!
!
!
4,0 m (157,8 in)
4,0 m (157,8 in)
=
=
[A]
dimension depending on the road surface
finshing (asphalt, porphyry, concrete...)
3,0 m
(118,1 in)
1,35 m (53,1 in)
20 cm
(7,8 in)
48,5 cm
(19 in)
pic. 2
0.0
0.0
1-2 cm
English
EXCAVATION FOR POSITIONING OF THE CASING IN A CONCRETE FOUNDATION
Dig a pit in the soil of about 4x3 m (157,8x118,1 in) and about 1,8 m (70,8 in) deep from the finished road level
[A]
, as indicated
in pic. 2.
Put a layer of pebbles in the bottom for rain water to soak away. Should rain water drainage be difficult in the bottom, create
a smaller pit for water to gather in it and be pumped out of the bottom of the main pit by a submersed pump. Lay a Ø 50 mm
(Ø 1,9 in) corrugated tube, suitable for the electric cables required to operate the bollard to be pulled through it.
PLAN VIEW
Anti-terrorism retractable oil-hydraulic bollard
INTERNAL SIDE TO PROTECT
EXTERNAL SIDE
possible
submersed
pump
finished
road
level
Ø 50 mm
(Ø1,9 in) tube for
the electric cables
to go through
Ø 50 mm (Ø1,9 in)
tube for the electric
cables to go
through
SECTIONAL VIEW
!
Check soil natural permeability: 50 liters (13,2 gal) of water must be
able to soak away in no longer than 30/40 minutes. Otherwise
provide a pipe to allow rain water to flow either into the sewage
system or a sump well equipped with a submersed pump.
4
1,85 m
[A]
(72,8 in)
