Preparing foundations for concrete pour - DKE110F

DKE110F User Guide
Document code
M211788EN
Revision
F
Language
English
Product
DKE110F
Document type
User guide
  • Cable conduit 525 mm (20.67 in), Ø 50 mm (1.97 in) R300 (2 pcs)
  • Hammer
  • Measuring tape
  • Pen or marker
  • Saw
  • Shovel (1 to 2 pcs)
  • Spirit level
  • Stands for reinforcement structure
  • Steel wire

  • Steel reinforcement bar TW8 18.8 m (61.6 ft) / 7.4 kg (16.4 lb) to make:

    • Reinforcement TW8 C‑shape, base rod length 1000 mm (39.37 in) Ø 8 mm (12 pcs)
    • Reinforcement TW8 straight, base rod length 850 mm (33.46 in) Ø 8 mm (8 pcs)

  • Steel reinforcement bar TW10 17.4 m (57.0 ft) / 10.7 kg (23.6 lb) to make:

    • Lift part TW10, base rod length 1050 mm (41.34 in) Ø 10 mm (2 pcs)
    • Reinforcement TW10 straight, base rod length 850 mm (33.46 in) Ø 10 mm (18 pcs)
  • Wood for building the mold

To prepare the foundations, use:

  • Foundation bolt (6 pcs)
  • Hex nut ISO4032 M20 (9 pcs)
  • Template for positioning the foundation bolts (1 pc)
  1. Make 4 cast molds from wooden boards for the concrete foundations with the following dimensions.
    • Height 50 cm (20 in)
    • Width 95 cm (37 in)
    • Length 95 cm (37 in)
    1
    Cast mold for foundation
    2
    Hole
  2. For each foundation, dig a hole with sides approximately 200 × 200 cm (80 ×80 in) and depth 100 cm (40 in).
    In a square mast foundation, the sides must be in the North/South/East/West direction.
  3. Spread a layer of gravel and level the gravel with a wooden board.

    The distance from the surface of the gravel to the ground level must be 50 cm (20 in).

    Figure 1. Example of mast foundation
    1
    Concrete foundation
    2
    Backfill
    3
    Cable conduit (2 pcs)
    4
    Drainage (optional)
    5
    Compacted gravel
    Consider the individual site requirements and use drainage pipes if the ground on the site is wet.
  4. Compact the gravel with a plane compactor or similar device.
  5. For each foundation, use:
    • Reinforcement TW8 to create 8 straight pieces, base rod length 850 mm (33.46 in)
    • Reinforcement TW10 to create 18 straight pieces, base rod length 850 mm (33.46 in)
    • Reinforcement TW8 to create 12 pieces of C shapes
    • Reinforcement TW10 to create 2 lift parts (optional)
    Figure 2. C shape and lift bar dimensions
  6. Build the reinforcement structure in the cast mold from TW8 and TW10 according to the given measurements and layout instructions.
    • Place stands under the reinforcement structure.
    • To hold the structure, use steel wire.
    2
    1
    TW10 straight (18 pcs). If no lift parts are used, 20 pcs.
    2
    TW10 lift part (2 pcs) (optional)
    3
    TW8 straight (8 pcs)
    4
    TW10 straight
    5
    TW8 C‑shape (12 pcs)
    On the top layer of the reinforcements, place the lift parts under the straight parts.
1 Guy wire foundations have one foundation bolt each and no cable conduits.
2 Guy wire foundations have one foundation bolt each and no cable conduits.