Control work
Variant №
15
Task 1. Translate the following text into Uzbek/Russian
USING REINFORCED CONCRETE ON ROOF
Reinforced concrete is a combination of two of the strongest structural materials, concrete and
steel. This term is applied to a construction in which steel bars or heavy steel mesh are properly
embedded in concrete. The steel is put in position and concrete is poured around and over it, then
tamped in place so that the steel is completely embedded. When the concrete hardens and sets,
the resulting material gains great strength. This new structural concrete came into practical
application at the turn of the 19th century. The first results of the tests of the reinforced concrete
beams were published in 1887. Since that time the development of reinforced concrete work has
made great progress. And the reasons of this progress are quite evident. Concrete has poor elastic
and tensional properties, but it is rigid, strong in compression, durable under and above ground
and in the presence or absence of air and water, it increases its strength with age, it is fireproof.
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