- •Предисловие
- •1. Read interesting facts about water, matching questions with the answers.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Read the text carefully paying attention to the terms in italics. Answer the following question.
- •4. Decide whether the following statements are true or false according to the text.
- •5. Answer the following questions.
- •6. Read the text again and make the plan of it.
- •7. Choose the best abstract for the text.
- •8. Match the words with their synonyms.
- •9. Match the words with their opposites.
- •10. Fill in the correct prepositions then choose any five items and make sentences.
- •11. Translate the following words into English using the vocabulary of the text.
- •12. Make sure you know the nouns formed from the following verbs.
- •13. Write down all adverbs from the text (not less than 8) then choose any four items and make your own sentences.
- •14. Find the translation of the following terms and memorize their meaning.
- •15. Read the first paragraph of Text b and answer the question.
- •16. The rest of the text about “Water in our daily life” is in the jumbled order. Look at the plan of the text, read the paragraphs and number them in the correct order according to the plan.
- •17. Study the diagram below and fulfill the following tasks using the information of Text b.
- •18. Find the translation of the following terms and memorize their meaning.
- •19. Skim the text. Answer the following question.
- •20. Decide whether the following statements are true or false according to the text.
- •21. Answer the following questions.
- •2 2. Make the plan of the text “Water-resources engineering” and write a short summary of the text.
- •23. Match the meanings of the terms with their definitions.
- •24. Fill in the correct preposition, then choose any five items and make sentences.
- •25. Fill in the tables.
- •26. Translate the following words into English using the vocabulary of the text.
- •27. Read the following text and fill in the missed words.
- •28. Translate the following extracts into English using the vocabulary of the texts.
- •29. Read the texts again and make notes under the following headings. Then use your notes to talk about water and water-resources engineering.
- •1. Choose the correct variant.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Skim the text. Answer the following question.
- •4. Finish the following sentences according to the text.
- •5. Answer the following questions.
- •6. Read the text again, make a plan of it and write a short summary of the text.
- •7. Match the meanings of the terms with their definitions.
- •8. Match the words with their synonyms.
- •9. Match the words with their opposites.
- •10. Make sure you know the verbs formed from the following nouns.
- •11. Fill in the correct prepositions then choose any five items and make sentences.
- •12. Translate the following words into English.
- •13. Fill in the table writing out from the text “Hydrology” the adjectives with the suffixes –al, -ant, -ible (-able), - ous, -ic. Then choose any five items and make your own sentences.
- •14. Find the translation of the following terms and memorize their meaning.
- •15. Read the text paying attention to the terms in italics. Answer the following question.
- •16. Answer the following questions.
- •20. Fill in the correct preposition, then choose any three items and make sentences.
- •21. Fill in the correct words from the list below.
- •22. Look at the following scheme. Get ready to speak about how people in cities get fresh water. You may use the keys below.
- •23. Translate the following extracts into English using the vocabulary of the texts.
- •24. Read the texts again and make notes under the following headings. Then use your notes to talk about hydrology.
- •1. Complete the sentences with the words from the list below.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Read the text to get the gist of it. Answer the following questions.
- •4. Finish the following sentences according to the text.
- •5. Fill in the table according to the text.
- •6. Answer the following questions.
- •7. Read the text again, make its plan and title it.
- •8. Make a short summary of the text.
- •9. Do you know the meaning of the following terms? Fill in the correct word from the list below.
- •16. Read the text to get the gist of it. Answer the following questions.
- •17. Decide whether the following statements are true or false according to the text.
- •18. Answer the following questions.
- •27. Find the translation of the following terms and memorize their meaning.
- •28. Read the text to get the gist of it. Answer the following question.
- •29. Answer the following questions.
- •30. Which requirements must be followed and which ones should be followed? Use the ideas in the box below.
- •31. Choose the best endings to the following statements.
- •38. Read the following texts and fill in the missed words. Get ready to speak about different types of reservoirs.
- •1) Standard reservoir
- •2) Hydroelectric reservoir
- •3) Irrigation reservoir
- •4) Flood control reservoir
- •5) Recreational reservoir
- •39. Translate the following extracts into English.
- •40. Read the texts again and make notes under the following headings. Then use your notes to talk about reservoirs.
- •1. Do you know types of dams? Match the pictures with the types of dams.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Answer the following questions. If you have any difficulties, look through the following text to get the necessary information.
