ELSA®
barriers
Light barrier with articulated support.
anchoring by post.
French standard NFP 95-308
Classes 1 to 3, 12,5 to 200 kj
Developed in close collaboration with the MECANROC design
office and subjected to full scale testing, the range CAN®
rockfall barriers are the outcome of more than 20 years
experience in designing and building rockslide protection
systems.
The innovation :
• the barrier support comprises a tripod or bipod base
that is fitted with a post that is secured to itself.
• the base is secured to the ground by a single central
anchoring stressed in traction and an elastomer abutment concentric
to the anchor bolt (class 3).
• the elastomer abutment enables the elastic articulation
of the support around the base supports.
Technical advantages :
• the jointed supports, stressed in reverse, enable
a dissipation of energy by reversible deformation of the barrier.
• the tangential forces on the ground are taken up by
the spades of the base and the anchoring is only stressed
in traction, which is particularly advantageous on loose terrain.
• the free-standing support with its guy lines can be
pre-assembled before being transported by helicopter and installed
instantaneously on its anchoring.
• the anchoring can be tested systematically and very
rapidly at their working traction by placing a hollow cylinder
on the base which is then used as a traction beam.
Reduction of costs :
• reduction of the number of anchorings is an important
savings factor.
• pre-assembly of supports considerably reduces assembly
time.
• the speed of installation reduces the stresses of
the worksite (in particular, circulation failures).
Least visual impact :
• the ELSA® barrier posts, produced in class 4 treated
round timber.
• the reduction of the number of anchorings and the
ground coverage limits the need to clear trees.
The operating principle of the ELSA® rockfall barriers
is advantageous in the field of avalanche prevention structures,
products that are also developed by CAN and MECANROC.
ELSA®, patent no. 93 13429, registered
trademark.
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