Exercise 22. Read the sentence and choose the correct word.
1. The contractor will need a test pit / surface investigation ten feet deep at this location.
2. Some soil will have to be moved to make this area sand/level.
3. Can that test pit/ drill rig make a hole 25 meters deep?
4. Conduct a subsurface investigation / topographic survey to determine the foundation requirements.
5. The drill rig / soil profile shows a mix of clay and silt in this area.
Exercise 23. Match the parts of the word-combinations which come from the texts of this unit. Translate them and use in your own sentences:
| 1) three-dimensional; | a) data; |
| 2) land; | b) grid; |
| 3) data; | c) surveys; |
| 4) property; | d) measurements; |
| 5) land survey; | e) pressure; |
| 6) space; | f) boundaries; |
| 7) construction layout; | g) marks; |
| 8) precision; | h) axis; |
| 9) air; | i) technology; |
| 10) reference; | j) analysis; |
| 11) a standard map; | k) delineation; |
| 12) rocket launch; | l) maps; |
| 13) horizontal; | m) space position. Exercise 16. |
Exercise 24. Read the conversation between a construction company manager and an employee. Choose the correct answers.
1. What is the conversation mainly about?
A. Why a drill rig is necessary?
B. When clay soil might be dangerous?
C. How to increase the strength of soil?
D. What to do for a subsurface investigation?
2. What will the woman do?
A. Dig test pits.
B. Arrange a drill rig.
C. Obtain a soil profile.
D. Order stronger soil if needed.
Contractor:Scott I need you to start that subsurface investigation tomorrow.
Employee:Okay. What will be involved in that?
Contractor:We need a complete soil profile. There is probably a good mix of soil types there.
Employee:All right. Should I line up a drill rig?
Contractor:There is no need. It’s just for a house. Several small test pits should be fine.
Employee:I see. How far down should the test pits go?
Contractor:Three or four meters should be enough.
Employee:Got it. Anything else I should watch out for?
Contractor:Knowing that area, there is probably some weak clay soil. Let me know if you come across any.
Employee:Will do. Do you want me to find some stronger soil to bring in?
Contractor:No. I will take care of that. Just get me the soil data.
Employee:Sure thing.
Exercise 25. In the previous dialogue an employee and a contractor speak about various soil types. Go online and fill in the table about types of soils.
http://www.eschooltoday.com/soils/types-of-soil.html
Fig.8. Six soil types
| Soil types | Advantages | Disadvantages |
| Sandy soils | ||
| Silty soils | ||
| Clay | ||
| Loamy soils | ||
| Peaty soils | ||
| Chalky soils |
Exercise 26. Find answers to the following questions about “Theodolite” on the Internet. Discuss your answers with your groupmates?
a) Why is a theodolite regarded as a key surveying instrument?
b) What does a theodolite consist of?
c) How is a theodolite adjusted?
d) How is a leveling instrument operated?
e) Why are self-levelling instruments preferred on sites?
f) What is a digital electronic level?