Современные проблемы промышленного и гражданского строительства на занятиях английского языка. Кузьмина Е.В. - 11 стр.

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5. Look at these sentences:

The tensile strength of copper is approximately three times that of zinc.

Copper has a much higher tensile strength than zinc.

Now make similar sentences to compare the following:

a) Copper and aluminum with regard to their densities.

b) Zinc and oak with regard to their tensile strength.

c) Mild steel and aluminum with regard to their tensile strength.

d) Glass and concrete with regard to their densities.

e) Mild steel and copper with regard to their melting points.

Read this:

Oak is considerably heavier that pine, has a much higher tensile strength and

costs 2 Ѕ times more per kilogram.

Now compare the following in a similar way:

a) glass and concrete

b) aluminum and mild steel

c) copper and zinc

d) pine and mild steel

6. Read and learn the dialog:

Instructor: Right. Today, I’d like you to answer some questions about the

different types of components used in buildings. Now then, who can tell me the

names of the three different types of components?

Student 1: Umm… I think they are units, compound units and tubes.

Instructor: No, that’s not quite right – who can tell me which one of those

three is not correct?

Student 2: Er… Well, a tube is only an example of sectional component. The

three types of components are sections, units and compound units.

Instructor: Yes, that’s right. Now can you describe a section for me?