- •4. Read the following text and write out
- •5. Finish the following sentences according to the text.
- •6. Decide whether the following statements are true or false according to the text.
- •7. Answer the following questions.
- •23. Read the title of the text. What can this text deal with? Read the text and answer the following questions.
- •24. Decide whether the following sentences are true or false according to the text.
- •25. Choose the answers to the questions.
- •26. Choose the best variant.
- •33. Fill in the correct prepositions, then choose any five items and make sentences.
- •34. Make the following sentences shorter.
- •35. Complete the following text with the words derived from the words in brackets.
- •36. Look at the table, fill in the blanks and fulfill the following tasks. World’s Highest and Largest Dams
- •37. Translate the following extracts into English using the vocabulary of the text.
- •38. Read the texts again and make notes under the following headings. Then use your notes to talk about dam classifications.
- •1. Find the translation of the following terms and memorize their meaning.
- •2. Skim the text.
- •3. Finish the following sentences according to the text.
- •4. Decide whether the following statements are true or false according to the text.
- •5. Answer the following questions.
- •6. Make a plan of the text and then write a short summary of it.
- •7. Match the meanings of the terms with their definitions.
- •8. Choose the odd word.
- •9. Match the words with their synonyms.
- •10. Find in the text the opposites of the following words.
- •11. Fill in the correct prepositions, then choose any five items and make sentences.
- •12. Find the translation of the following terms and memorize their meaning.
- •13. Read the text carefully paying attention to the words in italics. Answer the following question.
- •14. Finish the following sentences according to the text.
- •15. Decide whether the following statements are true or false according to the text.
- •16. Answer the following questions.
- •17. Make a plan and then a short summary of the text.
- •18. Choose the odd word.
- •19. Find in the text the synonyms of the following words.
- •20. Match the words with their opposites.
- •21. Fill in the correct prepositions then choose any five items and make sentences.
- •22. Make adjectives from the following words then choose any five items and make your own sentences.
- •23. Translate the following words into Russian.
- •24. Find the translation of the following terms and memorize their meaning.
- •25. Read the text carefully paying attention to the words in italics. Answer the following question.
- •26. Finish the following sentences according to the text.
- •27. Correct the following statements.
- •28. Answer the following questions.
- •29. Make a plan and then a short summary of the text.
- •30. Match the meanings of the terms with their definitions.
- •31. Match the words with their synonyms.
- •32. Match the words with their opposites.
- •33. Make sure you know the nouns formed from the following verbs.
- •34. Fill in the correct prepositions then choose any five items and make sentences.
- •35. Translate the following words into English using the vocabulary of the text.
- •36. Find the translation of the following terms and memorize their meaning.
- •37. Read the text to get the gist of it. Answer the following questions.
- •38. Correct the following statements.
- •39. Answer the following questions.
- •40. Make a plan and a summary of the text.
- •41. Choose the right meaning of the words in bold in the text “Earth-fill Dams”.
- •42. Choose the words with similar meaning from the two groups and arrange them in pairs.
- •43. Match the words with their opposites.
- •44. Using the dictionary add as many words as possible into the table.
- •45. Fill in the correct prepositions.
- •46. Translate the following phrases into English.
- •47. Find the translation of the following terms and memorize their meaning.
- •48. Read the text carefully paying attention to the terms in italics. Answer the following question.
- •49. Put the sentences in the right order according to the text.
- •50. Finish the following statements according to the text.
- •51. Answer the following questions.
- •52. Read the text again, make a plan of it. Write down an abstract for text e.
- •53. Match the words with their synonyms.
- •54. Match the words with their opposites.
- •55. Using the dictionary add as many words as possible into the table.
- •56. Translate the following phrases into English.
- •57. Find the translation of the following terms and memorize them.
- •58. Read the text to get the gist of it. Answer the following questions.
- •59. Decide whether the following statements are true or false according to the text.
- •60. Answer the following questions.
- •65. Fill in the necessary preposition then choose any five items and make sentences.
- •66. Translate from Russian into English.
- •67. Fill in the gaps with the right word.
- •68. Match, translate and answer the following questions. Make abstracts of the texts.
- •70. Read the texts again and get ready to speak about the process of construction and main features of one type of dams. Use the information from the previous task.
