Hang machine on wall double drywall….

[kribban]

Hello

we need to mount a machine on a wall. The wall consists of double gypsum with plywood behind it. The machine weighs 65kg and has an outward-opening hatch, the hatch opens at the top and tilts outward, where equipment to be cleaned is placed. This equipment weighs max 5 kg.

So we have a total weight of 70 kg. Max screw length is 40 mm. We must not screw through the plywood and the machine's weight is supported at the top.

There are 4-6 mounting points and the width of the machine is 45 cm, depth 55 cm, height 85 cm.

Do you have any tips on a suitable screw for this purpose?

 

[Cerb]

Can't imagine it will work particularly well regardless of which skruv you choose.

 

[Dan_Johansson]

Is it some form of clean room?

It might be appropriate to distribute the weight over a larger area, with some form of board, or perhaps a stand that goes from the floor up...

 

[AG A]

What/who says that the screws can't be more than 40mm?

 

[Rickard.]

Very difficult to screw into plywood in a sensible way without going through, it's just the tip in the wood then. Why can't it go through?
Can/may you screw from the back?

 

[kribban]

Is it some kind of cleanroom?

It might be appropriate to distribute the weight over a larger area, with some kind of board, or maybe a stand that goes from the floor up...

yes it is a type of cleanroom

 

[kribban]

What/who says the screws cannot be more than 40mm?

the contractor

 

[kribban]

Very difficult to screw into plywood in a sensible way without going through, it will just be the tip in the wood then. Why can't it go through?
Can/can you screw from the back?

there are pipes in the wall. There's no possibility to screw from the back

 

[kribban]

Is it some form of cleanroom?

It might be appropriate to distribute the weight over a larger area, with some form of board, or perhaps a stand that goes from the floor and up...

stand or base is unfortunately not an option due to hygiene reasons

 

[fahlis]

Hang in pendants from the ceiling?

 

[AG A]

the developer

Because there are pipes in the wall?
But there aren't pipes everywhere, and someone should have some idea of where they are, or be able to figure it out.

 

[mojjen]

Can't the pipes be located with a professional wall scanner? They can be rented.

I would never dare to place that weight without going through.

If you are a contractor for the builder, you should decline the assignment if you can't do a safe installation. You could be criminally liable if the machine falls and injures someone.

 

[kribban]

A suggestion has been to pre-drill 3 mm and a maximum of 38 mm deep and use an "Ikea" screw like this:

https://www.hornbach.se/shop/Koppli...5x40mm-100-pack/7750475/artikel-detaljer.html

I have a hard time seeing that this will hold, but I'm not an engineer.

 

[kribban]

Can't you locate the pipes with a professional wall scanner? They are available for rent.

I would never dare to place that weight without proper verification.

If you're a contractor for the builder, you should decline the assignment unless you're allowed to conduct a secure installation. You could be criminally liable if the machine falls and injures someone.

That's what worries me. I'm sorry I can't give you more information, but it's a delicate issue.

 

[roli]

There must be studs in the wall to attach to, right? And if the placement of the studs doesn't match the mountings on the machine, then you can place an additional panel on the front of the wall to "link" between the studs and the attachments. It's always easy for a client to set up a bunch of requirements that can't be lived up to...