ᐅ How do I create a slope like this, and what is the best way to compact it?

Created on: 4 May 2018 08:33
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Evolith
Hello,

maybe some of you still remember our 42m (138 feet) long slope, which we initially wanted to stabilize with something solid at a 90° angle. Since all those solutions would exceed our budget, we decided to do it the natural way and create a slope that will be planted with groundcover bushes. We will be receiving soil in the next few days to shape the slope (there is still quite a bit of soil missing to reach the border).

Now the question: Do I need to compact the soil specifically? Can I do this with a wheelbarrow, shovel, and manual tamping, or does it have to be done with an excavator?

Then a slope stabilizing net or mat will be laid on top to prevent soil erosion. Do you have any tips on what works well and is affordable?
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Evolith
5 May 2018 08:48
Thank you. Well, a shovel and wheelbarrow will do. A planting ring is a bit heavier though. I’ve already carried and rolled so many of them by myself. We’ve roughly secured our low slope with them.
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BratacDD
5 May 2018 09:00
Don’t underestimate the amount of material you need to move. A wheelbarrow is just a drop in the ocean. I would look for someone who can operate a mini excavator and shape the slope to the desired gradient. You might be able to do the topsoil spreading yourself, but if the excavator is already there, it can also distribute the soil evenly, and then all that’s left is to smooth everything out with a rake.
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Evolith
5 May 2018 09:05
BratacDD schrieb:
Don’t underestimate the volumes you have to move. A wheelbarrow is just a drop in the bucket. I would find someone who can operate a mini excavator to shape the slope to the desired angle. You might be able to handle spreading the new soil yourself. But if the excavator is there anyway, it can also distribute the new soil, and then you only need to smooth everything out with a rake.
Oh, don’t worry, we’re not underestimating it. We’ve already spread 95 cubic meters (124 cubic yards) by hand. So I know how much work that involves.
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HilfeHilfe
5 May 2018 09:09
Ok, I didn’t know that, so I wouldn’t do it myself. Personally, I don’t like the round grey plant rings. I’d prefer to edge them with natural stones instead. Of course, that costs a certain amount.
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ypg
5 May 2018 09:34
HilfeHilfe schrieb:
Ok, I didn’t know that, so I wouldn’t do it myself. Personally, I don’t like the round gray plant rings. I’d rather use natural stones to border them. That just costs amount x

They are also available in square shapes – which gives a somewhat more modern look. And at the back of the property, they don’t really affect the overall appearance.
11ant5 May 2018 12:54
Evolith schrieb:
Perhaps someone still remembers our 42m (138 feet) long slope, which we originally wanted to make vertical with something solid.

Yes. But I generally don’t believe in slopes steeper than 75°.
Evolith schrieb:
A slope reinforcement mesh or mat will be placed on it to prevent the soil from washing away.

I doubt that the soil will really be affected by that. I’ve never researched whether “weeds” also exist as nursery plants, but something with strong roots would most likely stabilize the soil best. Or – here’s a spontaneous idea (although my coffee doesn’t have any alcohol) – the slope could be constructed in vertical layers with alternating clay layers mixed in.

What I can’t recall: what is the purpose of the slope, and is it subjected to any load besides its own weight?

Could you sketch the intended cross-section?
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