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US 7,001,110 B2Granted
Precast concrete retaining wall
AssigneeCon/Span Bridge Systems Ltd.
InventorWilliam D. Lockwood
Life of this patent
Estimating the term…
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AssigneeCon/Span Bridge Systems Ltd.
InventorWilliam D. Lockwood
Estimating the term…
A precast concrete retaining wall forms a wing wall for a precast concrete culvert unit and is supported by a concrete footer with one or more precast anchor member projecting laterally from the wing wall into the back-filled soil behind the wing wall. Secondary reinforcing members in the form of elongated metal fibers or light weight welded wire mesh extend throughout the wing wall, and substantially heavier primary reinforcing bars extend vertically within the wing wall where head portions of reinforcing rods within the anchor member connect with the wing wall. In another embodiment, the reinforcing rods within the anchor member extend through ducts or tubes and have end portions threaded into the tubular anchors precast within the wing wall adjacent the reinforcing rods to provide for attaching the anchor member at the construction site after separately precasting the anchor member and wing wall.
A precast concrete retaining wall system adapted for use as a wing wall for a concrete culvert to retain a backfill of soil, comprising a precast concrete vertical retaining wall adapted to be supported by a concrete footer, at least one precast concrete anchor member including an outer flange wall and an integrally connected web wall connecting said flange wall to said retaining wall, elongated reinforcing members extending within said web wall of said anchor member and including connecting portions projecting into and embedded within said concrete retaining wall, a set of generally vertical primary reinforcing bars extending only within a portion of said retaining wall adjacent opposite sides of said reinforcing members within said web wall of said anchor member and projecting above said anchor member between said web wall and said connecting portions of said reinforcing members, secondary reinforcing members extending generally throughout said retaining wall, and said secondary reinforcing members being substantially lighter and smaller than said primary reinforcing bars, for substantially reducing the total weight of said secondary reinforcing members within said retaining wall and thereby substantially reduce the total weight of said retaining wall system.
A precast concrete retaining wall system adapted for use as a wing wall for a concrete culvert to retain a backfill of soil, comprising a precast concrete vertical retaining wall adapted to be supported by a concrete footer, a plurality of horizontally spaced precast concrete anchor members each including an outer flange wall and an integrally connected web wall connecting said flange wall to said retaining wall, elongated reinforcing members extending within said web wall of each said anchor member and including connecting portions projecting into and embedded within said concrete retaining wall, a set of generally vertical primary reinforcing bars extending only within a portion of said retaining wall adjacent opposite sides of said reinforcing members within said web wall of each said anchor member and projecting above the corresponding said anchor member between said web wall and said connecting portions of the corresponding said reinforcing members, secondary reinforcing members extending generally throughout said retaining wall, and said secondary reinforcing members being substantially lighter and smaller than said primary reinforcing bars, for substantially reducing the total weight of said secondary reinforcing members within said retaining wall and thereby substantially reduce the total weight of said retaining wall system.
Dependencies are inferred from the claim text.