Attaching perforated band in ceiling, for studs

[stefand]

I have set up all the frames to lower the ceiling. But right now everything is just hanging in the frame around the walls. So I need to use strapping to secure the rest. I have learned that you cannot use plastic plugs. But the alternatives do not seem to be easy to find. It is suggested that they are too weak?

But what I have found are these.
https://www.essve.se/essvese/sv/metallspikplugg-spix-46

[URL]https://www.biltema.se/bygg/fastelement/spik/expanderspik-2000024274[/URL]

Are these the options available and which one is best?

The ceiling is about 3.6x6m. How many fasteners do I need to install?

 

[plåtrickard]

Yes, the first question is what kind of material the ceiling you are attaching to is made of? .. The second question is why can't you use regular plugs?

 

[stefand]

It is a concrete ceiling, I must have missed that. If it starts to burn, the plastic plug melts and the ceiling can collapse, is what I have read.
Therefore, you should use some metal variant.

 

[7ender]

Search for expanderbult.

 

[Matti_75]

The Spixen you linked works excellently. Easy to use but difficult to remove if needed. If you want to be able to dismantle, I would go for concrete screws.

 

[C.Lundin]

Concrete screw without a doubt.
You still have to drill holes, so why not just as well insert a screw without a plug that you can then remove if you need to.

 

[putte22]

It is true that the plastic plug melts in a fire. But if the fire is strong enough to melt all the plastic plugs, then there are other problems than the roof.

 

[stefand]

Thank you.

What size screws and how many might be needed? It's a hell of a grind to drill upwards into concrete, so I don't want to have to drill 50 holes 10cm deep if 25 holes 5cm deep are sufficient.

 

[putte22]

Thanks.

What dimensions for the screw and how many are likely needed? It's a tough job drilling upwards into concrete, so I certainly don't want to have to drill 50 holes 10cm deep if 25 holes 5cm deep would suffice.

How big..? Why not drill directly through the wooden beam and drive the plug through the beam directly into the concrete?

 

[stefand]

How big..? Why not drill directly through the wooden beam and push the plug through the beam directly into the concrete?

Because the ceiling is not completely horizontal, so in some places, I have a gap between the ceiling and the beam.

The ceiling is 3.6x7m (I wrote it wrong in the first post), and I have used 70x45 beams.

 

[putte22]

Because the ceiling is not completely horizontal, in some places I have a gap between the ceiling and the frames.

The ceiling is 3.6x7m (I wrote incorrectly in the first post), and I have used 70x45 frames.

put in some masonite where it gaps. or don't put in plugs/screws fully where it gaps..

 

[stefand]

Yes, I could do that.

But the question remains, what dimension and how many? =) Because it shouldn't be affected by how I attach the studs, if we consider how much of the screw needs to go into the concrete, and disregard the part that is just in the stud.

 

[putte22]

Yes, I could do that.

But the question remains, which dimension and how many? =) Because it shouldn't be affected by how I attach the studs, if we consider how much of the screw needs to go into the concrete, ignoring the part that is just in the stud.

I was thinking about this one, which is approved for the ceiling. There are several manufacturers. We use it when mounting a strap from the ceiling. http://www.gunnebofastening.se/produkt/?product_id=748&family_slug=expander-och-plugg. When we hang ceilings from straps, it is plugged on 120x120cc plasterboard, like 90x120cc.

 

[stefand]

Yes, it was a similar one I linked to in my first post. Does it not need to be deeper than 4 cm?

But I don't quite understand your cc measurements =)

Or should it be interpreted as on the first beam, 120 cm out from the short side, I set 3 plugs with 120cc (the width is 3.6m). Which would give me about 6 beams (the room is 7 meters deep) with 3 plugs on each beam?

 

[putte22]

We use the 5mm variant depth 30 in concrete.. Well, maybe a bit sloppy.. but when we install the bearing structure for utak, we use the module system where the bearing rails are set at a width of cc120 and they are hung in perforated tape or similar at 120cc or with gypsum 90cc but still 120 width..you can do as you think and screw the "intermediate studs" with angles into the load-bearing studs..