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Bont Evans Tree Works Scheme

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Looking North showing the GBE-100A-R curving with the road

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Fence post bases prior to post installation

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Concreted and drilled fence post bases for the GBE-100A-R

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Fence line angled to mirror the slope angle

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Geobrugg Type III spiral rope anchor installed and securing the GBE-100A-R system ropes

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Most Southern edge of the site works, showing tree height in the distance

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Fence post installed. Mesh shown still attached to fence posts as standard procedure from Geobrugg

Rockfall Protection - Bont Evans Tree Works Scheme 2018

GBE-100A-R 2 m high positioned above farmland. Protecting the farm from possible rockfall during tree harvesting

Rockfall Protection - Bont Evans Tree Works Scheme 2018

Most Northerly end of site. GBE-100A-R positioned behind farm land

Rockfall Protection - Bont Evans Tree Works Scheme 2018

GBE-100A-R 2 m high positioned above road to protect traffic from posible rockfall

 

Systems

 

System length

930 m

 

Year of installation

2018

Initial situation

Natural resource Wales need to clear the hillside of trees that have grown too tall and create a safety concern for road users, hill walkers, and tourists. During early stage investigation, many rock outcrops were found on site and concerns were raised of potential rockfall created during the tree harvesting process. The harvesting is undertaken by, and this involves the lifting and dragging of the cut tree to the stockpile. Potentially dislodging rock and debris in the process.

Description

Working alongside Caulmert we were able to supply experience and materials to this complex build and provide a temporary rockfall fence along the full road boundary of the site.

Colin Jones Rock Engineering stalled the GBE-100A-R of two m in height. The ground anchors are IBO R32 bar to depths of 2.5 m. Where rock head was not at surface the fence post bases are constructed of 1000 x 500 x 400 triple reinforced concrete bases. A combination of Geobrugg Type III wire rope anchors or Geobrugg Flexheads for IBO R32 bar drilled to depths of 4.5 m.

Customer

Natural Resources Wales

Contractor

Colin Jones Rock Engineering Ltd

Protected object

Road, Touristic infrastructure

Corrosion protection

Galvanized, GEOBRUGG SUPERCOATING

Engineering

CAULMERT

Your local contact

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland Country Manager Ost- und Zentralschweiz, Liechtenstein

E-Mail

René Müller
   

René Müller

Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG,Industriestrasse 21,5200 Brugg / Switzerland Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-Mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Natural Hazards
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Switzerland Project Manager Inspection Services

E-Mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Natural Hazards
Hydraulic Engineering
Mining / Tunnels
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Switzerland Ticino Country Manager

E-Mail