I plan to build a shelf with space for 36 moving boxes.
2800(height)x2600x600.
I was thinking of using 45x45 for the posts and beams. And 20mm raw wood for the shelves.
Will this hold, or should I use sturdier posts, like 45x70 or more?
It will be anchored to the wall, so I guess cross bracing is not needed then.
Built my shelf with spaced panel 28 x 70. To reinforce the horizontal beams, I cut pieces and mounted them between all horizontals. So you could say 28 x 70 x 2 pcs
My shelf is 5 moving boxes high + 1 shelf on top.
I myself have an Ikea Ivar that is 50cm deep and you can fit three smaller moving boxes from Biltema per shelf. And no issues with strength even though the shelves sag a bit. So I suspect your version won't have any problems either... But I almost recommend the slightly smaller boxes if you know that they will be packed full/heavy otherwise. Think of your back!
The load-bearing capacity of a post is primarily determined by the so-called buckling length, i.e., the longest unbraced length. A 45x45 post of class C 14 can handle up to 11.6 kN (1187 kg) when the buckling length is 80 cm. The posts are not the parts that will break first in the intended construction. There is an excellent table on this in the timber guide. https://www.traguiden.se/konstrukti...vor-av-konstruktionsvirke/?previousState=0010
What determines the load-bearing capacity of a post is primarily the so-called buckling length, i.e., the longest unsupported length. A 45x45 post of class C 14 can handle a maximum of 11.6 kN (1187 kg) when the buckling length is 80 cm. The posts are not the elements that will break first in the intended construction. There is an excellent table for this in the wood guide. [link]
So in other words, a shelf with 8 pieces of 45 x 45 would handle about 9.5 tons
Then 28 x 70 spaced panel seems perfectly OK
In theory, yes. The posts in the middle (if there are more than four) will always be more burdened than those at the ends. Many other things will break before you reach 9.5 tons. The theory behind this was developed by the Swiss mathematician Leonard Euler in the 1700s. The moment of inertia and the modulus of elasticity are the most important parameters besides the length. The advantage of completely square sections is that the buckling load is the same in both directions. If you take 28x70, they will be significantly weaker in one direction, which then needs to be better braced.
Now that the basic question is settled, I just want to add that it's madness to create storage for moving boxes.
What ends up in a moving box most likely stays there until you decide to throw it away.
If you need storage, I recommend getting a number of transparent plastic boxes with lids instead. Looks much better and you can find what you're looking for much easier.
Now that the main question is settled, I just want to point out that it's madness to create storage for moving boxes.
What ends up in a moving box will almost certainly stay there in most cases until you decide to throw it away.
If you need storage, I recommend getting a number of transparent plastic boxes with lids instead. They look much better and you find what you're looking for much more easily.
Yeah, nowadays places like Shurgaard and similar are advertising that you can RENT a storage unit with them to put in all the boxes full of crap that you don't use anymore.
Just built something similar with 45x45 as posts, 70x28 as shelf bearers, and råspont as shelves.
Then screwed it to the wall.
I made some sections for small drawers and some for regular size.
Don't have a fully loaded picture, but it felt like it can hold a lot.
Frame/ends in 28x70 or 45x45 is guaranteed to be sufficient. Secure with a corner bracket per section in the wall. Compare with Ikea's shelf unit Gorm which consists of thin and hollow boards, and you'll have a good margin.
Used 28x70 for the storage below.
Frame/sides in 28x70 or 45x45 are guaranteed to be enough. Secure with an angle bracket per section in the wall. Compare with Ikea's storage shelf Gorm, which consists of thin and hollow boards, and you'll have a good margin.
Used 28x70 for the storage below.
[image] Built my shelf with sparse paneling 28 x 70. To reinforce the horizontal beams, I cut pieces and mounted them between all horizontals. So you could say 28 x 70 x 2 pcs
My shelf is 5 moving boxes high + 1 shelf at the top.
Hello! Nice shelf system! What did you use as shelf boards? Looks like 3 pieces of some sort of planks? Thanks in advance! Take care, take care!
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Mixed, I would say. 20kg per box maybe?
