Dimension glulam load-bearing wall

erik_83 · 29 Oct 2018 at 7:51 PM

Hi. I have a terraced house where I would like to remove a load-bearing wall. It has a flat roof with roofing felt. The roof joists are 50*200 and are spaced 800cc. The wall I want to remove is 170cm. I'm thinking of laying it out like a T. The long measurement is 370cm. Is it possible or am I thinking wrong? /erik

justusandersson · 29 Oct 2018 at 9:20 PM

Hello and welcome to the Byggahus forum!
It's certainly possible. Are you thinking of a glulam beam resting at one end on an angled beam? To be able to calculate it, one needs to know the house's dimensions. It's also good to know where in Värmland the house is located. The snow zones vary quite a bit in Värmland.

erik_83 · 30 Oct 2018 at 3:24 PM

Hello. I live 2 mil west of Karlstad. Just tell me what measurements you want, and I'll take care of them /erik

justusandersson · 30 Oct 2018 at 8:26 PM

Enter dimensions according to the arrows in the image.

Floor plan with red arrows indicating measurements across various rooms including bedrooms, kitchen, workspace, and storage areas.

erik_83 · 31 Oct 2018 at 3:06 PM

I hope I have made it clear enough. Otherwise, let me know. Appreciate the help. /erik

justusandersson · 31 Oct 2018 at 8:26 PM

Since there are certain uncertainties with this type of calculation remotely, for example, I don't know the exact position of the rafters, you must have proper margins. The 170 cm long beam should have dimensions of 90x225 mm and the 370 cm long one, 90x315. To attach the short beam to the long one requires very sturdy wrought iron fittings. Together with bolts, they should be able to support a point load of over 2 tons. Such fittings are not available pre-made and must be manufactured by a blacksmith or a mechanical workshop that knows how to dimension them (with good margin). I have made a simple illustration to ensure we have the same vision.

Illustration showing the connection of two beams, one short and the other long, using robust metal fittings for supporting over 2 tons of load.

erik_83 · 31 Oct 2018 at 8:40 PM

That was my plan, unless you have suggestions for another solution.? It's the one at 170cm that is load-bearing. I want the 370 one because something has to support the 170cm one, and I want to avoid a post. I'll try to get a picture so you can see how the rafters are positioned. I assume I also need glulam posts? Dimensions on those?

justusandersson · 31 Oct 2018 at 8:57 PM

90x90 posts are sufficient. With a length of 2.5 meters, such a post can withstand a load of 5 tons.

erik_83 · 31 Oct 2018 at 9:02 PM

That's where the beams are. One is located about 5cm in from the outer wall and then cc 80cm from it.

justusandersson · 31 Oct 2018 at 9:05 PM

That's about how I imagined it. What does it look like further to the right in the picture?

erik_83 · 31 Oct 2018 at 9:17 PM

They continue the same way. I can upload a picture of the ones that are load-bearing if you want, but I get the feeling you already know.

justusandersson · 31 Oct 2018 at 9:20 PM

erik_83 · 31 Oct 2018 at 9:44 PM

Posting a picture of the load-bearing walls

justusandersson · 31 Oct 2018 at 10:21 PM

You didn't need to for my sake because I already knew, but the thread probably has other readers too.

erik_83 · 5 Nov 2018 at 12:57 PM

Hello. I'm new to the house, so I took the opportunity to talk to some neighbors because they had renovated their entire roof. I've also removed a little more in the ceiling. The ceiling beams didn't go as I thought in one of the rooms. In the other rooms, they are as previously mentioned. I'm attaching a new picture. Does this have any significance or can I use the same dimensions as you mentioned earlier? /erik