- •1. Study the following picture. Translate the terms into Russian.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Read the text to get the gist of it. Answer the following questions.
- •4. Finish the following sentences according to the text.
- •5. Answer the following questions.
- •6. Copy out the table and fill in it.
- •12. Find the translation of the following terms and memorize their meaning.
- •13. Read the text to get the gist of it. Answer the following question.
- •14. Answer the following questions.
- •15. Finish the following sentences according to the text.
- •16. Fill in the sentences with the words from the list below.
- •17. Using the dictionary add as many words as possible into the table.
- •18. Fill in the necessary prepositions then choose any five items and make sentences.
- •19. Write down all adverbs from Texts a and b.
- •20. Fill in the table writing out from Texts a and b the adjectives with the suffixes –al, -ant (-ent), -ible (-able), - er, -en. Then choose any five items and make your own sentences.
- •21. Fill in the gaps with the words listed below.
- •22. Put the jumbled paragraphs in the right order.
- •23. Translate the following extracts into English.
- •24. Read the texts again and make notes under the following headings. Then use your notes to talk about spillways, gates and outlet works.
- •1. Match the English and Russian equivalents.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Read the text to get the gist of it. Answer the following questions.
- •4. Decide whether the following statements are true or false according to the text.
- •5. Complete the following sentences according to the text.
- •6. Answer the following questions.
- •7. What valves and gates are used for different heads at the entrance of intakes and sluiceways? Fill in the table.
- •8. Make a plan, an abstract and then a summary of the text.
- •9. Choose the contextual meaning of the following words.
- •10. Match the words with their synonyms.
- •11. Match the words with their opposites.
- •12. Fill in the correct prepositions then choose any three items and make sentences.
- •13. Read the following text and choose the best abstract.
- •14. Translate into English.
- •15. Read the text again and make notes under the following headings. Then use your notes to talk about intakes.
- •1. Complete the following sentences with the words from the list below.
- •2. Guess the translation of the missed Russian equivalents.
- •3. Find the translation of the following terms and memorize their meaning.
- •4. Read the text to get the gist of it. Answer the following questions.
- •5. Decide whether the following sentences are false or true according to the text.
- •6. Match according to the text.
- •7. Answer the following questions.
- •8. Make a plan of the text and write a summary of the text.
- •10. Make sure you know the verbs formed from the following nouns.
- •11. Match the words with their synonyms.
- •12. Fill in the correct prepositions then choose any three items and make sentences.
- •13. Translate the following words into English using the vocabulary of the text.
- •15. Read the text to get the gist of it. Answer the following question.
- •16. Finish the following sentences according to the text.
- •17. Answer the following questions.
- •24. Read the text to get the gist of it. Answer the following questions.
- •25. Decide whether the following statements are true or false according to the text.
- •26. Put the following sentences in the right order according to the text.
- •27. Answer the following questions.
- •28. Make a plan of the text “Pressure Conduits” and write down its summary.
- •29. Match the words with their synonyms.
- •30. Find the opposites of the following words in the text.
- •31. Match the words in part a with part b. What materials are considered to be the principle pipe materials?
- •32. Translate the words in the brackets.
- •33. Read the following text and fill in the missed words.
- •34. Translate into English using the vocabulary of the texts.
- •4. Read the text to get the gist of it. Answer the following question.
- •5. Decide whether the following sentences are true or false according to the text.
- •6. Finish the following sentences according to the text.
- •7. Answer the following questions.
- •8. Divide the text into the parts according to the following plan.
- •9. Make a short summary of the text.
- •10. Match the terms with their definitions.
- •11. Match the words with their synonyms.
- •12. Match the words with their opposites.
- •13. Fill in the correct prepositions then choose three items and make sentences.
- •14. Read the following text about the major canals of the world and fill in the words listed below.
- •15. Translate the following text from Russian into English.
- •16. Read the text again and make notes under the following headings. Then use your notes to talk about intakes.
- •1. Match the terms with their definitions.
- •2. Find the translation of the following terms and memorize their meaning.
- •3. Read the text to get the gist of it. Answer the following questions.
- •4. Correct the false sentences according to the text.
- •5. Some irrigation water may be lost through evaporation, seepage and transpiration. State the places and the ways of water lost reducing, filling in the table.
- •6. Answer the following questions.
- •7. Make a short summary of the text.
