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Patterned Walls

Document imprimable.pdf

The base course should always use a full course of full-sized blocks. This will speed the leveling and installation of the first course. Click here for a detailed description on how to install the base course. Basic steps include: site prep and excavation, installing base material, base course, wall rock, backfill materials and compacting. Mur avec appareillage irrégulier

Install Reinforcement

  • Check your approved plans for exact size and course location for the AB Reinforcement Grid.
  • Install the first layer of geogrid by placing the edge of the geogrid against the back of the raised front lip and rolling it out along the wall.

Install the Multiple-Course Pattern

  • The example shown here uses a 2 course pattern. Click here for more information on pattern options.
  • Stack the first course of the pattern on top of the geogrid and the base course..
  • Check blocks for level, and make adjustments as needed. Pull on the back of the geogrid to remove any slack. If necessary, stake in place.
  • Install the wall rock in the block cores and 12 in. (300 mm) behind the blocks to the height of the blocks.
  • Compact inside the block cores using a shovel handle. Check blocks for level. Click here for more information on compaction in the block cores.
  • Use infill or approved on-site soils to backfill behind the wall rock in 8 in. (200 mm) lifts or less. The top of the blocks will not always match up with each lift of soil. Check blocks for level.
  • Using a plate compactor, compact the wall rock and infill materials behind the block in 8 in. (200 mm) lifts or less. Compact directly behind the blocks in a path parallel to the wall, working from the back of the wall to the back of the excavated area. Always make a minimum of two passes with a plate compactor.
  • Install the remainder of the 2 course pattern. Install wall rock in the block cores and behind the blocks as before so they are level with the top course of the blocks. Use infill or approved on-soils to backfill behind wall rock. Check blocks for level. If using a custom pattern, remember to offset the vertical seams by at least 1/4 of the block whenever possible.
  • With the first multiple-course pattern completed, use a plate compactor to compact the wall rock in the block cores and directly behind the blocks. The first pass of the plate compactor should be directly over the top of the block cores.

    décaler les blocs d'au moins 1/4 sur la longueur.
  • Compact in a path parallel to the wall, working from the front of the block to the back of the excavated area. Make a minimum of two passes with a plate compactor. Check blocks for level.
    NOTE: Keep all heavy equipment at least 3 ft. (0.9 m) away from the back of the wall.

Install the Second Multiple-Course Pattern

  • Refer to your approved plans to determine if reinforcement will be required. If so, repeat the previous process to install geogrid between the patterns.
  • Install the next pattern section as done in the previous steps. Each additional pattern will need to be offset from the pattern below to avoid a repetitive look. Remember to offset the vertical seams by at least 1/4 of the block whenever possible.
  • Two course patterns should be selected for most projects. Three course patterns can be used for gravity walls or to top off a reinforced wall where geogrid is not required within the top three courses.

Ending and Topping off the Wall

  • Finishing a patterned wall is the same as finishing a standard wall. Click here for finishing wall options. The only requirement is that a multiple course pattern must be completed so that the top course of the blocks forms a level surface.
  • On the last course, fill behind the blocks with organic soils in place of infill or approved on-site soils. This will assist in any plantings above the wall and also to direct water from running behind the blocks.
Mise en place de la géogrille.
Mise en place de la géogrille.
Posez la première rangée des blocs différents
Posez la première rangée des blocs différents.
Pose du gravier
Pose du gravier.
Compactez derrière les blocs.
Compactez derrière les blocs.
Finir la section à composition variée, nivelez et alignez.
Finir la section à composition variée, nivelez et alignez
Compactez sur et derrière les blocs.
Compactez sur et derrière les blocs. Géogrille
Posez la couche suivante de géogrille.
Murs avec appareillage irrégulier
Posez la rangée suivante de blocs du schéma de composition variée.
Association de modèles de composition variée
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