Question

D. Answer the following questions:
1. List the types of materials used in making a temporary house and a
permanent house. 1934
A
2.
Write two benefits of modern building materials.
3. What is a bridge? How is it useful?– 1937
4. Briefly explain any two types of bridges. 9 38
5. Highlight the differences between the lives of Lokhan and Ayaan.​

Answer 1

Answer:

1) The two kinds of permanent houses are flats and bungalows. (iii) The four materials used for building a house are bricks, cement, steel and glass. (iv) A house made of blocks of ice is called an igloo. (v) A weak house made up of mud, straw, leaves, etc, are called temporary house

2) Advantages of modern construction materials:

There are smaller demands on the facilities as well as the equipment construction site. The working environment is safer at the off-site production of the building components; The construction is faster over labor costs. There are fewer design errors.

3) A bridge is made up of two or more crowns for the teeth on either side of the gap -- these two or more anchoring teeth are called abutment teeth -- and a false tooth/teeth in between. These false teeth are called pontics and can be made from gold, alloys, porcelain, or a combination of these materials

4) There are six basic bridge forms: the beam, the truss, the arch, the suspension, the cantilever, and the cable-stay. Six basic bridge forms.

5) Highlight the differences between the lives of Lokhan and Ayaan. Ans: Lokhan lived in a small hut in the village and used bamboo bridge to cross the river, whereas Ayaan lived in a strong building and used bridges made of iron and Steel

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