ᐅ Are Additional Costs for Building on a Sloped Plot Predictable?
Created on: 3 Dec 2019 07:46
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BauherrFranken
Supply and demand are currently driving our frustrating search for a plot of land. We have finally found one, but it is being offered privately at a price well above the official land value estimates.
It is a south-facing slope plot, located above the street. Would you consider the additional costs related to the hillside location (site setup, excavation) to be predictable?
It is a south-facing slope plot, located above the street. Would you consider the additional costs related to the hillside location (site setup, excavation) to be predictable?
hampshire schrieb:
I would even do it that way if there was extra money. Leave the ground as undisturbed as possible where it’s untouched and enjoy the native biodiversity.Not everyone wants that. I have a large area of natural growth myself. There are plenty of birds.
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hampshire8 Dec 2019 12:55True, not everyone wants that – it is an active contribution to environmental protection. Many people do not realize that lawns, cherry laurel, and other non-native species represent a type of green desert for the local ecosystem. As always, it is a matter of balance. Of course, people should enjoy having a lawn – and at the same time provide some spaces for healthy nature.
Since retaining walls made of L-shaped blocks with a height of 3.05m (10 feet) were a topic here, I wanted to share the costs from our civil engineer for comparison.
We have a 5m (16.4 feet) retaining wall with 3.05m (10 feet) L-shaped blocks.
The quote is 4080 EUR and includes:
5 concrete retaining angles 100/305 cm (39/120 inches), wall height 305 cm (10 feet), wall width each 100 cm (39 inches), smooth surface, concrete gray, delivery to the construction site, retaining angles set in lean concrete layer of C12/15, thickness up to 10 cm (4 inches), installation including sealing of joint seams with a bituminous membrane strip, width up to 15 cm (6 inches).
Is anything missing from this quote? It seems very inexpensive to me. However, the overall prices are very good (excavation, removal and disposal of root stocks, transport, graveling, etc.).
We have a 5m (16.4 feet) retaining wall with 3.05m (10 feet) L-shaped blocks.
The quote is 4080 EUR and includes:
5 concrete retaining angles 100/305 cm (39/120 inches), wall height 305 cm (10 feet), wall width each 100 cm (39 inches), smooth surface, concrete gray, delivery to the construction site, retaining angles set in lean concrete layer of C12/15, thickness up to 10 cm (4 inches), installation including sealing of joint seams with a bituminous membrane strip, width up to 15 cm (6 inches).
Is anything missing from this quote? It seems very inexpensive to me. However, the overall prices are very good (excavation, removal and disposal of root stocks, transport, graveling, etc.).
Earthwork is a separate item.
Remove 530 sqm (5700 sq ft) of topsoil and store it on the side, with an average removal depth of 20 cm (8 inches) 950 EUR
Excavate 650 m³ (23,000 ft³) of soil for the foundation pit according to the profile and store it on the side, excavation depth up to 3.50 m (11.5 ft) 4500 EUR
Deliver and install 300 tons of limestone crushed stone free on site, layered as a base material under the ground slab, paved exterior areas, and the working space for the support angles, then compact 6900 EUR
Deliver and install 85 tons of limestone grit 8/16 mm free on site, laid in a single layer as a capillary-breaking layer under the ground slab 2650 EUR
and then some smaller items like dimpled membrane, site setup (1k), geotextile (860 EUR)
We will first store the excavation material on the property and after backfilling and terrain modeling check if there is much spoil left (probably not much).
The plot is large enough, 1400 sqm (15,070 sq ft)
Does anyone know if limestone crushed stone is better than recycled crushed stone?
Recycled crushed stone is listed as a contingency item and is cheaper than limestone crushed stone (both 0/60 grain size)
Remove 530 sqm (5700 sq ft) of topsoil and store it on the side, with an average removal depth of 20 cm (8 inches) 950 EUR
Excavate 650 m³ (23,000 ft³) of soil for the foundation pit according to the profile and store it on the side, excavation depth up to 3.50 m (11.5 ft) 4500 EUR
Deliver and install 300 tons of limestone crushed stone free on site, layered as a base material under the ground slab, paved exterior areas, and the working space for the support angles, then compact 6900 EUR
Deliver and install 85 tons of limestone grit 8/16 mm free on site, laid in a single layer as a capillary-breaking layer under the ground slab 2650 EUR
and then some smaller items like dimpled membrane, site setup (1k), geotextile (860 EUR)
We will first store the excavation material on the property and after backfilling and terrain modeling check if there is much spoil left (probably not much).
The plot is large enough, 1400 sqm (15,070 sq ft)
Does anyone know if limestone crushed stone is better than recycled crushed stone?
Recycled crushed stone is listed as a contingency item and is cheaper than limestone crushed stone (both 0/60 grain size)
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hampshire8 Dec 2019 22:27Crossy schrieb:
We will initially store the excavated soil on the property and, after backfilling and landscaping, check if there is much soil left (probably not much).
The plot is large enough, 1400 m² (15,070 sq ft). Make sure to instruct your workers to avoid driving randomly around and to minimize soil compaction as much as possible. Your garden will thank you for it.
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