Excavate a 5m x 5m x 5m pit with a mini excavator

That I have to shore up the pit is clear, otherwise it will collapse again, so I think I roughly know what I am doing, I just wanted to exchange ideas with someone who has already dug a deeper pit.

But maybe I am in the wrong forum here.......

I would contact the Rio Tinto Group if I were you. If anyone has expertise, it's them...

A professional for deep pits is, for example, the undertaker. Usually a rather taciturn fellow, who is not really interested in exchanging ideas. As a tutorial video for self-study and preparation for unexpected turns, for example, "Buried" works very well. The bereaved can also use the events as a template for a continuation of the popular series "six feet under." Therefore: All the best. And don’t be discouraged: a man must do what a man must do.

That I have to shore up the pit is clear, otherwise it would collapse again, so I think I roughly know what I'm doing there, I just wanted to exchange ideas with someone who has already dug a deeper pit.

But maybe I'm in the wrong forum here.......

It does not necessarily have to be shored up. You can also work with slopes and berms, which is even allowed or required.

An alternative would be a sheet pile box or bored piles.....

Nevertheless, I would like to know where this is taking place. Excavating a construction pit of probably well over 200m3 with a 2.5-ton excavator is not something you see every day.

That I have to shore up the pit is clear, otherwise it would collapse on me again, so I think I roughly know what I’m doing there, I just wanted to exchange ideas with someone who has already excavated a deeper pit.

But maybe I’m in the wrong forum here.......

And due to my profession, I am currently having several pits excavated ranging from 2000 to just under 4000m3. In that respect, your sandbox with the associated excavator and its question is not necessarily wrong here.

Hi,

So groundwater is apparently not the problem!

In our soil survey, water was encountered in the test drillings at a depth of just under 4 meters. Are you sure that groundwater is not an issue?

Kermit