Concrete Foundations

With or without graduation

Stepped Concrete Foundation

A reinforced concrete slab on a gravel base is a high-quality foundation option.
Dig below the frost line (approx. 60 – 80 cm deep, depending on the region), then fill and compact the excavated area with gravel (grain size up to 35 mm). Then level with gravel (grain size up to 6 mm) up to a thickness of approx. 3-5 cm. The vapour barrier (plastic membrane at least 150 μm thick) is laid in this levelling fill. The concrete foundation with 1 to 2 layers of structural wire mesh is placed on top of this. The concrete slab should be approx. 10 - 15 cm thick.

The stepped foundation slab, with a circumferential step of 2 x 7 cm, is an ideal design. The floor frame is attached to the surface using the screws and anchors supplied.

Please note that the use of the aluminium floor frame is not possible with the stepped concrete foundation. Furthermore, it is not necessary to apply a sealing compound for sealing.

Work steps

  1. Frost-proof excavation of the building site
  2. Construct the gravel base
  3. Apply levelling fill
  4. Lay vapour barrier
  5. Pour the foundation
Shed size Width in cm Depth in cm Foundation plan
HS 257 137 Concrete foundation plan HS / H1

H1

137 257 Concrete foundation plan HS / H1
H2 257 177 Concrete foundation plan H2
H3 257 217 Concrete foundation plan H3
H4 257 257 Concrete foundation plan H4
H5 257 297 Concrete foundation plan H5
H6 297 297 Concrete foundation plan H6

 

 

All foundation plans are available in our download area.

Shed size Width in cm Depth in cm Foundation plan

P1

257 137 Concrete foundation plan P1
P2 257 177 Concrete foundation plan P2
P3 257 217 Concrete foundation plan P3
P4 257 257 Concrete foundation plan P4
P5 257 297 Concrete foundation plan P5

 

All foundation plans are available in our download area.

Shed size Width in cm Depth in cm Foundation plan

A1

177 177 Concrete foundation plan A1
A2 177 217 Concrete foundation plan A2
A3 177 257 Concrete foundation plan A3
A4 177 337 Concrete foundation plan A4
A5 257 177 Concrete foundation plan A5
A6 257 217 Concrete foundation plan A6
A7 257 257 Concrete foundation plan A7
A8 257 337 Concrete foundation plan A8

 

All foundation plans are available in our download area.

 

All foundation plans are available in our download area.

Size Width in cm Depth in cm Foundation plan

150

155 83 Concrete foundation plan 150
230 227 83 Concrete foundation plan 230
300 299 83 Concrete foundation plan 300

 

All foundation plans are available in our download area.

Width in cm Depth in cm Foundation plan

145

203 Concrete foundation plan

 

All foundation plans are available in our download area.

Alternative: Flat Concrete Foundation

As an alternative to the stepped concrete foundation, a continuous flat concrete slab can also be poured.

Construction is carried out - except for the step in the foundation - as with the stepped concrete foundation described above.

The aluminium floor frame, available as an accessory, facilitates the levelling of any foundation unevenness and the application of the sealing joint. The aluminium floor panels (underlaid with 2 - 3 cm thick XPS rigid foam panels) can be installed in combination with the aluminium floor frame.

Work steps

  1. Frost-proof excavation of the building site
  2. Lay the gravel base
  3. Lay levelling fill
  4. Lay vapour barrier
  5. Pour foundation

Please also note the above-mentioned concrete foundation plans for this option.


Note: These foundation tips are non-binding suggestions. The customer is personally responsible for choosing an appropriate foundation design. Biohort cannot accept any liability for damage caused by insufficiently secured products.