I'm living in a Ljusne-Woxna house built in 1960, and we plan to change the floor plan a bit in conjunction with a kitchen renovation.
We want to tear down some walls and open up to the ceiling in some openings to get a more spacious feel.
I thought I'd post here to get some tips from the collected expertise on the forum.
When the bathroom was remodeled a few years ago, the outer bathroom wall towards the hall was replaced with a new longer wall, and the door was moved, resulting in the two green-marked door openings being removed and it is open to the ceiling in the hall.
The red-marked part of the main wall towards the hall is currently a double door where we would like to open up to the ceiling. However, we realize that we need to support the joists above in some way.
My idea is to install a beam, but I'm unsure about the required dimensions.
The main wall is 85 mm thick in the hall, and the span of the opening would be 1700 mm.
The main wall that separates the kitchen and dining room is 3050 mm long, and we want to remove it entirely, so we need some kind of support there too. Any suggestions on dimensions there would be very helpful!
The last red-marked wall I've concluded is not a load-bearing wall, so I've started removing the fiberboard sheets to see how the wall is constructed. However, I found two sturdy beams that, based on their dimensions, seem to have some load-bearing function, so they probably need to stay. I'm just wondering what they are supporting since they run along the joists.
(there are two beams at the top that seem to attach to the outer wall)
The opening between the hall and living room currently accommodates a smaller beam above the double doors. If you wish to expand the opening to 1.7 m, a new beam is required as support. Raising it to the ceiling level requires the beam to be recessed into the floor structure. This is a guaranteed complex and costly procedure. The wall between the kitchen and dining room also needs support. This will require a quite substantial beam, probably in the range of 90x315 - 90x405 mm if using glulam. One can reduce the beam height by choosing wider beams. The wall between the dining room and living room seems to have been added later. It is built in a more old-fashioned way. I'm not familiar with the features that distinguish Ljusne-Woxna houses, but it might be a form of prefab house. In such cases, it is always best to be thorough and cautious.
Thank you for the quick response, much appreciated! I probably expressed myself a bit clumsily, I meant that we want to open up as much as possible between the living room and the hallway, but not embed the beam in the intermediate floor. What do you think about the dimensioning of a support beam in such a situation?
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