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LD50

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These kids are all different. I mean, Stevie Ray Vaughan , Clapton, Slash etc etc

 

biometrics

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Have a vague drunken memory of stumbling and hitting my left chest against the balastrade on the way to bed. Ribs a bit sore on the left today. That's what happens when you go to the pub at 2 pm.
 

biometrics

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Somewhere we spoke about expansion grooves in foundations and cracks in tiling. Well check the crack next to the expansion groove @Spizz

IMG_20210424_175014.jpg
 

Spizz

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I’m trying to get some context and see what and where this is. It looks like a cosmetic groove in plaster or cement or whatever material it is, with no actual proper expansion joint behind it. I simply just can’t figure out why that crack would be there if it was a functional expansion joint.

Can you explain where it is and what materials I’m looking at both in the surface and behind the render, and send some more pics?
 

biometrics

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I’m trying to get some context and see what and where this is. It looks like a cosmetic groove in plaster or cement or whatever material it is, with no actual proper expansion joint behind it. I simply just can’t figure out why that crack would be there if it was a functional expansion joint.

Can you explain where it is and what materials I’m looking at both in the surface and behind the render, and send some more pics?

Unused foundation on the south side outside. Seems they threw one gigantic slab.
 

Spizz

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Unused foundation on the south side outside. Seems they threw one gigantic slab.

Okay. So if they made a big slab, to control the cracks you need to grind into the slab in straight lines roughly in 25m2 chunks, depending of course on the shape of the slab. But yeah if the slab is 100mm thick say, you’d need to grind a line at least 25-35mm into the slab with a cutting disk and that would control the crack as the concrete would tear there at the weakest (thinest) part as the concrete contracts.

It looks like in this case they have cast a slab and just made a cosmetic line just a few mm deep to make it look nice, but not actually functional as an expansion joint as it is not deep enough to attract the crack.
 

biometrics

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Okay. So if they made a big slab, to control the cracks you need to grind into the slab in straight lines roughly in 25m2 chunks, depending of course on the shape of the slab. But yeah if the slab is 100mm thick say, you’d need to grind a line at least 25-35mm into the slab with a cutting disk and that would control the crack as the concrete would tear there at the weakest (thinest) part as the concrete contracts.

It looks like in this case they have cast a slab and just made a cosmetic line just a few mm deep to make it look nice, but not actually functional as an expansion joint as it is not deep enough to attract the crack.
Ah, good to know.
 
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