15mm sheet on concrete floor.

[MoggeS]

I'm going to lay out a 15mm (76x62 cm) plate on a concrete floor. The problem I have right now is that there's a gap of about 0.5mm in one corner, which means the plate is not completely flat. It can wobble, which it shouldn't. I've sanded and laid out concrete filler and sanded to try to get a completely flat surface, but it's not quite working.

Does anyone have a suggestion on how to do this? I'm considering pouring out concrete filler or something similar with 0-fraction and laying the plate directly into the "mixture". With this method, I only get one try but it should work. Any tips?

 

[Mattias_Eson]

It cannot be placed in combed fix? There are many different variants depending on the application area.

 

[Casaloco]

maybe try putting the plate in some regular tile adhesive?

edit: second on that

 

[tommib]

You probably need to describe in more detail what the sheet is for. Why shouldn't it tilt? Is the height of the sheet in relation to something else important? Should the sheet be absolutely level horizontally?

 

[MoggeS]

Ok, here comes some more information. The plate is a load distribution plate for a chimney, so it will be loaded with a weight of about 900-1000kg. Preferably, I don't want to raise the plate too much as it will come to the same level as the floor when laid. The plate does not need to be flat horizontally, only that it lies flat on the concrete floor. Tile adhesive might work; need to check the compressive strength of the adhesive and what the minimum notching that can be used.

 

[Plupp 173289]

Sealing tape/tar paper for base plate.

 

[tommib]

Hmm....

The question is whether the sheet will be pressed into place by the chimney when it finally gets there if the difference is only half a millimeter. Otherwise, tile adhesive is as good an idea as any.

 

[icho]

Check out weber lagningsmassa fin. Can be applied from 0-15mm. 20 mpa compressive strength so you don't have to worry about that.

 

[MoggeS]

I think after your posts that I will take the courage and try with fix alternative concrete filler tomorrow. I'll get back with the results

 

[Deathtrip2000]

Ok, here comes some more information. The plate is a pressure distribution plate for a chimney, so it will be loaded with a weight of about 900-1000kg. Preferably, I don't want to raise the plate too much as it will come to the same level as the floor when it is laid. The plate does not need to be level in a horizontal direction, only that it lies flat on the concrete floor. Tile adhesive might work, need to check what pressure resistance the adhesive has and what the minimum trowel notch is.

What do you mean? Isn't your floor horizontal?

Is it the floor, or the plate, that is less flat?
Should the plate lie loose on the floor, or should it be attached in some way?

 

[prototypen]

But what kind of junk concrete floor can't handle a 1000 kg load?
How much bigger is the sheet compared to the chimney? The measurements of the sheet were so unusual, is the sheet the same size as the chimney?
Are there regulations/instructions that say there MUST be a pressure distribution plate?

Seems a bit overworked to me.

Protte

 

[fsn]

But what kind of junk concrete floor can't withstand a 1000 kg load?
How much bigger is the plate compared to the chimney? It was such odd measurements on the plate, so is the plate as big as the chimney?
Are there any regulations/instructions saying it MUST be a pressure distribution plate?

Seems a bit overkill.

Protte

Can only agree. 15mm plate sounds overdone, that's a 55kg plate.

 

[MoggeS]

I can only agree with you. If I had avoided the sheet metal, everything would have been fine and dandy. It's my K-constructor who wants it there... he forgot to draw in notches in the cell plastic, and the fact that the chimney comes 15 cm from a weakening in the slab means we now have to use the sheet metal. I also don't think there are any problems skipping the sheet metal, but it's best to comply...