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Basic Installation

Document imprimable.pdf

Base Preparation

  • To start your layout, place stakes to represent the location of the front of the wall. Using a string line or paint, mark out the entire length. A garden hose is an excellent tool to use when laying out curved walls.
  • Excavate the area by removing all surface vegetation and organic materials from the area. These cannot be used as backfill material.
  • If reinforcement is needed excavate behind the wall to accommodate the design length of the geogrid. Refer to your approved plans for exact length.
  • Starting at the lowest point, dig a base trench the length of the wall.
    For walls where the base trench steps up a slope Click here.
  • Dig a base trench 24 in. (600 mm) wide the length of the wall
  • The depth of the trench will be 6 in. (150 mm) plus an additional 1 in. (25 mm) for each 1 ft. (300 mm) of wall height for the amount or buried block that is needed.
  • Compact the base trench making a minimum of two passes with a walk behind plate compactor. Foundation soils at the bottom of the base trench must be firm and solid. If the soils are made up of heavy clay or wet soils, or the areas have been previously excavated, remove this material and replace with a granular material, compacting in 8 in. (200 mm) lifts or less.


La profondeur de la fondation
Délimitation du mur de soutènement
Délimitation du mur de soutènement.

Creusement
Creusement.

Compactage
Compactage.

Tuyau de drainage
Placez le tuyau de drainage, remblayez avec des graviers puis nivelez.

Base Material

  • A drain pipe is required for any reinforced wall or any wall over 4 ft. (1.2 m) tall. Place the drain pipe at the lowest possible point toward the back of the trench and vent to daylight every 50 ft. (15 m). See page 14 for more information
  • Place a minimum of 6 in. (150 mm) of wall rock in the base trench and rake smooth.
  • Compact the wall rock making a minimum of two passes with a plate compactor.
  • Check the entire length for level, and adjust as needed.


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