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CALTAN GABION MESH CORROSION FIELD STUDY http://www.dot.ca.gov/hq/oppd/hydrology/gabionmesh.pdfV

A GENERAL NOTE ON GALVANIZING:

GALVANIZING PROTECTS THE STEEL GABION WIRE FROM OXIDATION BY FORMING A PROTECTIVE COATING THAT PROLONGS THE LIFE EXPECTANCY OF GABIONS. IT ALSO ACTS AS A SACRIFICIAL ANODE THAT PROTECTS AGAINST RUST EVEN IF THE COATING IS SCRATCHED EXPOSING THE BARE STEEL

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100+ YEARS -  DESERT, LOW HUMIDITY, DRY RURAL AREAS AND INSIDE BUILDINGS


50+ YEARS - URBAN AREAS WITH LOW HUMIDITY, MODERATE POLLUTION AND FRESH WATER COASTAL AREAS


30+ YEARS - INDUSTRIAL AND COASTAL AREAS WITH 1 MILE DISTANCE FROM OCEAN 


15+ YEARS - AREAS OF HIGH HUMIDITY, INDUSTRIAL AND COASTAL AREAS WITHIN 500 YDS OF OCEAN


5 YEARS - AREAS OF EXTREME HUMIDITY, HIGH POLLUTION INDUSTRIAL AND COASTAL WITH CONTACT WITH OCEAN SALT WATER


NOTES:

  • GOOD DRAINAGE BEHIND AND BELOW A GABION WALL WILL HELP TO IMPROVE THE STABILITY OF A RETAINING WALL AND  PROLONG ITS LIFE 
  • GALVANIZED AND PVC COATED GABIONS WILL NORMALLY DOUBLE A GABION'S LIFE EXPECTANCY
  •  GABION LIFE EXPECTANCY WILL BE INCREASED IN AREAS OF ACID OR ALKALINE SOIL CONDITIONS BY USE OF GEOTEXTILE FABRIC PLACED BETWEEN THE BACK FILL SOIL AND THE RETAINING WALL GABIONS

    ROCK FALL PROTECTION

    GABION STUDIES AND REPORTS

LINK - ARMY CORPS of ENGINEERS

http://library.water-resources.us/docs/MMDL/FLD/Feature.cfm?ID=33


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PVC COATED WIRES PERFORM BETTER THAN BASIC GALVANIZING AND WILL USUALLY DOUBLE THE LIFE EXPECTANCY OF A GABION INSTALLATION



LIFE EXPECTANCY OF CLASS III GALVANIZED GABIONS