Supporting horizontal timber?

[hantverkare1]

Hello

My colleague and I had a discussion on Friday about whether to install a load-bearing support or not when it comes to horizontal logs.

He is soon going to install a large window 15x20 in his house where the frame is made of horizontal logs.

Do you need to install a load-bearing support above it then?
The house is from 1901 and there is only 1 floor.

 

[vojma]

Partly depends on how many timber layers are left up to the eaves and the quality of the timber.

 

[hantverkare1]

Naturally, there will be 3-5 laps left, I don't remember exactly what he said, the timber is supposed to be of good quality as I understand it.

 

[ArneTW]

I assume there will be a whole log remaining over the window.

Then it should be fine. I would suggest that you cut a groove into the log ends you're exposing and lock them. You will probably remove some dowels when you create the opening, and you don't want the wall to collapse.

ATW

 

[hantverkare1]

Sounds smart, do you have to stamp up when sawing, or does it work well to just saw up the hole, then saw/router a groove in the ends and insert a rule, I assume a 45x45 is enough?

 

[ArneTW]

I wouldn't have braced, maybe set a brace on the inside and outside that is pulled together with a couple of threaded rods/washers/nuts. However, I've been maintaining a barn where everything's been leaning in all directions lately so I've taken the safer route.

If you google "gåtspår" and "timmerstomme" you'll find some good pictures.

/ATW

 

[hantverkare1]

Thanks! Now I understand how I should do it.

http://www.viivilla.se/experter/Byggnadsvard/ny-dorr-i-liggande-timmer-2881

I found this link that made me very uncertain, are they perhaps painting a nightmare scenario with the foundation and all?

 

[ArneTW]

Now you should/insert a window and then there should be a couple of logs left under the window and then there should probably be no problems.

A picture would be nice to see.

/ATW

 

[hantverkare1]

Unfortunately, I can't take care of the picture.

I think there will be 1-2 laps left as the window is really big, almost like a door, I think the dimensions were 150 wide and 200 high.