Unit 7. Excavation 1.
(Email)
Water seepage
From: Marcus-Adams@AdamsBuilders.com
To: Randy-Walters@waltersconstruction.com
Subject: Water seepage
Dear Randy,
I just wanted to let you know about a delay in construction.
We ran into a problem during today's excavation. While drilling, we encountered a large amount of seepage from groundwater. The water table in this area was unexpectedly high. Before we can proceed, we need to extract the water.
Since this isn't runoff of standing water, it won't be possible to let the water collect in a sump. The best way to solve this problem is by lowering the water level with a dewatering system. We will install a series of well-points throughout the area. As the water fills the well-points, we will use a pump to empty them. We will have to lower the water table by several feet.
I expect the process to take a few days. In the meantime, our crews will check the other areas of the construction site and mаke sure that this isn't a problem anywhere else.
If you have any questions, fell free to call me.
Marcus Adams.
1. Before you read the passage, talk about these questions.
1 What is used to remove water from an area?
2 How do workers get through areas of hard rock?
Reading
2. Read the email from a contractor to a project manager. Then, mark the statements as true (T) or false (F).
1 _ The worksite was flooded by runoff.
2 _ The crew cannot use a sump to solve the problem.
3 _ Work cannot continue until the water table is lowered.
Vocabulary
3. Write a word that is similar in meaning to the underlined text.
1. We need to survey the area before the process of digging holes into the ground can begin.
_ _ c a _ _ _ _ o _
2. Allow the liquid to enter the reservoir that collects water before you start to pump it
_ u _ _
3. Because we got so much snow last winter, there is a high amount of water flowing from land into rivers and streams this spring.
_ _ n _ f _
4. We can forcibly remove water from the ground using a pump.
_ _ t _ _ c _
5. The pipes that have been installed in the ground allow water to allow in while keeping sand and rocks out.
_ e _ _ - _ _ i n _ _
4. Fill in the blanks with the correct words and phrases from the word bank.
Water table groundwater pump drill dewatering system
1. A______is good way of lowering the underground water levels.
2. He attempted to _______ a hole in the ground, and hit a massive piece of rock.
3. The ______ rises and lowers according to environmental conditions, such as the amount of rainfall.
4. They used a ________ to collect the standing pool of water.
5. Most of our drinking supply comes from sources of _______ below the earth’s surface.
5. Listen and read the email from a contractor to a project manager again. How does a dewatering system remove water?
Listening
6. Listen to a conversation between a construction worker and a project manager. Choose the correct answers.
1. What is the conversation mainly about?
A. a problem with a sump
B. why a new well-point is needed
C. how to remove water from a site
D. the success of a dewatering system
2. What will the woman mostly likely do next?
A. install a sump
B. begin construction
C. remove the well-point
D. replace the broken equipment
7. Listen again and complete the conversation.
Manager: 1 ____ ___ Rachel?
Worker: Well, there's a huge pool of water where we 2 _________ ________ start building.
Manager: That’s 3 ____________ ___________ is it standing water? Or do you think it’s groundwater?
Worker: I’m 4 ___________ ___________. The area around it seems to be dry
Manager: Okay, well, let’s 5 ________ _______ ________ it.
Worker: All right. 6 ____________ ____________ let it collect in a sump and then pump it out? Or star installing well-points
Manager: Dewatering systems take a lot of time. We’d better go with the sump for now.
8. With a partner, act out the roles below based on Task 7. Then, switch roles.
USE LANGUAGE SUCH AS: We’ve got a problem.
Okay,well,let’s…
We’d better go with...
Student A: You are a construction worker. Talk to Student B about:
· water that you have encountered on the excavation site.
· methods of getting rid of the water
Student B: You are a project manager. Tell Student A how to get rid the water.
Writing
9. Use the email and the conversation from task 8 to fill out the manager’s daily status report.
Excavation Project
Status Report
Today’s task: _____________________________________________________
Problem: ________________________________________________________
Solution:_________________________________________________________
Приложение: