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Prestressed concrete cylinder pipe (PCCP) is a common variety of large-diameter concrete pressure pipe used for transporting water and wastewater. PCCP is typical manufactured according to the American Water Works Association (AWWA) standard C304. [ 1 ]
Prestressed concrete is a highly versatile construction material as a result of it being an almost ideal combination of its two main constituents: high-strength steel, pre-stretched to allow its full strength to be easily realised; and modern concrete, pre-compressed to minimise cracking under tensile forces.
Snap-on, Bahco, Blue-Point, Williams, CDI Torque Products, [25] Sun diagnostic tools in Europe and Brazil: Hand tools, air tools, power tools, diagnostic tools, assorted automotive tools Sortimo: Zusmarshausen, Germany: Sortimo: in-vehicle equipment, storage system for parts and tools Stanley Black & Decker: Connecticut, US
Walchand Institute of Technology; Walchand Hirachand was assisted by his brothers, when they grew up. As Walchand died without any direct male descendants, the group was divided amongst sons of his brothers Gulabchand Hirachand, Lalchand Hirachand & Ratanchand Hirachand, who operated together till they were alive.
The technical and aesthetic possibilities of prestressed concrete were most fully realized with his bridges in Switzerland. [2] Menn led his own engineering company in Chur from 1957 to 1971. From 1971 until his retirement in 1992, he was a professor of structural engineering at ETH Zurich, specializing in bridge design.
The Ridge Tool Company is an American manufacturing company that makes and distributes tools under the Ridgid brand name. The company was founded in 1923 in North Ridgeville, Ohio . [ 1 ] In 1943, it relocated to its current location in Elyria, Ohio , and in 1966, it became a wholly owned subsidiary of Emerson Electric .
The usual technique for concrete buildings, bridges and similar structures is to use ICCP, [30] but there are systems available that use the principle of galvanic cathodic protection as well, [31] [32] [33] although in the UK at least, the use of galvanic anodes for atmospherically exposed reinforced concrete structures is considered experimental.
A device that tensions prestressed concrete tendons. [1]: 36 [3]: 35–36 stressing stool A device interposed between the stressing jack and the concrete member during tensioning operations, to allow manipulation of the anchor block and seating wedges. Often used during lift-off testing. swage