High retaining wall - what are the options

Isn't it normal to bridge heights like this?

Hello Paminko Of course, the L-bricks are meant for that. But the substructure has to be right. And that doesn't seem to be well thought out in your case yet. Steven

How do you come to that conclusion? The substructure is of course also important to us and should be planned accordingly. I will consult a structural engineer. What do you think about gabions?

The substructure is of course also important to us and should be planned accordingly.

Hello Paminko The consultation of a specialist is important for this project. He must calculate which counter bearing is necessary for the pressure. Pouring a foundation and placing L-blocks on it will probably not be sufficient. An L-block in your size has a base projection of 170 cm and a weight of 1.8 tons. At 1 meter width. If, say, dozens of tons of pressure from the right push against the L-block and nothing holds it on the left, I fear that the L-block will tip over. Most likely, you will have to set boreholes several meters deep for the foundation. And connect the L-blocks to the foundation. There are many possibilities. They all have one thing in common: they cost a lot of money. Do you have a basement? Could the retaining wall possibly be anchored to the house? Or, to create an additional basement room, build the structure as a room, almost like a garage? Steven

No, the basement here is a living floor and is already finished. An additional building is out of the question for various reasons. I just received an offer from a structural engineer amounting to €600 gross. That sounds like a lot to me at first for such a small job. What do you think?

Hello Paminko

600 euros should be a "bargain." The structural engineer not only calculates the wall so that it holds, but also takes full liability.

Steven

I do not like gabions. They are quite expensive have a high space requirement stacking one basket on top of another is not enough for the height.