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33°46′20″N 118°13′22″W / 33.772219°N 118.222686°W / 33.772219; -118.222686

United Concrete Pipe Corporation was a manufacturing and construction company based in Southern California. It was in the business of constructing and installing concrete water pipes for irrigation, water lines, sewers, and drains, and after 1930 expanded into general construction, building concrete bridges, tunnels, concrete roads, and building foundations. United Concrete Pipe was established in 1919 in Ventura, California, by (Thomas) Tom P. Polich. In 1924 Steve Kral and B. J. Ukropina became partners with Polich. Tom Polich was born on March 22, 1888, in Serbia and came to the US in 1905. Polich worked for a concrete company in Van Nuys, California, before starting his own company. His first contract was installing a irrigation system in Tuttle, California. In the 1930s under the Works Progress Administration the company grew to nine plants and became a general contractor, not just a pipe company. Plants were in California, Texas and New Mexico. In 1953 the three started a new parallel joint venture Ukropina-Polich-Kral of San Gabriel, a general contractor company. United Concrete Pipe Corporation headquarters was at 85th St. and Vermont Ave., Los Angeles, California. One Works Progress Administration project was the Wawona Tunnel built in 1933. In 1937 United Concrete Pipe completed a Works Progress Administration project the Mad River Water Supply Project in Eureka, California. United Concrete Pipe Corporation last plant closed in 1994, at Riverside, California.

In 1943, United Concrete Pipe established a shipyard division in Long Beach, California, to build small coaster ships for the US Army under the Emergency Shipbuilding Program. The shipyard of United Concrete Pipe was in Long Beach at Berth 83, at the north side of Channel 2, at the entrance to the channel. Unique to the boatyard was the assembly line railway the ships were built on. As the boat was built it would move down the rail track towards the water. The steel for the shipyard was shaped by United Concrete Pipe's Baldwin Park, California, plant. The Army ships were 176-foot, a beam of 30 feet, a draft of 8 feet, and were 935 tons loaded. Power was from two General Motors Cleveland diesel engines each with 500 hp. The first ship was complete on March 23, 1944.

Ships

See also

• California during World War II
• Maritime history of California

References

1. ^ The Log, Volume 39, July 1944
2. "Wawona Tunnel, Wawona Road through Turtleback Dome, Yosemite Village, Mariposa County, CA | Library of Congress". Loc.gov. Retrieved 2021-03-11.
3. Mad River Water Supply Project
4. Tom P. Polich, bio, Tuttle, California, Merced County, California
5. Merced County Bios
6. Want add United Concrete Pipe Corporation
7. B. J. Ukropina, Bio
8. California highways and public works
9. "The Log - Google Books". July 1944. Retrieved 2021-03-11.
10. "United Concrete Pipe". Shipbuildinghistory.com. 2015-05-20. Retrieved 2021-03-11.
11. CORREGIDOR (IMO 5080457) - General Cargo. "CORREGIDOR (IMO 5080457, General Cargo) - Ship Details and Current Position". Vessel Tracking. Retrieved 2021-03-11.{{cite web}}: CS1 maint: numeric names: authors list (link)
12. Tuna Boat by United Concrete Pipe Corporation
13. "New Tuna Clipper Performs Like Veteran". Pacific Marine Review. July 1946. p. 81.

• American boat builders