See Also: prestressed concrete(encyclopedia)
Concrete(medicine)
concrete(encyclopedia)
concrete(2)(dictionary)
concrete(1)(dictionary)
Concrete thinking(health)
concrete mixer(dictionary)
concrete jungle(dictionary)
concrete 3, verb(dictionary)
concrete 2, noun(dictionary)

maneh (iou) and prestressed concrete (sh)


maneh (iou)



maneh noun. E17.
[Hebrew maneh prob. from Akkadian (cf. MAUND noun2), whence also MINA noun1.]
Antiquities. A Hebrew coin and weight of between 50 and 60 shekels.

prestressed concrete (sh)




Concrete reinforced by either pretensioning or posttensioning, allowing it to carry a greater load or span a greater distance than ordinary reinforced concrete.

In pretensioning, lengths of steel wire or cables are laid in the empty mold and stretched. The concrete is placed and allowed to set, and the cables are released, placing the concrete into compression as the steel shrinks back to its original length. In posttensioning, the steel in the concrete is stretched after the curing process. Prestressing places a concrete member in compression; these compressive stresses counteract the tensile bending stresses of an applied load. The process was developed by the French engineer Eugene Fressinet in the early 20th century.