Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1989-09-26
1991-03-05
Murtagh, John E.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405273, E02D 2902
Patent
active
049973169
ABSTRACT:
A method and apparatus for constructing a retaining wall includes a first course having a pair of elongated beams positioned generally end-to-end on the ground, a deadman positioned between the adjacent ends of the beams and extending rearwardly therefrom, and a spacer block positioned on the ground rearwardly of an intermediate portion of one of the elongated beams. A second course is fastened on top of the first course and includes a third beam having each end fastened to the two elongated beams of the first course, and a deadman having its forward end fastened to one beam and the rearward end fastened to the spacer block so as to support the deadman during back filling of dirt against the retaining wall. Preferably, the spacer block, deadmen and beams all have the same cross-sectional width, and each component has a longitudinal length equal to a multiple of the cross-sectional width, so as to form a modular building component system. Each component has at least one countersunk anchor hole which will receive either a ground anchor or a screw-type fastener. The ground anchor is specially designed with wide, flat threads so as to engage the soil and prevent movement of the first course on the ground. Pilot holes are formed in the various components to receive the threaded portion of the wood screws to fasten the upper courses to lower courses.
REFERENCES:
patent: Re16689 (1927-07-01), Ford
patent: 1688305 (1928-10-01), Fitzgerald
patent: 1819026 (1931-08-01), Hobson
patent: 1907053 (1933-05-01), Flath
patent: 4463532 (1984-08-01), Faw
patent: 4815897 (1989-03-01), Risi
patent: 4834585 (1989-05-01), Hasenwinkle
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