2015-07-21
597
I. Decide whether the following statements are true or false according to the text:
1. These loads include the weight and the stresses of the vehicles crossing them.
2. The kinds of bridges vary in the length of their spans.
3. It is very important to consider the maximum load the bridge will carry.
4. Each bridge incorporates two or more of the designs into a bridge.
5. Beam bridges typically span the greatest distance.
6. A beam bridge consists of a rigid horizontal member.
7. Beam bridges are rarely used in highway construction.
8. Girders are supported at both ends by natural land structure.
9. The span length of girder bridges ranges up to about 500 metres.
10. There are two types of girder bridges: a box girder bridge and a plate girder bridge.
II. Answer the following questions:
1. How do bridge designs differ?
2. What do these loads include?
3. What should engineers determine before deciding which kind of bridge to build?
4. What is a combination bridge?
5. What is the difference between beam bridges and suspension bridges?
6. What does a beam bridge consist of?
7. Where are beam bridges most commonly used?
8. What are the two main types of girder bridges?
9. Why is a box girder bridge called so?
10. When is a bridge called a plate girder bridge and when a reinforced?
