screwing into a stud wall/plasterboard

[thetyreman]

I'm just wondering on what wall plugs are best for this? I have some shelving I plan on hanging on a hollow stud wall that's plasterboard, I know it's not the best idea but my brother who I'm making it for insists it has to go on the stud wall, I'm concerned it's just going to rip out and possibly even tear the wall down...

 

[MikeG.]

Fix into the studs. Forget trying to hang shelves on plasterboard alone.

 

[thetyreman]

Fix into the studs. Forget trying to hang shelves on plasterboard alone.

that's what I thought, trying to convince him to do it my way which was originally going on a proper solid brick wall is close to impossible though, I'm very annoyed at him because it's custom made, I'm actually livid, it's by far the most annoying job I've done so far, without getting into a rant it's not going well.

 

[transatlantic]

These might help?

https://www.youtube.com/watch?v=16iMtU-uk6Q
https://www.youtube.com/watch?v=6OUqyMPX-As

 

[Nelsun]

If he won't be told, just pop it on the wall with a couple of headless nails and walk away (quickly) (hammer)

 

[MikeG.]

How long are the shelves? If they're more than 400 long, and you have a bit of freedom as to where to place them, then you should be able to fix into 2 studs.

 

[MikeG.]

These might help?

https://www.youtube.com/watch?v=16iMtU-uk6Q......

That's a really silly test. Nothing is trying to pull fixings out at 90 degrees to the wall. The forces should be 90 degrees from that test, parallel with the plasterboard. There is a rotational moment about the fixing, and that is simply not tested there. Real life tests these things, and shelves just don't hang successfully on plasterboard.

 

[thetyreman]

the heavier duty ones do look a bit better, I designed it to fit the brick wall that he no longer wants it on :roll:

I'm planning on attaching the shelves using brass plates that are inlayed into the back side of the wood like this:
https://paulsellers.com/2018/06/making- ... -them-vid/

I want it to be flush with the wall, it's for displaying lightweight items but they're 2 meters wide made from pine which cuts down on the weight but still pretty heavy even without stuff on it.

 

[MikeG.]

Two metres? Well there's no issue then. Simply find the studs and locate your fixings appropriately. The studs will be at 400, 450 or 600 centres, typically.

 

[transatlantic]

These might help?

https://www.youtube.com/watch?v=16iMtU-uk6Q......

That's a really silly test. Nothing is trying to pull fixings out at 90 degrees to the wall. The forces should be 90 degrees from that test, parallel with the plasterboard. There is a rotational moment about the fixing, and that is simply not tested there. Real life tests these things, and shelves just don't hang successfully on plasterboard.

Did you watch the video? (Just asking as you seem to often give an opinion before watching things)

 

[MikeG.]

......Did you watch the video?

Yes. Both videos, actually. How else do you imagine I was able to comment on the design of the test rig they were using?

(Just asking as you seem to often give an opinion before watching things)

Interesting comment.

 

[transatlantic]

......Did you watch the video?

Yes. Both videos, actually. How else do you imagine I was able to comment on the design of the test rig they were using?

(Just asking as you seem to often give an opinion before watching things)

Interesting comment.

Then you would have heard him explain why he was testing it the way he was?

Sent from my SM-J510FN using Tapatalk

 

[Robbo3]

Ultimate Handiman

Plasterboard Fixings Test
- https://www.youtube.com/watch?v=ECDysfNhx_E

Heavy Items
- https://www.youtube.com/watch?v=glzwY76O0d8

Plasterboard fixings- The good, the bad and the useless!
- https://www.youtube.com/watch?v=mIEY3E4fiDk

 

[MikeG.]

All fascinating stuff, no doubt, but here there are at least three and possibly up to 5 studs into which these shelves can be fastened. The pull-out strength of screws into studs isn't 10-ish kg as per plasterboard, but probably 30, 40 or 50 times that. The screw is more likely to shear than to pull out of timber, I reckon.

 

[eezageeza]

Hee hee, looks like this one could run and run...

For what its worth, over the years I've screwed all sorts of shelves and cabinets (some of them properly heavy) to plaster board walls, using nothing more than plastic cavity wall plugs. None have failed.

The huge majority of force from a shelf/cabinet is downwards (as Mike says) and plasterboard is pretty strong in that direction.....

 

[MikeG.]

.......For what its worth, over the years I've screwed all sorts of shelves and cabinets (some of them properly heavy) to plaster board walls, using nothing more than plastic cavity wall plugs.......

Have you ever chosen to do this when you could just as easily have screwed into the studs?

Of course not, and hence my incredulity that people are still talking about plasterboard fixings when this 2 metre long shelf can easily be screwed into the studs.