Hello,
I have items weighing a total of 40 kg that need to be placed on 2 Elfa sparring shelf boards mounted on a lightweight concrete wall with Essve 8x50mm lightweight concrete plugs (universal plugs?) and I have 6x70mm screws for them.
The shelves measure 25 x 120 cm.
How many plugs do I actually need to use? In a concrete wall, I might not have needed to use all the screw holes in the sparring strips, but perhaps it's good to have some margin?
Best regards,
Adam
I have items weighing a total of 40 kg that need to be placed on 2 Elfa sparring shelf boards mounted on a lightweight concrete wall with Essve 8x50mm lightweight concrete plugs (universal plugs?) and I have 6x70mm screws for them.
The shelves measure 25 x 120 cm.
How many plugs do I actually need to use? In a concrete wall, I might not have needed to use all the screw holes in the sparring strips, but perhaps it's good to have some margin?
Best regards,
Adam
How many rails do you use and how long are they?
In Elfa's brochure, it states the estimated load and weights:
https://se.elfa.com/wcsstore/Extend.../B2B_SE_formfunktionflexibilitet_20111216.pdf
In Elfa's brochure, it states the estimated load and weights:
https://se.elfa.com/wcsstore/Extend.../B2B_SE_formfunktionflexibilitet_20111216.pdf
The tracks are 60cm so they have 3 holes each, according to Elfa's instructions 30kg per screw is applicable (sounds like a lot) so it would be 180kg max load then.
Difficult with longer screws because larger screws have larger heads and then they no longer fit in the track's countersink.
The screw I have is 70 mm in total, which is longer than Elfa's catalog screw. Thanks for the tip about the catalog!
Difficult with longer screws because larger screws have larger heads and then they no longer fit in the track's countersink.
The screw I have is 70 mm in total, which is longer than Elfa's catalog screw. Thanks for the tip about the catalog!
The brackets often handle more than one might think, the load is distributed over a larger area, and the longer the bracket, the better the strength and higher the load capacity. I installed a set of shelves with brackets in an office storage room where both I and others were a bit unsure if they would hold. 3-4 years later, when the shelves were filled with heavy drawing binders and various reference books, they had to replace the shelves as they had started to sag, but the brackets were still holding firm.
When we set up IKEA's equivalent (Algot), we did a quick calculation on torque and concluded that our wall would hold >1000 kg (3-meter wardrobe). The screw at the top is more important than the screw at the bottom. The difficult part is not the downward weight (30 kg) but the torque that tries to pull the bracket out.
Then we have statics vs dynamics. Throwing a thick book onto the shelf compared to carefully placing it makes quite a big difference. But if you put all 9 screws in place, don't worry, it holds much more than you think.
Then we have statics vs dynamics. Throwing a thick book onto the shelf compared to carefully placing it makes quite a big difference. But if you put all 9 screws in place, don't worry, it holds much more than you think.