Corrugated pipe with improved profile stability
Corrugated pipe with improved profile stability
A corrugated pipe is provided having a pipe structure of an inner wall having an interior surface and an exterior surface, and an outer wall having corrugations, each of the corrugations having an interior surface and an exterior surface, each corrugation having a crown. The pipe structure has a trough between each corrugation, and each trough has a center-point, with the distance between the center-points of adjacent troughs defining the pitch of the pipe. The corrugated pipes has at each crown a first distance extending in a straight line from the crown exterior surface to the interior surface of the inner wall, with the distance defining the pitch being a second distance, with the ratio of the first distance to the second distance being less than 0.8:1.0.
Transportation of surface water by gravity for agricultural, residential, civil construction, or recreational purposes. In these particular markets, concrete, steel or clay pipe was traditionally utilized. In practice, the stackable plastic containers were installed through the placing together of relatively short sections of the pipe to construct the desired drainage system. Such sections or pieces could range from a few feet to more than a couple of dozen feet.
Consequently, construction was extremely time consuming and relatively expensive because of the number of pieces and total weight associated with the components of the drainage system. Additionally, the relatively large number of plastic pallets which were required to be installed for such systems necessitated proper positioning of an extremely large numbers of pipe in order to insure minimal leakage.
In accordance with this invention a double-walled corrugated pipe is provided having a pipe structure having an inner wall having an interior surface and an exterior surface, and an outer wall having corrugations. Each of the plastic pallet has an interior surface and an exterior surface, and each corrugation has a crown. The pipe structure has a trough between each corrugation, each trough having a center-point, with the distance between the center-points of adjacent troughs defining the pitch of the pipe.
In the preferred embodiment of the corrugated pipes, the ratio of the first distance to the second distance is about 0.75:1.0. Furthermore, the pipe could be plastic or metal, but if plastic, the pipe upon the application of pressure can deflect to greater than 30% of its original diameter without exhibiting imperfections of structural failure, with this number exceeding 35% in the preferred embodiment of the corrugated pipe.
A corrugated pipe is provided having a pipe structure of an inner wall having an interior surface and an exterior surface, and an outer wall having corrugations, each of the corrugations having an interior surface and an exterior surface, each corrugation having a crown. The pipe structure has a trough between each corrugation, and each trough has a center-point, with the distance between the center-points of adjacent troughs defining the pitch of the pipe. The corrugated pipes has at each crown a first distance extending in a straight line from the crown exterior surface to the interior surface of the inner wall, with the distance defining the pitch being a second distance, with the ratio of the first distance to the second distance being less than 0.8:1.0.
Transportation of surface water by gravity for agricultural, residential, civil construction, or recreational purposes. In these particular markets, concrete, steel or clay pipe was traditionally utilized. In practice, the stackable plastic containers were installed through the placing together of relatively short sections of the pipe to construct the desired drainage system. Such sections or pieces could range from a few feet to more than a couple of dozen feet.
Consequently, construction was extremely time consuming and relatively expensive because of the number of pieces and total weight associated with the components of the drainage system. Additionally, the relatively large number of plastic pallets which were required to be installed for such systems necessitated proper positioning of an extremely large numbers of pipe in order to insure minimal leakage.
In accordance with this invention a double-walled corrugated pipe is provided having a pipe structure having an inner wall having an interior surface and an exterior surface, and an outer wall having corrugations. Each of the plastic pallet has an interior surface and an exterior surface, and each corrugation has a crown. The pipe structure has a trough between each corrugation, each trough having a center-point, with the distance between the center-points of adjacent troughs defining the pitch of the pipe.
In the preferred embodiment of the corrugated pipes, the ratio of the first distance to the second distance is about 0.75:1.0. Furthermore, the pipe could be plastic or metal, but if plastic, the pipe upon the application of pressure can deflect to greater than 30% of its original diameter without exhibiting imperfections of structural failure, with this number exceeding 35% in the preferred embodiment of the corrugated pipe.