Importance

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Abstract

A three piece concrete culvert system includes a set of horizontally spaced precast side wall sections having inwardly projecting and opposing steps or surfaces which support opposite ends of a precast arched top wall section. The side wall sections include extension portions which project substantially above the ends of the top wall section for increasing the capacity of the side wall sections to resist thrust from the top wall section. Vertically spaced and generally horizontal layers of soil reinforcement members or grids may be positioned within the soil backfilled adjacent the outer surfaces of the side wall sections, and precast concrete anchor members may be attached to the side wall sections above supporting footers for the side wall sections. Shims are used between the footers and the anchor members for temporarily positioning and aligning the side wall sections before receiving the top wall section.

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First Claim