Hello everyone!
We are now in our little house, and every day I spend several hours in the garden shoveling gravel and soil in various directions. But it’s about time we start thinking about supporting our terrain.
We need to retain a length of almost 42 meters (138 feet). The height will be about 1 meter (3.3 feet). We’ve already talked to a relative who is quite knowledgeable about this kind of work. He recommended simply building a formwork (50 cm (20 inches) deep into the ground and then 1 meter (3.3 feet) high) and pouring concrete into it—of course including reinforcement. This should be significantly cheaper than using L-shaped concrete blocks.
So far, so good.
However, I’m a bit hesitant about having to get all the OSB boards. We thought about pouring in 2 meter (6.5 feet) sections and then reusing the boards each time, but I’m still not really happy with that idea.
Now I’ve seen that formwork can also be rented. Somewhere I saw a picture of a curved formwork (which would also be a curve in our case). Does anyone have experience with this? Can anyone recommend something? Or do you have a completely different approach?
We are now in our little house, and every day I spend several hours in the garden shoveling gravel and soil in various directions. But it’s about time we start thinking about supporting our terrain.
We need to retain a length of almost 42 meters (138 feet). The height will be about 1 meter (3.3 feet). We’ve already talked to a relative who is quite knowledgeable about this kind of work. He recommended simply building a formwork (50 cm (20 inches) deep into the ground and then 1 meter (3.3 feet) high) and pouring concrete into it—of course including reinforcement. This should be significantly cheaper than using L-shaped concrete blocks.
So far, so good.
However, I’m a bit hesitant about having to get all the OSB boards. We thought about pouring in 2 meter (6.5 feet) sections and then reusing the boards each time, but I’m still not really happy with that idea.
Now I’ve seen that formwork can also be rented. Somewhere I saw a picture of a curved formwork (which would also be a curve in our case). Does anyone have experience with this? Can anyone recommend something? Or do you have a completely different approach?
Hello RobsonMKK
That's correct.
But formwork also costs money. And as a layperson, creating formwork to build a retaining wall like that isn’t exactly easy.
The cost of concrete (if mixed yourself) isn’t that high. I estimate that around 4-5 m³ (5.2-6.5 cubic yards) of concrete fits into the concrete blocks. The cost for concrete aggregate is about 20 euros per m³ (27 USD per cubic yard). Reinforcement should be sufficient for around 100 euros (130 USD).
Steven
That's correct.
But formwork also costs money. And as a layperson, creating formwork to build a retaining wall like that isn’t exactly easy.
The cost of concrete (if mixed yourself) isn’t that high. I estimate that around 4-5 m³ (5.2-6.5 cubic yards) of concrete fits into the concrete blocks. The cost for concrete aggregate is about 20 euros per m³ (27 USD per cubic yard). Reinforcement should be sufficient for around 100 euros (130 USD).
Steven
We have now received an offer. For 2000€ we get everything.
Reinforcement is very cheap at 40 euros.
Concrete for the foundation (8 cubic meters) costs 500 euros.
The bricks are expensive. 1400 euros. They charge 3.6€ per brick.
Where could I get bricks that are both cheaper and of good quality?
Reinforcement is very cheap at 40 euros.
Concrete for the foundation (8 cubic meters) costs 500 euros.
The bricks are expensive. 1400 euros. They charge 3.6€ per brick.
Where could I get bricks that are both cheaper and of good quality?
Well, OBI and Bauhaus sell them for 2.70. But then the stone is not yet delivered to you. And since you need more than 10 pieces, transporting them by car is probably not an option. If they charge 100,- for delivery, you quickly reach the 3.60 price of your offer.
You could search through Ebay Classifieds again, but there the transport issue still needs to be solved. For example, Betonwerke Nord charges 4,- per stone delivered to the construction site when ordering a pallet of 44 pieces or multiples thereof. So the 3.60 does not seem excessively high. Karsten
You could search through Ebay Classifieds again, but there the transport issue still needs to be solved. For example, Betonwerke Nord charges 4,- per stone delivered to the construction site when ordering a pallet of 44 pieces or multiples thereof. So the 3.60 does not seem excessively high. Karsten
Hello Evolith
that is really very affordable. Actually for a frost-protected foundation and a 1 meter (3.3 feet) high retaining wall. And all fully constructed?
With 8m³ (10.5 cubic yards) of concrete and an approximate area of 12m² (129 square feet), that would mean the foundation is about 66cm (26 inches) thick. That’s solid. I would do at least that myself, but with a company and at that price.
Which blocks were specified? And in what dimensions?
Steven
that is really very affordable. Actually for a frost-protected foundation and a 1 meter (3.3 feet) high retaining wall. And all fully constructed?
With 8m³ (10.5 cubic yards) of concrete and an approximate area of 12m² (129 square feet), that would mean the foundation is about 66cm (26 inches) thick. That’s solid. I would do at least that myself, but with a company and at that price.
Which blocks were specified? And in what dimensions?
Steven
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