Execution quality of aerated concrete masonry

Hello everyone! I am interested in whether there are standards, guidelines, etc. for the execution of masonry work made of aerated concrete. I have attached a few photos of spots that caught my attention. Maybe I am mistaken, but I noticed some damaged bricks and interruptions in the joint bed. What would be tolerable and what would not? The Käfer

Hello,

I am interested in whether there are standards, guidelines, etc. for the execution of masonry made of aerated concrete.

Of course there are; nothing in Germany happens without standards

I have attached a few photos of spots that caught my attention. Maybe I am mistaken, but I notice some damaged stones and interruptions in the joint bed. What would be tolerable and what not?

Aerated concrete is a soft stone, so it can happen that it is damaged during transport or assembly. As long as suitable filling material is used, thermal bridges are avoided.

In the attachment you will find a picture from one of our current construction sites. Here you can clearly see that stone breakage cannot be avoided (the dark gray areas in the masonry have been filled).

Rhenish regards

Hello,

as Bauexperte has already written: Breaks cannot be avoided and they are unproblematic if they are properly sealed with the right material.

When looking at the pictures from you and from Bauexperte, I notice that Bauexperte worked more neatly/carefully. I have noticed something similar when looking at various construction projects in the area. Some look more like Epis, others (alarmingly many) look like in your photos and partly have large, unfilled holes between the stones.

Answer from a "sales advisor" during a shell construction inspection: That does not matter, it will be closed during plastering. Here, there were sometimes joints of 2 cm between the stones. It should not be like that...

Many greetings

Michael

Thanks first of all. I will upload a few more photos of concrete lintels and ask for comments. Can it stay like this and does it bear the load? What "bearing length" in relation to the length does the regulations require?

That definitely seems too little to me ...

Moin,

that looks very little. How much is that? 5 cm? I can't provide any specifications on that, but I would consider the overlap measurement for the bricks (should be at least 10 cm, if I remember correctly) as a minimum requirement. Even if I look at our lintels in this regard...

Best regards

Michael