A pipe is a tubular section or hollow cylinder, usually but not necessarily circular cross-section, used mainly to convey substances which can flow liquids and gases (fluids), slurries, powders and...
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Classification of bridges and types of span structures. Span structures are distinguished constructively, according to the design scheme of the facility and the material of manufacture. For each specific case,...
Alternative energy sources have a number of advantages. Solar panels are safe, effective, and very convenient. These panels generate electricity all year round. There are both compact and large in…
Great music for the construction work. Under the musical composition is excellent drilling wells, a circular saw to cut or demolish the building.