12
1.
Dig a
1000 x 1000 mm
pit with a
depth of 1430mm (PIC. 1). If the foundation box is equipped with immersion
pump, dig a pit with a depth of 1730 mm (see drawings at page 6)
.
2.
Ensure that the ground for inserting a bollard has good permeability (Note section at chpt. 5.2).
NOTE:
read the paragraph "inspection and preparation", chpt. 5.1.
3.
Fill with gravel up to
approx. 300 mm high
(grain size 8 – 20 mm). Compact the gravel to prevent the bollard from
settling later on
(PIC. 2)
.
4.
Fix the foundation anchors properly to the foundation box
5.
Place the foundation box in the pit, together with counterframe and foundation anchor:
• align the foundation box in accordance with the passage direction, as stated on the frame
(PIC. 5)
.
• position the foundation box exactly vertical
.
(PICs. 2 and 4)
.
(PIC. 2)
• in order to position the foundation box at the right height, backfill the foundation box with gravel or remove
gravel. Make sure that the frame is
10 mm higher
than the road. This will restrict rainwater penetration into
the foundation box
(PIC. 3)
.
• when fitting several foundation boxes, ensure that they are all turned in the same direction and precisely aligned
(PIC. 6)
.
6.
Fill the space around the foundation box with gravel up to approx.
200 mm
to avoid any obstruction of the drainage
holes, placed at the bottom of the pit, during the concrete casting .
7.
Lay a flexible ø 50 mm tube from each foundation box to carry the connecting cable from the bollard to the control
unit
(PICs 2 and 4)
.
WARNING!
If the foundation boxes and the control unit are more than 10 m apart, please order the bollard
with extended connecting cable (standard length 10 m – optional up to max. 80 m ).
8.
When fitting foundation boxes with immersion pump, connect a flexible ø 25 mm tube from each foundation box
to the sewer system or similar.
9.
Cast the concrete up to
approx. 100 mm under the ground surface
(the height depends on the type of road
surface).
NOTE:
cast the concrete in two working steps to prevent the liquid concrete from pushing the foundation box up.
Compact the concrete.
10.
When using accessories (e.g. induction loops, traffic lights, key switch post), lay a flexible ø 50mm tube from
the control unit to the corresponding fitting position of the accessory.
11.
Apply the road surface once the concrete has dried.
All the pipelines shall be laid in full compliance with the regulations in force.
5.3 - DIGGING THE PIT
DPT280
UK