12
©2017, Barry Cordage Ltd.
BARRY B-NET SYSTEM • INSTALLATION GUIDELINES rev. 5
Fig. 5
: Double “ S “ layering
Plan view (not to scale)
O
PTION
4
:
DOUBLE
’’
S
’’
LAYERING
90˚
≥6m
1m
1m
1m
1m
1m
1m
S
PEED UP TO
100
KM
/
HR
-
90˚
This set-up was observed to decelerate a falling 80 kg skier travelling at 100 km/hr within a
1 m distance from the obstacle with a 90
o
angle of impact. More rows or additional
compensatory measures may be required as determined by the qualified authority.
Step 1: This arrangement requires using two (2) 20 meters nets and 22 support poles (4
extra poles). To install the additional support poles, refer to the “4.4-Replacing support
poles" section.
Step 2: Ensure that there is at least 6 m between the turning gate and the first row of nets.
Distance between the last row of net and the obstacle must be at least 1 m (more distance
is better). In the case where the 1 m spacing between rows is not possible, the interval
between each row of nets can be 0.5 m to 1 m, additional measures may be required to
protect the potential obstacle. This requirement shall be determined by the qualified
authority on site.
Step 3: Place the net to obtain a double “ S “, as shown on figure 5.
Step 4: Drill the poles in the snow following the instruction in section “4.2- Drilling”.
Note
: This scenario has not been validated for speed events or training where portions of
the course may require the use of additional rows of netting, A-Nets, air fences, etc.
Refer to the on-site qualified authority to determine the proper safety measures to be
taken for such activities.
Potential obstacle
Turning gate and
direction of impact
of the skier
Fall distance from
turning gate:
minimum 12m
+/- 7m
Turning gate
