regards!
yesterday the foundation slab for our double garage was poured.
Specifications were:
6.40m x 8.00m (21.0 ft x 26.2 ft)
2 notched driveway entries with angle irons as edge protection
2 empty conduits to connect to the house utility room
Surface smoothed out
In my opinion, the result is not acceptable.
There is a depression behind the empty conduits where not enough concrete was poured.
The angle irons used as edge protection are partially raised a few millimeters above the slab because there was insufficient concrete underneath.
At one corner, it seems that temporary wooden boards were used inside the formwork, causing additional edges at that corner.
The surface generally has many grooves, blemishes, and ridges.
Attached are some photos.
My question is, can these issues be properly repaired, or would that just be a poor fix? The contractor is aware of the photos and points mentioned, and I am currently waiting for their feedback. I want to be cautious and not get false promises regarding possible solutions.
Thanks in advance for your assessment and advice!
Best regards!
Malle Zwabber9 May 2023 11:48Some defects will disappear once the masonry work is done.
Should the floor remain exposed, or will a screed be applied?
If it were supposed to be exposed concrete, finishing with a power trowel would have been necessary. However, that is quite expensive.
Therefore, I decided to install a screed in the garage.
Should the floor remain exposed, or will a screed be applied?
If it were supposed to be exposed concrete, finishing with a power trowel would have been necessary. However, that is quite expensive.
Therefore, I decided to install a screed in the garage.
It was agreed beforehand that smoothing the surface would be sufficient since it’s just a garage.
I’m now thinking that I will try to sand down the larger "bumps" and then apply a leveling compound about 2-3mm (0.08-0.12 inches) thick.
The garage will not be built with masonry. It will be a timber frame prefabricated garage.
My main concerns are the somewhat floating metal angle brackets and the corner that was later formwork-clad with boards. We’ll see how this can be resolved… Unfortunately, I’m not a professional and I hope the company will honestly and openly advise me on how to address these issues.
I’m now thinking that I will try to sand down the larger "bumps" and then apply a leveling compound about 2-3mm (0.08-0.12 inches) thick.
The garage will not be built with masonry. It will be a timber frame prefabricated garage.
My main concerns are the somewhat floating metal angle brackets and the corner that was later formwork-clad with boards. We’ll see how this can be resolved… Unfortunately, I’m not a professional and I hope the company will honestly and openly advise me on how to address these issues.
Hello everyone,
we have now also checked the dimensions of the foundation slab (except for the height).
The actual measurements compared to the plan are shown in the attachment.
From our point of view, the following discrepancies are significant:
4cm (1.6 inches) difference in width between front and back
2cm (0.8 inches) wider nose at the front center compared to the plan
14cm (5.5 inches) difference in the length of the diagonals, which means the foundation slab cannot be perfectly square.
So far, we are still waiting for a response from our company regarding these reported “defects.”
Are these dimensional deviations still within acceptable “tolerances”? I am wondering how I am supposed to place a rectangular 6.40m x 8.00m (21.0 ft x 26.2 ft) prefabricated garage on this foundation slab…
Thank you for your feedback!
we have now also checked the dimensions of the foundation slab (except for the height).
The actual measurements compared to the plan are shown in the attachment.
From our point of view, the following discrepancies are significant:
4cm (1.6 inches) difference in width between front and back
2cm (0.8 inches) wider nose at the front center compared to the plan
14cm (5.5 inches) difference in the length of the diagonals, which means the foundation slab cannot be perfectly square.
So far, we are still waiting for a response from our company regarding these reported “defects.”
Are these dimensional deviations still within acceptable “tolerances”? I am wondering how I am supposed to place a rectangular 6.40m x 8.00m (21.0 ft x 26.2 ft) prefabricated garage on this foundation slab…
Thank you for your feedback!
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