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Учебное пособие. Английский язык в профессии.docx
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1) Decide whether the following statements are true or false:

  1. Concrete is a building material made of cement and aggregate.

  2. Air is needed for the concrete to harden.

  3. Reinforcement steel is added to better mouldability.

  4. Precast concrete can be made at a factory only.

  5. Concrete is not fire resistant.

2) Match the combinations from the left with their Russian equivalents:

  1. Precast concrete

  2. Reinforced steel

  3. Tensile stress

  4. Thermal insulator

  5. Fire resistance

  1. Напряжение при растяжении

  2. Сборный бетон

  3. Огнеупорность

  4. Арматурная сталь

  5. Теплоизоляция

3) Guess the word by its definition:

  1. Pieces of broken or crushed stone or gravel

  2. Any alien element or ingredient

  3. Easily set on fire

  4. A tine portion or fragment of something

  5. The ability to withstand wear, pressure or damage

4) Open the brackets and put the verbs in a correct form:

  1. The particles in the aggregate (bind) by the cement.

  2. The strength of concrete (depend) on the proportions of cement and aggregate.

  3. Certain properties (achieve) by including admixtures.

  4. Concrete (characterize) by high strength.

  5. High temperature (affect) the strength of concrete.

References: http://www.fao.org/docrep/s1250e/s1250e08.htm

Unit 8. Strip foundations.

Vocabulary.

Pier – опора

Artificial – искусственный

Rocks – камни, порода

Negligible – несущественный

Compaction – уплотнение

Bed - основание

The foundation of a building is that part of walls, piers and columns in direct contact with and transmitting loads to the ground. The building foundation is sometimes referred to as the artificial, and the ground on which it bears as the natural foundation. Ground is the general term for the earth’s surface, which varies in composition within the two main groups, rocks and soils. Rocks include hard, strongly cemented deposits such as granite and soil; the loose, uncemented deposits such as clay. Rocks suffer negligible compression and soils measurable compression under the load of buildings.

The size and depth of a foundation is determined by the structure and size of the building it supports and the nature and bearing capacity of the ground supporting it.

Strip foundations consist of a continuous strip, usually of concrete, formed centrally under load bearing walls. This continuous strip serves as a level base on which the wall is built and is of such a width as is necessary to spread the load on the foundations to an area of subsoil capable of supporting the load without undue compaction. Concrete is the material principally used today for foundations as it can readily be placed, spread and leveled in foundation trenches, to provide a base for walls, and it develops adequate compressive strength as it hardens to support the load on foundations. Before Portland cement was manufactured, strip foundations of brick were common, the brick foundation being built directly off firm subsoil or built on a bed of natural stones.

The width of a concrete strip foundation depends on the bearing capacity of the subsoil and the load on the foundations. The greater the bearing capacity of the subsoil, the less the width of the foundation for the same load.

Answer the questions:

  1. What is meant by “artificial foundation” and “natural foundation”?

  2. What do the size and depth of a foundation depend on?

  3. What function does a continuous strip of a foundation perform?

  4. What building material is used for foundations and why?

  5. What is the width of a foundation determined by?

Exercises: