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11. Answer the following questions:

1. What do plumbers do during construction? 2. What is necessary to install to keep out sewages? 3. What is the trap used for? 4. When do the traps function properly? 5. Where does a cast-iron waste disposal pipe run from? 6. What is necessary to install in areas without a city sewerage system to hold sewage until it dissolves? 7. Where does water from the sewage flow? 8. What is the function of insulation? 9. When does heat pass from the warm air to the cold air? 10. What creates dead-air space? 11. What saves fuel costs in heating a house? 12. What is insulation made from? 13. What does the type of insulation used depend on? 14. Do most houses have central heating systems? 15. What supplies heat for the entire house? 16. What passes through radiators that stand throughout the house? 17. When may air-conditioning units be used? 18. Who paints the rooms and finishes the floors? 19. Why does the owner hire a professional interior decorator to do some jobs? 20. What is the last step in building a house? 21. Why is it important to keep the natural outline of the land?

12. Agree or disagree with the following statements:

1. During construction, plumbers install the pipes that will supply heat and ventilation. 2. These pipes carry away cold water. 3. Plumbers also install special cranes to keep out sewages. 4. The trap used for bathroom washbasins is a V-shaped pipe which locates directly above the drain. 5. To function properly, traps must have inside ventilation of the air. 6. A cast-iron waste disposal pipe connects with another pipe made of metal. 7. This pipe connects home-disposal pipe with the sewage system of the city. 8. In areas without a city sewerage system, a sink near the house holds sewage until it comes into ground. 9. Insulation increases the amount of heat or cold that passes through walls, floors, and ceilings of a house. 10. In winter the cold outside passes into the house. 11. Insulation fills the air spaces in walls, floors, and ceilings and creates dead-air space. 12. Insulation is made from many materials, including cotton, wool, wadding etc. 13. The type of insulation used depends on size of a house. 14. Only some houses have central heating systems. 15. One furnace or heating unit, supplies heat for all houses in a certain region. 16. Such houses are heated by hot air or warm water. 17. In radiant heating, cold-water pipes run between the walls. 18. In a new house, the builder usually makes all repaired works as a part of the contract with the homeowner. 19. The owners move into a ready flat to live in. 20. The owners of the flats clean themselves the territory near their house.

13. Choose a word to put into each gap:

The drain, a loose, dissolves, insulation, waste disposal pipe, fixtures and sinks, sewerage, sheathing, traps, the sludge, an air conditioner, dead-air space, moisture, perlite, hires, radiant heating, washbasins, a septic tank, interior decorator, fuel costs, a flaky mineral, landscaping, furnace.

1. Plumbers install bathroom … just before other workers add the finishing touches to the house. 2. Plumbers also install … to keep out sewages. 3. The trap used for bathroom … , for example a P-shaped pipe, locates directly below … . 4. A cast-iron … connects with a pipe of another material, usually clay. 5. In areas without a city … system, … near the house holds sewage until it … . 6. … remaining in the tank must be removed at intervals. 7. … fills the air spaces in walls, floors, and ceilings and creates … . 8. Insulation can save … in heating a house. 9. A glassy lava is called … . 10. … is called vermiculite. 11. Insulation comes as blankets, boards, paper and … . 12. Insulation is also available in …, crumb like form. 13. One … or heating unit, supplies heat for the entire house. 14. In … , hot-water pipes run under the floors or in the ceilings or walls. 15. … takes warm air from the house, cools it, removes … , and recirculates cool air. 16. Sometimes the owner … a professional … to do this job. 17. … is the last step in building a house.

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