Construct retaining wall / slope stabilization cost-effectively

Alternatively, you can also install gabions. They are relatively inexpensive in themselves. The filling material then determines the final price. If you can get filling material cheaply, for example your own rocky excavation elsewhere or good prices at the local quarry, it can become lucrative. Other advantages: shelter for many animal species. No problem with water pressure.

Gabions at this height must be at least 50-80 cm wide. Filling them with stones also costs a lot.

Just think about it for a moment...

45m of wall, let's say it's 2m high everywhere, so 90m² of wall in total. With 30cm formwork blocks, you have a concrete volume of about 210 liters per m², so just about 18,900 liters. Let's round that up to 19m³, at a weight of 2.5t per m³ of concrete, that makes 47.5t of concrete – mind you, without the foundation. The material first has to be transported there, poured into the mixer, and then poured out into the formwork blocks. So you have to be pretty fit! But let's start even earlier. A formwork block weighs about 23kg, you need 8 pieces per m² of wall area, so a meager 720 pieces. Just carrying those to the back by yourself was 16.5t of material.

It can all be done, but be aware that your concrete mixer will run for a long time, you will sweat a lot, and if you don't lift loads in a back-friendly way, your back might start complaining before you even finish the wall.

Think it over! Saving is good and nice, but you won't get a wall like that for a few hundred bucks, even if you do everything yourself.

I would think about it carefully, honestly.

We built about 17m ~ for the terrace with a height of 75cm, just carrying the stones, about 15-20 of them, was a nightmare. Doable and after working hard for one weekend it was done, but it was really exhausting. We picked up cement bags with a trailer - mixer available - and also the gravel (or whatever that stuff is called) directly from the gravel plant with the trailer.

You must not forget that you are moving tons and we only had a small little wall. So if you are fit and up for it, go for it, if not - look for alternatives.

I have a bit of the impression that you wanted to build a vertical wall, over which there is then a sloped continuation; and that you did not want to anchor this wall into the slope, but only stabilize it with foundation and reinforcement.

If you actually meant it that way: that sounds to me like quite a bungling job and little sense for physics – by the way also the question of how steep a slope can be to have little risk of sliding: that has a lot to do with soil quality – and unfortunately also with its current moisture content and freezing! – involved.

I would incline the retaining wall into the slope and also anchor it in the slope as well as bend it more gently into the embankment above. With practice, this can also be designed with formwork blocks, but I would rather use planting rings.

Da ich von der Mauer nichts sehe und der Nachbar ein Kindergarten ist, wäre mir die Optik recht egal

The poor children :-(

google mal nach "beton schalungsstein Anleitung", die pdf im dritten Link sollte interessant für dich sein.

I am always amazed how many people are unaware that search result order is user- and cache-specific. I suspect that in this case we have the same hit 3 (Jasto), but it could also be different. My hit 1 is currently Zieglowski (the Pellenz is just opposite here and I am a rare cache solver).

Hello, I mixed it with my buddy within 3 or 4 days. Mixed it myself and let it cure calmly. Had material delivered from the wholesaler, mixer from my brother-in-law. But there are always some on offer. The problem with delivering [Beton] is that 1 it's a small area 2 if they dump it with an additive so it doesn't harden for several hours. And then you need a bunch of people to pour it into the stones. The mixer is the stress-free and cleaner solution. Also more cost-effective.

We are facing a similar problem. Our wall is about 50m long and approximately the last 15-20m are in need of repair. Since the property slopes slightly, the wall is 1.2m high at the highest point and gradually gets lower towards the front. Behind it there are old privet hedges and shrubs everywhere (property of the city, next to it there will be a sidewalk).

So far, I have not found a feasible and affordable solution. I have come to terms with the idea that one day we simply have to invest a lot of money and commission a large company. The wall is 100 years old and over about 8m it is already leaning slightly inward and the plaster is falling off everywhere, so it won’t hold up much longer. Since our property is quite narrow at the back of the garden, I have abandoned the idea of creating a slope. That would really cause us to lose too much land. In addition, you have to support what was there before. One cannot simply tear down the old wall... at least for us, quite a few things would have to be done first.
And we also have the problem that cars can’t access our property, at least not larger vehicles. Considering how many tons of material are needed, it’s downright crazy to do it ourselves. It requires real manpower and machinery.
There is also a streetlamp making things more difficult; we first have to get the location plans of the power lines from the civil engineering office.

I’ll be honest; such projects are really not fun; neither financially nor in terms of effort.