Load-bearing walls

[alacs]

Hello,

I have a house from AB Elementhus Mockfjärd. From what I have read, it seems there are so-called cassettes between the floors and it is said that the construction is self-supporting, but I can't find any concrete evidence. I would like to take down the wall indicated in the pictures from the outer wall up to the door and wonder if someone, with just the help of the photos, can help me “determine” if it is possible without having to transfer the load?

The house is about 11x11 m and was built in 1974. 1.5 stories.

 

[justusandersson]

You must alternate with a beam and two columns. It is apparent from the load calculation that the load on the wall is 920 kp/m, i.e., 9 kN/m. You must also check that the slab can withstand the point loads represented by the columns.

 

[alacs]

Thank you for the response!

You need to replace with a beam and two columns. From the load calculation, it appears that the load on the wall is 920 kp/m, i.e. 9 kN/m. You also need to check that the slab can withstand the point loads that the columns represent.

What type of company should I contact to get help checking the slab and designing the beam?

 

[justusandersson]

You should hire a structural engineer. If you can find a section drawing that includes the slab and specify the desired dimension of the opening, you might get a bit more help here.

 

[bearmaniac]

Thanks for the response!

What type of firm should I contact to get help checking the slab and dimensioning the beam?

First of all: congratulations on the fantastic drawings.
Then, replacing load-bearing walls in Elementhus is something I've written about in a couple of threads before, for example:
https://www.byggahus.se/forum/threads/riva-baerande-vaegg-mockfjaerdshus.350089/ (post 9) https://www.byggahus.se/forum/threa...nthus-mockfjaerds-pagaende-renovering.311548/ (post 14)

In short: to calculate loads, you need help from a structural engineer (many construction firms have contacts in that area). What is the house like? Is it a slab or a basement? The engineer can certainly guide you regarding point loads. Hopefully, you also have drawings of how the basement/slab is constructed to help with this assessment, so you don't have to do your own investigations of the house.

Edit: Justus was of course first on the ball.

 

[alacs]

You should hire a structural engineer. If you can find a sectional drawing where the slab is included and specify the desired dimension of the opening, you might get a bit more help here.

ok I'll keep looking through all the drawings. I'll get back to you! And thanks again

 

[alacs]

First and foremost: congratulations on the fantastic drawings.
Then, regarding replacing load-bearing walls in Elementhus, I've written about it in a couple of threads before, for example:
[link] (post 9) [link] (post 14)

Briefly: to calculate the loads, you need help from a structural engineer (many construction companies have contacts in this area). How is the house constructed? Is it slab or basement? The structural engineer can surely guide you regarding point load. Hopefully, you also have drawings of how the basement/slab is constructed to help with this assessment, and avoid having to conduct your own investigations of the house.

Edit: Justus was, of course, first to the punch.

thanks! I'll check your links after work

 

[alacs]

You should hire a structural engineer. If you can find a sectional drawing that includes the slab and specify the desired size of the opening, you might be able to get more help here.

looking for the slab's drawing, but the opening I want to make is about 3.05 meters including the removed doorway.

 

[alacs]

You should hire a structural engineer. If you can find a section drawing where the slab is included and specify the desired dimension of the opening, you might get a bit more help here.

it's about wall number 7. This is what I've found about the slab. Does that help at all?

thank you for your commitment.

 

[justusandersson]

It hardly gets better than this! With an opening of 3.05 m, the column loads are 14 kN (approximately 1400kg) per column. There are piles under the wall and a concrete beam on top of the piles, so there shouldn't be any problems.

 

[alacs]

It can hardly get better than this! With an opening of 3.05 m, the column loads are 14 kN (about 1400kg) per column. There are piles under the wall and a concrete beam on top of the piles, so there should be no problems.

So what do I tell the carpenters?

I need a glulam beam with dimension xx and 2 columns (glulam ??) with dimension yy?

 

[justusandersson]

Yes exactly! Try with 90x315 and 90x90.

 

[alacs]

Yes exactly! Try with 90x315 and 90x90.

Thank you humbly for the help!
So with the dimensions above, you mean I won't have my son's bed and desk directly in the dinner party?

 

[alacs]

Removed the wall side towards the kitchen today and found this behind it. Masonite boards on this side and chipboards on the other side. Can I also remove the chipboards and leave the studs in place until I make adjustments?

 

[Villa vista]

Yes