Method and apparatus for anchoring backfilled wall structures

Claim 1

Structure for a modular assembly for retaining soil, comprising in combination at least a pair of laterally spaced tie-back elements, each tie-back element comprising, a first wall, a second wall, a first end portion connecting said first and second walls; a second end portion connecting said first and second walls, said first and second walls and said first and second end portions forming a first cored cavity therebetween, each said first and second end portions comprising a first column end, and a first neck connecting said first column end to said first and second walls, a soil-retaining panel spanning such lateral space between each said pair of tie-back elements, each said retaining panel comprising: a third wall, a fourth wall, a third end portion connecting said third and fourth walls, a fourth end portion connecting said third and fourth walls, said third and fourth walls and said third and fourth end portions forming a second cored cavity therebetween, each said third and fourth end portions comprising: a second column end, and a second neck connecting said second column end to said third and fourth walls, and wherein said first neck of said tie-back comprises opposing concave outer surfaces, and wherein each said second column of said soil-retaining panel comprises a convex outer surface for mating with said concave neck surfaces of said laterally spaced tie-back elements.