Вопрос № 1072313 - Английский язык

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Prestressed concrete is a relatively young product. It started to be widely used only during the last few decades, and is still gaining popularity. The reason of its popularity is its usefulness. The main good qualities of prestressed concrete are its high strength and durability. In prestressed concrete, concrete is combined with steel. This combination is highly advantageous. It serves the purpose of producing a compressed stress in the concrete as a building material. For this reason any member of beam is under constant compression and as a result has no cracks. In modern times this type of concrete serves as construction material for beams, for pipes, and columns, storage tanks, water towers and the like.
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The reason of popularity of prestressed concrete is …

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Prestressed concrete is a relatively young product. It started to be widely used only during the last few decades, and is still gaining popularity. 1 _______. The main good qualities of prestressed concrete are its high strength and durability. 2 _______. This combination is highly advantageous. 3 _______. For this reason any member of beam is under constant compression and as a result has no cracks.4 _______.

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Suspended plaster ceilings have been in use already for several decades. 1_______. Suspended ceiling is a finish ceiling. 2_______. Among them the most widely used are gypsum, board, plaster, and various boards made of fibers. 3_______. Ceilings produced of fibrous materials are classified as acoustical ceilings. 4_______.

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Classification and design of walls are divided into two categories: external and internal construction. 1_______. The function of external walls is to support the upper floors and roof. The units employed for construction of walls are brick, timber, or stone. 2_______. Their main function is dividing the space of the construction. 3_______. Their next function may be to transmit floor/ roof loads to a foundation. 4_______.

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Floors belong to one of the most important functional components of a building. 1_______. It depends on whether a hard or soft flooring is used. Floors also react in various ways with light. 2_______. As to dark flooring materials, they absorb light and this absorption makes a room darker. 3_______.
Floors are subject to moisture, dirt, and dust. They are also subject to the action of feet and the load of furniture. 4_______.

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When can water penetrate a wall? Three conditions are necessary. Firstly, there must be water present at the outer face of the wall. Secondly, there must be a crack or a hole in the wall through which the water can move. And thirdly, there must be a force that will move the water through this opening. If any of these conditions is absent, water will not penetrate a wall.
In what way can one keep water away from the walls of a building? One can eliminate all the openings from the wall in order to make a wall watertight.
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One can eliminate all the openings from the wall in order …