- •8. Choose the contextual meaning of the following words used in Text a.
- •9. Match the words with their synonyms.
- •10. Fill in the correct prepositions then choose any five items and make your own sentences.
- •11. Find the translation of the following terms and memorize their meaning.
- •12. Read the text to get the gist of it. Answer the following questions.
- •13. Finish the following sentences according to the text.
- •14. Answer the following questions.
- •15. Fill in the table and be ready to speak about four general methods of applying irrigation water.
- •16. Match the terms with their definitions.
- •17. Match the words with their synonyms.
- •18. Fill in the correct prepositions then choose any five items and make your own sentences.
- •19. Read the following text and choose the right forms of the missed words (they are given below the text).
- •20. Fill in the words listed below.
- •21. Translate into English.
- •22. Read the texts again and make notes under the following headings. Then use your notes to talk about irrigation.
- •Contents
25. Read the text carefully paying attention to the words in italics. Answer the following question.
What parts does a buttress dam consist of?
Text C Buttress Dams
A buttress dam consists of a sloping membrane which transmits the water load to a series of buttresses at right angles to the axis of the dam. Concrete-buttress dams reduce material in the wall itself by using support buttresses around the outside base. There are several types of buttress dams, the most important ones being the flat-slab and the multiple-arch.
In locations where aggregate for concrete is not available in a sufficient quantity and the foundation rock is acceptable, flat-slab buttress dams may be constructed as well. In cross-section buttress dams resemble gravity dams, but with flatter upstream slopes. In a buttress dam a slab of reinforced concrete rests on a succession of upright buttresses. Their thickness and spacing between them must be sufficient to support the concrete slab and the load exerted by the water in the reservoir. Buttress spacing varies with height of dam. Closely spaced buttresses can be less massive and the slabs can be thinner but then more formwork is required. Concrete beams of diaphragms used as stiffeners between adjacent buttresses or concrete braces may be utilized to resist buckling of the buttresses. Sometimes hollow buttresses are used to increase the effective buttress width. One of the most interesting features of the flat-slab dam is its articulation, i.e. the slab is not rigidly attached to the buttresses. The joint between the slab and buttress is filled with asphaltic putty or some other compound. This permits each slab to act independently, and even minor settlement of the foundation may seriously harm the structure. Flat-slab and buttress dams are particularly adapted to wide valleys where a long dam is required and where foundation materials are of low strength. Placing the buttresses on spread footings one can reduce the foundation pressures. Flat-slab dams may be built on materials ranging from fine sand to solid rock. But the maximum practical height must be necessarily less on poor foundations.
The multiple-arch dams require a better foundation than the flat-slab dams do. Arches for a multiple-arch dam are designed in the same manner as for a single-arch dam, but cantilever action is commonly not taken into account. The design of a multiple-arch dam is more economical for high dams, where the savings in concrete and reinforcing steel are considerable.
Buttress dams are subjected the same forces as gravity and arch dams. Because of the slope of the upstream face, ice pressures are not usually important as the ice tends to slide up the dam. Uplift pressures are relieved by the gaps between the buttresses. The total uplift forces are usually small and can generally be neglected except when a mat foundation is used.
Buttress dams usually require only one-third to one-half as much concrete as gravity dams of similar height but they are not necessarily less expensive because a great deal of formwork and reinforcing steel is required. Since a buttress dam is less massive than a gravity dam, the foundation pressures are less and a buttress dam may be used on foundations which are too weak to support a gravity dam. If the foundation material is permeable, a cut-off wall extending to rock should be provided. The height of a buttress dam can be increased by extending the buttresses and slabs. Usually buttress dams are used where a future increase in reservoir capacity is expected. Powerhouses and water-treatment plants are usually placed between the buttresses of dams in order to obtain some savings in cost of construction.
The removal of overburden down to a suitable foundation and excavation of a trench for the cutoff wall are the first steps in the construction of buttress dams. Great care must be taken in the construction of formwork, handling of concrete and placing of reinforcing steel in order to obtain the strength and water tightness of the thin sections inherent in buttress dams. Deck and buttresses are placed in lifts of 12 ft or more, the buttress construction being kept well in advance of the deck. Keyways are required in all construction joints. Since buttress dams require much less concrete than gravity dams, the time for construction is usually less and the problem of water diversion somewhat simplified.