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16. Fill in the blanks with the following prepositions or adverbs where necessary:

over; before; considerably; widely; after; with; therefore; with; of; on; by; to; in; as; for.

  1. ... the introduction … the railways and steam machinery, trans­portation and manufacturing costs were … reduced and concrete came to be more … used.

  2. …, good concrete was scarce and a great deal … poor concrete was used.

  3. The big break-through was the discovery of Portland cement … Joseph Aspdin in 1824, a worker in an English town.

  4. Portland cement was first used … a large scale … the construction … the Thames tunnel … 1828.

  5. Lambort, a French contractor, built a concrete boat … the Paris International Exhibition … 1855, … 2 inches sides reinforced … a skeleton … iron rods.

  6. W. Wilkinson, who patented a method of constructing a concrete floor … 1854, is considered to be the inventor … reinforced concrete as well.

  7. Monier did a great deal … develop the use … reinforced concrete and his name became so closely linked … reinforced concrete that reinforced concrete was known … the Monier System.

  8. Wilkinson also described method … the construction … pipes, reservoirs, and walls … concrete reinforced … metal sheets, bars and chains.

  9. Freyssinet is known … his work … prestressed concrete … which he had his first ideas … First World War.

  10. … the war steel was short in Europe and many architects had to use either reinforced or prestressed con­crete in their structures … order to economize … steel.

  11. Another big factor, which encouraged the use … concrete, was the introduction … fire regulations, which recognized the superiority … concrete … other structural materials … its fire resistance properties.

17. Find in the text answers to the following questions. Work in pairs. Use such expressions as:

I think/ suppose/ consider/ believe; to my mind/ in my opinion; as far as I remember/ know/ understand; Let me see…; How shall I put it?; Well, let me think…; Let's put it this way…; I'll have to think about that; The best way I can answer that is…; That's a good question.; That's a difficult question.

  1. When and where was Portland cement discovered? Who discovered it?

  2. When was Portland cement first used?

  3. When was the first idea of reinforced concrete mentioned?

  4. Who developed the use of reinforced concrete? What were the advantages of reinforced concrete?

  5. What factors encouraged the widespread use of concrete after the world war?

18. Give the definitions to the following terms:

 inventor

 tunnel

 powder

 lattice

 obtain

 erect

19. Match the following definitions with their terms:

1. to become aware of something that you did not know about before

a. rod

2. a person who designs buildings

b. substance

3. to remove something completely

c. discover

4. to become fixed in a substance firmly and deeply

d. architect

5. a long, thin metal or wooden bar

e. eliminate

6. a solid, powder, liquid, or gas with particular properties

f. to be embedded