A concrete pile fitted with a special slightly tapered concrete tip of larger area. The tip has a central open socket for receiving concrete poured in after the pile is in place.
This application is a continuation of application Ser. No. 745,405, filed Nov. 26, 1976, now U.S. Pat. No. 4,132,082, which is a division of application Ser. No. 601,728, filed May 4, 1975 and now abandoned. Said application Ser. No. 601,728 is a division of application Ser. No. 303,706, filed Nov. 6, 1972, now U.S. Pat. No. 3,913,337, which is a continuation-in-part of both applications Ser. No. 256,163, filed May 23, 1972, now U.S. Pat. No. 3,875,752, and application Ser. No. 235,790, filed Mar. 17, 1972, now U.S. Pat. No. 3,751,931. Said application Ser. No. 235,790 is a continuation-in-part of application Ser. No. 97,997, filed Dec. 4, 1970, now abandoned. The entire disclosure of said U.S. Pat. No. 3,913,337 is incorporated herein by reference.
A foundation for supporting poles, particularly electrical power cable support poles, is formed by boring a hole only slightly larger than the pole base onto the earth a desired depth. A reinforcing structure is lowered into the hole. The reinforcing structure usually rests on the bottom of the hole and extends above the earth surface a number of feet. The hole is then filled with concrete, usually up to the earth surface, and allowed to cure. A lowermost or base section of the pole is then lowered into position about an exposed upper portion of the reinforcing structure. Concrete is placed into the interior of the pole section about the reinforcing structure until it is covered. After the concrete cures, any remaining pole sections may be installed onto the base section.
A seawall element and installation apparatus therefor, the seawall element including an elongated plastic tubular member having a uniform hollow elliptic or oval-shaped cross section and open at each end thereof. The tubular member has a cylindrically-shaped male portion and cavity interlocking arrangement for interlocking two side by side tubular members together by slidable overlapping substantially watertight engagement lengthwise of one tubular member to another. A seawall structure includes a plurality of these seawall tubular members positioned side by side in self-locking engagement to form a row and supported by being supportively embedded into the earth. An elongated cast concrete reinforcing cap extends along and interconnects an upper end portion of each of the seawall tubular members and extends monolithically into each of the tubular member upon deployment. An apparatus for water jetting each tubular member into bottom ground is also disclosed.
