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US 4,564,313 AGranted
Rectilinear culvert structure
AssigneeHyway Concrete Pipe Company
InventorsRobert L. Niswander, Tomy W. Cornwell
Life of this patent
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AssigneeHyway Concrete Pipe Company
InventorsRobert L. Niswander, Tomy W. Cornwell
Estimating the term…
A three-sided, rectilinear bridge or culvert structure comprises a pair of vertical sidewalls set in preformed or cast in place footers or existing supports and an integral, planar, horizontal span. The footers preferably include a sidewall receiving channel on their upper surfaces. There is no lower or bottom portion of the structure such as is found in conventional box culverts and thus, that region between the footers and sidewalls is open and readily permits water flow through the structure in its natural watercourse, lessening the likelihood of debris collection within the structure. The structure is cast concrete reinforced with conventional reinforcing bar or welded wire mesh. A wide range of rise/span (height/width) proportions may be accommodated in structures having spans up to about thirty feet.
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure and a pair of footers, said culvert structure having only one substantially planar span and a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one each of said footers disposed in supporting relationship with a respective one of said sidewalls.
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, each of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls.
A bottomless concrete culvert assembly comprising, in combination, at least one unitary, rectilinear culvert structure having only one substantially planar span portion, and a pair of parallel, sidewalls integrally formed with and extending perpendicularly and unidirectionally from said span portion and a pair of haunches disposed at inside intersections of said sidewalls and said span portion, and a pair of footers, one each of said footers disposed in supporting relationship with a respective one of said sidewalls, each of said footers including a channel on its upper surface for receiving and restraining said sidewalls against movement along a first axis and permitting movement of said sidewalls along a second axis normal to said first axis wherein the media spanned by said assembly may remain substantially in its course.
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures and a pair of footers, said culvert structures having only one substantially planar span, a pair of parallel sidewalls integrally and rigidly formed with and extending substantially perpendicularly from said planar span, one of said footers disposed in supporting relationship with a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
A bottomless modular concrete culvert assembly comprising, in combination, at least two unitary rectilinear culvert structures having only one substantially planar span and a pair of sidewalls, said sidewalls being integrally formed with and extending unidirectionally and substantially perpendicularly from said span, a pair of haunches, one of said haunches disposed at each of a respective one of a pair of inside intersections of said sidewalls and said span, and a pair of footers, one of said footers disposed in supporting relationship with a respective one of said sidewalls and including means on an upper surface for receiving a respective one of said sidewalls and said culvert structures disposed in aligned end-to-end juxtaposition.
Dependencies are inferred from the claim text.