i'm moving to an apartment for the 1st time in my life. we have done built in cabinets from floor to ceiling there. i asked the cabinet contractor what is the weight limit for each shelf. he didnt know. he just said best to keep heavy stuff low and light stuff up. anyone know what the safe weight limits are on these kind of cabinets.

Hai ya. Do your own calculation. See what the material used for cabinet and the support it use. Customise stuff can calculate but proffesional fees lor. Contractor job pasang only.

how to calculate? i even check ikea website, their tall wardrobe that look similar to what i have, material also similar. but they dont have any weight related info in their safety or measurement section

Light materials ok. Max 50kg.

Reason because some wardrobe used pegs to support the shelves. My IKEA wardrobe Max also 50kg. If need to add heavier items, I will add L brackets on all 4 corners.

This is not industrial product, no one will calculate this. Just do as the contractor told you to.

thanks! i just got thru to ikea customer support. they said for tall wardrobe, 35kg per shelf, recommended max 5 shelves per tall frame, and 25kg on top of the frame

You check the board what type of wood plywood or solid wood or other type then check how strong the wood can generally sustain. Then check the material used to support the wood and check how much can the support. Atleast you get general idea how much it cam hold.

You check Ikea. Design might be similiar but the material most likely different

It can be calculate if you can construct exact copy. Keep adding weight till failure then take percentage out before failure for buffer. That how thing is calculate sometimes

It depends on the design of the wardrobe and how it is secured to the wall

Some of these factors include the width of the shelf, the materials of the shelf and carcass

Wood don't break out of sudden, if you try to place heavy item in it you will see it start to sag or start making cracking sound, that's when you know you need to stop

Once you see the board bending a little bit then it’s you know

I'm not saying this cannot be calculate. Like when you have a 10KG washing machine, do you weight every time you wash? Common sense apply here.

The supported weight need to include how it is install and the material it is installed onto, not that easy even if the manufacture did mention the supported weight of said product.

The installer was right, heavy at the bottom and light at the top.