Hello everyone, I want to replace the shelves in my Billy bookshelf because some are damaged, and at the same time, I want to use slightly sturdier boards. What technical and practical aspects should I consider? Are there differences in shelf boards regarding material thickness or supports? Also, what about the load capacity if I plan to store heavier items? I would appreciate any detailed information, as I want to avoid the shelf becoming unstable or buying the wrong boards.
I replaced the shelves in my Billy bookcase with thicker solid wood boards. It was important to accurately match the drill holes for the pins; otherwise, installation becomes complicated.
Make sure to consider the load-bearing capacity, as the bookcase is intended exclusively for books, so avoid overloading it.
Make sure to consider the load-bearing capacity, as the bookcase is intended exclusively for books, so avoid overloading it.
A brief addition: If you make the shelves thicker, it might be necessary to measure the top and bottom shelf edges, as the gripping height and thus the stability of the shelves can change. The height of the shelf inserts should also be adjusted accordingly, otherwise they may not fit properly. For heavier loads, it is also advisable to check the side panels for any potential strain and stability.
Thanks for the tips so far! I have a question: What is the best way to calculate or estimate the load-bearing capacity of a single shelf? I plan to put heavy binders on one of the shelves (about 12–15 kilograms per binder) (approx. 26–33 pounds), possibly 4–5 of them. Are the standard BILLY shelves sufficient for this, or would it be better to use reinforced boards? Also, is there a simple way to measure the thickness of the wood on site if I buy used boards?
Curtissi schrieb:
How can I best calculate or estimate the load capacity of a single shelf?Hey Curtissi, that’s a really good question! Basically, the load capacity depends on the thickness, type of wood, and length of the shelf. IKEA states about 20 kg (44 lbs) for BILLY shelves, evenly distributed.
With your planned heavy binders, that’s already close to the limit. Reinforced shelves or additional supports underneath the board are therefore a good idea 👍. Thicker MDF boards (around 22–25 mm (0.9–1 inch)) are also more stable. You can easily measure the boards on site with a caliper (which is quite affordable).
Curtissi schrieb:
Is there a simple way to measure the thickness of wood on site if I buy used boards?Yes, you can use a ruler or, better yet, a caliper if you have one. Most hardware stores and even IKEA offer these tools if you don’t own one.
Regarding load capacity: it is usually given with a safety margin. This means if it says 20 kg (44 lbs), it often can hold a bit more. However, for heavier loads, I recommend choosing thicker boards or, if possible, reinforcing the shelf with additional supports.
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