ᐅ Terrace on a Sloped Site Supported by Stilts – Which Is Better: Wood or Steel?
Created on: 3 Jun 2018 15:05
Z
Zaba12
Hello everyone,
I need your input because our eastern neighbor has disrupted our landscaping plans. We had planned to stabilize the area with two rows of 1 meter (3 feet) L-shaped retaining walls. Now, our neighbor intends to build three full stories facing the garden, meaning they will want direct access from the basement to the garden.
This makes our original plan obsolete since we intended to add fill while they plan to excavate. This would leave us with 2.5 meter (8 feet) tall L-shaped retaining walls on the side, which none of us want.
So now the question is, do you have any idea what it would cost to construct the terrace on a supporting framework, possibly including the tool shed? See the screenshot. We would need to expose the basement wall facing the garden, but then we wouldn’t need to install the L-shaped retaining walls, which would cost around €26,000.
Would wood or steel be advisable?
I need your input because our eastern neighbor has disrupted our landscaping plans. We had planned to stabilize the area with two rows of 1 meter (3 feet) L-shaped retaining walls. Now, our neighbor intends to build three full stories facing the garden, meaning they will want direct access from the basement to the garden.
This makes our original plan obsolete since we intended to add fill while they plan to excavate. This would leave us with 2.5 meter (8 feet) tall L-shaped retaining walls on the side, which none of us want.
So now the question is, do you have any idea what it would cost to construct the terrace on a supporting framework, possibly including the tool shed? See the screenshot. We would need to expose the basement wall facing the garden, but then we wouldn’t need to install the L-shaped retaining walls, which would cost around €26,000.
Would wood or steel be advisable?
An L-shaped concrete block with a height of 2.55 meters (8 feet 4 inches) will cost around €430 including installation. Right now, I am more concerned about the removal of the excavated material. Our carpenter will provide us with an offer based on my sketch in the next few days. In short, steel supports with the rest made of wood. Tomorrow and Thursday, I will visit two metal construction companies to get quotes for a purely steel structure with wooden decking.
My construction coordinator mentioned that the terrace should also be waterproofed on the underside. Since this won’t be the main terrace, this will only be considered as a possible option.
As I said, everything is very exciting, and many decisions will be made in the next 1-2 weeks. The submission planning is planned to be completed in 3-4 weeks.
My construction coordinator mentioned that the terrace should also be waterproofed on the underside. Since this won’t be the main terrace, this will only be considered as a possible option.
As I said, everything is very exciting, and many decisions will be made in the next 1-2 weeks. The submission planning is planned to be completed in 3-4 weeks.
Hello Zaba12
Is it possible to access the house from the back? A 10 m³ (350 ft³) container of mixed soil here (approximately 16 tons) costs around 330 euros complete (delivery and pickup including disposal).
As mentioned, a 30 cm (12 inch) masonry wall will cost you significantly less than the L-shaped blocks. In the end, the result is the same.
Steven
Is it possible to access the house from the back? A 10 m³ (350 ft³) container of mixed soil here (approximately 16 tons) costs around 330 euros complete (delivery and pickup including disposal).
As mentioned, a 30 cm (12 inch) masonry wall will cost you significantly less than the L-shaped blocks. In the end, the result is the same.
Steven
Tomorrow and Thursday, I will visit two metal construction companies to get quotes for a pure steel structure with wooden decking. The construction coordinator insisted on this to check whether steel would be significantly more expensive. After extensive research, I have now found that the terrace structure of this size will cost about €10,000 (approximately $11,000) without steel supports. The railing costs around €5,000 (approximately $5,500), and the isolated foundation costs about €2,000 (approximately $2,200). Now, the steel supports and earthworks are still missing. At least I can estimate the excavation without major contamination (transport and disposal €15,000 / approximately $16,500). I am now looking for alternatives for this.
Steven schrieb:
Hello Zaba12
Is it possible to access the house from the back? A 10 m³ (13 yd³) mixed soil container costs around 330 euros here (approximately 16 tons), including delivery, pickup, and disposal.
As I said, a 30 cm (12 inch) masonry wall will cost you significantly less than L-shaped blocks. In the end, the result is the same.
Steven I think you have the numbers mixed up there; 1 ton is 1.6 m³ (2.1 yd³), not the other way around. Also, here an 8 m³ (10.5 yd³) container costs €539 gross, including pickup and disposal.
Excavation will already be expensive enough. For uncontaminated soil excavation, our groundworker charges €17.61 per m³ (0.76 yd³). The unfortunate thing for me is that I know our landfill charges €15 per ton. Sometimes it’s better to stay unaware.
Zaba12 schrieb:
EDIT: Another idea would be to at least form the supports using 2.55 L-shaped blocks. I strongly doubt their suitability for this purpose.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Zaba12 schrieb:
I think you have the numbers reversed there, 1 ton is 1.6 m³ and not the other way around.Hello Zaba12
No, that is correct. 1 m³ is about 1.6 tons depending on compaction.
Soil is heavier than water.
Steven
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