Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1990-01-30
1991-02-05
Corbin, David H.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
52608, 405273, 405284, E02D 2902
Patent
active
049900323
ABSTRACT:
Individual precast concrete wall units for erecting a retaining wall structure each includes a face member, a support member, and an anchor member. The support member has a front portion that is connected to the face member, either at the center of the face member or, more preferably, at a location spaced from one side edge by one-fourth the distance between one side edge and the other side edge of the face member. The anchor member is formed as two wings of unequal length that extend from a rear portion of the support member at angles of at least 90.degree., and preferably 135.degree., with respective sides of the support member. When the units are assembled in a horizontal row, spaces are left between the anchor wings of adjacent units that permit access by a power tamper to the region between the face members and the anchor members to tamp backfilled earth in this region to a required compression. The anchor wings may have lateral open-ended slots to accept metal grid or perforated polymer mats extending in horizontal layers from near the face members to behind the anchor members to reinforce backfilled material both forward and to the rear of the anchor members.
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Corbin David H.
Fomico International, Inc.
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