Allan Block Europa Instructions and Coursing Charts
Instructions for Typical Europa Reinforced Wall
Compacted Base Material:
Compacted Granular A (well-graded aggregate, ranging in size from .25 inch to 1.5 inch and containing
less than 10% fines) to a depth of 6 inches (15 cm) or more.
Sand Setting Bed:
Screed sand to a depth of 1 inch. Level block front-to-back and side-to-side.
Infill and Drainage Zone:
Fill blocks and 12 inches (30 cm) behind the wall with free-draining, 1/2 inch, clean stone. Protect
the drainage zone from migration of fines by placing filter cloth between drainage zone and backfill material.
Allan Block Europa Coursing Charts
Two-Course Pattern
Finished Wall Height:
22" (55 cm)
(4" (10 cm) below finished grade)
Block Required for Each 8.5' Section:
Dover-6, Palermo-2, Barcelona-6, Bordeaux-8
Base Course:
Dover-6
Three-Course Pattern
Finished Wall Height:
30" (75 cm)
(4" (10 cm) below finished grade)
Block Required for Each 8.5' Section:
Dover-8, Palermo-10, Barcelona-8, Bordeaux-4
Base Course:
Dover-6
Four-Course Pattern
Finished Wall Height:
36" (90 cm)
(6" (15 cm) below finished grade)
Block Required for Each 8.5' Section:
Dover-12, Palermo-12, Barcelona-8, Bordeaux-8
Base Course:
Dover-6
NOTE: For finished wall heights of 40" (100 cm) and 46" (115 cm), contact Nitterhouse for additional
Coursing Charts.