I'm going to assemble a bunk bed for my future apartment. The lower bed will stand on its own legs, and the upper bed will rest on the red parts. I'll be the one sleeping in the upper bed (and hopefully someone else too), so it needs to support 200-300 kilos in weight.
I've made a simple sketch in Sketchup of how I envision the construction itself. Then I'll secure some screws into the wall to ensure it's really stable.
I was thinking of using glulam beams as they hold a lot and seem to be basically ready to paint without having to sand down unevenness, etc.
I'm planning to use 90x90mm glulam for the four corner posts and other parts of the construction itself. Except for the two red pieces where I planned to use 90x225mm glulam since my box spring will rest on them and they need to fit under the edges of the bed.
Are my dimensions sensible? Every centimeter in height is important to save on, so that's why I thought 90x90, I know it would be much more stable to have 90x225mm beams vertically but then that's 135mm lost in ceiling height :\ And many "regular" bunk beds are screwed together with almost ordinary boards.
Do I need something between my red pieces to distribute the weight from the bed?
How do I attach the red pieces to the glulam posts that stand upright? Is it enough to screw two screws at an angle, or do I need something more stable?
Thanks!
I've made a simple sketch in Sketchup of how I envision the construction itself. Then I'll secure some screws into the wall to ensure it's really stable.
I was thinking of using glulam beams as they hold a lot and seem to be basically ready to paint without having to sand down unevenness, etc.
I'm planning to use 90x90mm glulam for the four corner posts and other parts of the construction itself. Except for the two red pieces where I planned to use 90x225mm glulam since my box spring will rest on them and they need to fit under the edges of the bed.
Are my dimensions sensible? Every centimeter in height is important to save on, so that's why I thought 90x90, I know it would be much more stable to have 90x225mm beams vertically but then that's 135mm lost in ceiling height :\ And many "regular" bunk beds are screwed together with almost ordinary boards.
Do I need something between my red pieces to distribute the weight from the bed?
How do I attach the red pieces to the glulam posts that stand upright? Is it enough to screw two screws at an angle, or do I need something more stable?
Thanks!
Two glulam beams 90x225 on the edge can handle a 300 kg load without bending down too much. You can go down to 90x180 without it being noticeably worse. However, I think you're using the posts incorrectly, i.e., not at all other than as decoration. Four glulam posts can support a light tank. I think you should redraw so that your bed beams rest on posts. Consider if it would look better with a square cross-section on the posts. You can always hide the post construction on the outside with planed pine boards.
It spontaneously feels incredibly over-dimensioned. You could use 45x45 as studs and replace the horizontal laminated beam with a standing 45x90. The beam against the wall won't be a problem since you're going to screw it into the wall, and you can further reinforce the other one by screwing on a plank/panel at the front, perhaps with dimensions 20x145 or something like that. Not that I think you need it, but if you want to be sure, or just cover the rule with something more attractive. Does the bed reach all the way to the outer edge? Otherwise, you'll have to screw on another 45x90 inside or alternatively put cross braces of 45x90 to have a base to place the bed on.
As jujusuandersson says, you can always hide a construction of studs with other material in front. It will be much cheaper that way, anyway.
As jujusuandersson says, you can always hide a construction of studs with other material in front. It will be much cheaper that way, anyway.
If you are going to have a spring mattress, it only needs support at the corners or where it otherwise has legs. If the bed can support 300 kg when it's on the floor, it should do so regardless of where it's placed.
Thanks for the input! I know that the posts don't really serve their true function and are mostly for appearance 
I'll sketch a bit more and see if I might go down a bit in dimension, I will still cover much of the sides with gypsum so the studs can be hidden if desired. Thanks!
I'll sketch a bit more and see if I might go down a bit in dimension, I will still cover much of the sides with gypsum so the studs can be hidden if desired. Thanks!