Pre-Stressed Box Culvert and Methods for Assembly Thereof
First Claim
1. An apparatus, comprising:
- at least one three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the pre-stressed top slab has a first end and a second end arranged parallel to and opposite to each other and a first side and a second side arranged parallel to and opposite to each other such that the pre-stressed top slab is formed as a parallelogram having two obtuse angles and two acute angles, wherein the first sidewall extends orthogonally from the first end of the pre-stressed top slab and the second sidewall extends orthogonally from the second end of the pre-stressed top slab, wherein the pre-stressed top slab has a plurality of steel tendons extending between the first end and the second end of the pre-stressed top slab thereby imparting a compressive force to the pre-stressed top slab.
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Accused Products
Abstract
A pre-stressed concrete box culvert includes a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall. The first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and the first and the second sidewalls each include a free end that has at least one male or female connector. The pre-stressed concrete box culvert includes a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall. The third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and the third and the fourth sidewalls each include a free end that has at least one male or female connector to mate with the at least one corresponding male or female connector arranged at one of the respective free ends of the first and the second sidewalls.
2 Citations
20 Claims
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1. An apparatus, comprising:
at least one three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the pre-stressed top slab has a first end and a second end arranged parallel to and opposite to each other and a first side and a second side arranged parallel to and opposite to each other such that the pre-stressed top slab is formed as a parallelogram having two obtuse angles and two acute angles, wherein the first sidewall extends orthogonally from the first end of the pre-stressed top slab and the second sidewall extends orthogonally from the second end of the pre-stressed top slab, wherein the pre-stressed top slab has a plurality of steel tendons extending between the first end and the second end of the pre-stressed top slab thereby imparting a compressive force to the pre-stressed top slab. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for assembling a pre-stressed culvert comprising:
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casting a three-sided culvert top section having a top slab, a first sidewall and a second sidewall, wherein the top slab has a first end and a second end arranged parallel to and opposite to each other and a first side and a second side arranged parallel to and opposite to each other such that the top slab is formed as a parallelogram having two obtuse angles and two acute angles, wherein the first sidewall extends orthogonally from the first end of the top slab and the second sidewall extends orthogonally from the second end of the top slab; and applying a compressive force to the top slab. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus, comprising:
a first plurality of three-sided culvert top sections each having a pre-stressed top slab, a first sidewall and a second sidewall, wherein each of the pre-stressed top slabs has a first end and a second end arranged parallel to and opposite to each other and a first side and a second side arranged parallel to and opposite to each other such that each of the pre-stressed top slabs is formed as a parallelogram having two obtuse angles and two acute angles, wherein the first sidewall extends orthogonally from the first end of each the pre-stressed top slabs and the second sidewall extends orthogonally from the second end of each of the pre-stressed top slabs, wherein each of the pre-stressed top slabs has a plurality of steel tendons extending between the first end and the second end thereby imparting a compressive force to each of the pre-stressed top slabs, wherein each of the pre-stressed top slabs has a plurality of post-tensioning ducts extending from the first side to the second side, and wherein the plurality of three-sided culvert top sections are arranged adjacent to each other such that the plurality of post-tensioning ducts in each of the pre-stressed top slabs are aligned with each other forming a plurality of continuous channels through the pre-stressed top slabs. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification