ᐅ Recessed Entrance in a Prefabricated House: With or Without a Concrete Slab

Created on: 5 Jan 2021 20:00
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Sine_bati
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Sine_bati
5 Jan 2021 20:00
Hello,

regarding the following situation:
We are building a house using timber frame construction with a prefabricated house manufacturer. To be more specific, with Gussek Haus, a myline 150 model (see photos online).
This series has an inset entrance that is recessed toward the back, which is then covered by the first floor above and supported by a wooden post.

Now the question arises whether the concrete slab at this spot should be cut out and initially only a small foundation for the wooden beam should be made (Option A),

or

whether the concrete slab should be poured all at once, including the entrance area (Option B).

Later on, as shown in photos of this house model online, there will be a level platform leading to the front door with steps in front of the platform.

What advantages or disadvantages do you see for either option regarding sealing, dirt during construction, cost factors (additional costs for expansion or possible future costs to build the platform)? Thanks in advance for your assessment.
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Harakiri
5 Jan 2021 21:05
It also depends, among other things, on whether you want or need to insulate the concrete slab. If yes, the decision is relatively simple: in my opinion, an extension doesn’t make much sense because you would then have to create a thermal break.

If not, you can certainly do it, but you need to consider how you will handle drainage there (floor drain, slope, etc.).
11ant6 Jan 2021 02:20
Sine_bati schrieb:

This building series features a recessed entrance set back toward the rear, which is then covered by the first floor and supported by a wooden post.

I would rather call that a notched corner.
Sine_bati schrieb:

Now the question is whether the slab should be cut out at this spot and initially only a small footing created around the wooden beam (Option A),
or
whether the slab should be poured in one continuous pour, including the entrance area (Option B).

What solution does the manufacturer recommend for this?
Don’t they offer the slab as part of their service?
Harakiri schrieb:

In my opinion, an extension makes little sense, as it would then require thermal separation.

There is unfortunately some truth to that.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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hanse987
6 Jan 2021 10:41
What does Gussek Haus suggest? After all, they are not building this type of house for the first time.
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Sine_bati
6 Jan 2021 23:56
Thank you for the responses.

In an earlier plan, the extension of the concrete slab was included. In a newer one, it was omitted, showing only the foundation around the support column, which is also the solution already implemented by other homeowners. We have now decided to go with this option as well, which also gives us more flexibility regarding how we design the steps.
11ant7 Jan 2021 00:50
Sine_bati schrieb:

only with the foundation around the support,
... it seems like a pointless or tricky solution to me.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/