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Manufacturer

Installation guide, Walls and design charts

Techo-Bloc (hosted by dealer Stonewood Products)

Read by the research. Cited here for paver settlement into the bedding (p. 216).

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Consulted
October 10, 2026
Language
en

Cited by

What we take from it

  • Pavers settle about 10 mm into the bedding when compacted.
  • Techo-Bloc publishes maximum heights without geogrid, embedment included, valid only for granular soil, no surcharge, no slope above and adequate drainage.
  • Techo-Bloc's chart gives, per block, the number of courses and the maximum height without geogrid for inclined and vertical layouts, embedment included; a vertical wall has a lower allowed height.
  • Techo-Bloc sets the trench width at 150 mm in front of the block, plus the block depth, plus 300 mm behind.
  • Techo-Bloc sets the trench width at 150 mm in front of the block, plus the block depth, plus 300 mm behind for drainage stone.
  • Techo-Bloc calls for a pad of compacted 0-20 mm stone at least 150 mm thick, dead level, and geotextile behind the drainage stone.
  • Techo-Bloc describes laying course by course, the 100 mm drain behind the first course, 20 mm clear stone in the cores and behind, backfill in lifts of 200 mm or less and no heavy equipment within 1 m of the blocks.
  • Techo-Bloc lays geogrid flat, strong direction perpendicular to the wall, no splices in that direction, taut and staked; at an inside corner it extends at least 25% of the height past the corner; crossing layers are separated by 75 mm of fill; curves are fully covered.
  • Techo-Bloc glues the caps and the top course with concrete adhesive, with no gaps between pieces.
  • Techo-Bloc's detail G closes the top of the drainage stone with low-permeability soil.
  • Techo-Bloc calls for embedment of at least 10% of the height, never less than 150 mm.
  • Techo-Bloc calls for a dead-level pad under the first course.
  • Techo-Bloc separates the drainage stone from the retained soil with geotextile.
  • Techo-Bloc backfills and compacts in lifts of 200 mm or less.
  • Techo-Bloc bans heavy equipment within 1 m of the blocks and driving directly on geogrid.
  • Techo-Bloc forbids splices in the geogrid's strong direction.
  • Techo-Bloc glues caps to the course below.
  • Techo-Bloc's chart heights include embedment and apply only with no surcharge or slope.
  • Techo-Bloc treats two walls as independent when they are at least twice the lower wall's height apart.
  • Techo-Bloc's unreinforced charts exclude any surcharge.
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