What foundation is needed for a garden wall?

Hello,

I need help with my garden wall.

We have a slope in the garden and want to separate the slope from the lawn with a small garden wall.

[ATTACH alt="gartenmauer-welches-fundament-wird-benoetigt-653918-1.jpg"]84124[/ATTACH]

This is how it should look afterwards. Lawn at the bottom with a row of edging stones and a flower bed behind the wall at the top.

The wall should be about 3-4 rows of stones high, so about 60-80cm tall, and the wall will be about 10m long.

My question:

What kind of foundation is needed for the wall?

Do you need a solid concrete foundation for this or would it be sufficient to sink one row of stones into the ground and fill it with concrete?

What would be your suggestion for a foundation for such a small wall?

I need help with my garden wall.

Not only you. Do the people with their little garden walls really think that the ten millionth person with the same question would win something, a cruise with captain's dinner and a subsequent audience with the Pope? This is an FAQ with 148,237 answers!!!

would it be enough to sink a row of stones into the ground and fill it with concrete?

If you don't mind that cracks will appear after the first cold winter and the wall will tip forward after a few years due to insufficient anchoring. Rigid wall -> frost-proof foundation As a retaining wall, ensure sufficient anchoring in the ground (at least 1/3 of the total height) or an appropriate backward slope This usually results in an 80cm foundation, the bottom 20-30cm can also be made of gravel. Ensure connection between foundation and wall as well as reinforcement within the wall through adequate rebar

I naturally want the wall to last for "eternity" and not break

So did I understand correctly that we need a 60-80cm deep foundation

What would the foundation look like if done properly?

Excavate a trench about 60-80cm deep

at the very bottom only gravel and compact it (an SDS Max compactor can be used for this with a demolition hammer or?)

should a concrete layer then be poured or should we lay a stone layer and fill it with concrete (they are hollow inside after all)

Sorry I don't know much about this

How would the foundation look if you do it properly?

As already said, for example and others, the answers are the same every week and overall more numerous than the green cards in the "Zimmer frei !" audience voting.

You dig a trench 80cm deep. The foundation should be wider than the wall. For example, wall width 20cm, foundation then 35-40 cm or so.
You fill the trench with 20-40 cm of gravel and compact it layer by layer. If you have a tamper, it can probably handle the 40cm in one go. If you compact by hand, then rather in 5cm layers.
You pour concrete (not mortar or something like that, but concrete – google it if necessary) onto the gravel, up to about 15-20cm below the lawn level. In the concrete (or of course beforehand in the trench) you place reinforcement mats, which you connect with reinforcement bars. Every few cm (depending on how long your stones are) you let reinforcement bars stick out on top. Better too long than too short, you can always cut them off.
After it has hardened, you set the first row of stones at the same time as the lawn edging stones. For this, you preferably take earth-moist trass cement with sand (1:4), lay a first layer about 3-5 cm thick with a trowel or shovel. On top, place the stones level, tap them in a little, and mortar a back support in front, which ends just below the lawn surface. If grass is supposed to be right next to it, make it steeper, if not, let it slope off more gently.
Best regards and good luck!