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it is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and hold the concrete in compression.
Concrete is strong under compression, but has weak tensile strength.
It was, however, concluded that both failures were the consequences of poor quality labor.
Concrete is a material that is very strong in compression, but relatively weak in tension.
This first approach increases the friction locking the bar into place, while the second makes use of the high compressive strength of concrete.
Common rebar is made of unfinished tempered steel, making it susceptible to rusting.
One of these, the Alvord Lake Bridge in San Francisco's Golden Gate Park, was the first reinforced concrete bridge built in the United States. Furthermore, Turner warned that Kahn's system could result in a brittle failure as it did not have longitudinal reinforcement in the beams at the columns.
This type of failure unfortunately manifested itself in the partial collapse of the Bixby Hotel in Long Beach, California and total collapse of the Eastman Kodak Building in Rochester, New York, both during construction in 1906.
Too much concrete cover can cause bigger crack widths which also compromises the local guard.