JSS3 First Term Basic Technology Lesson Note – Building

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SUB-TOPIC TWO: BUILDING

SUB-TOPICS:

• Definition and function of foundation
• Types and materials for making walls

Content Development (NOTES FOR FIRST LESSON/PERIOD ONE)

Definition and function of foundation

Foundation.

The term foundation is the expanded base of a column in addition to the ground or sub-soil which supports the base. The ground or sub soil on which the building stands is the natural foundation, while the expanded base which is constructed of concrete or mansory materials like rocks, stones, bricks is called artificial foundation. The choice of foundation depends on the type of building to be constructed, the load imposed on the building and the type and nature of the soil.

Functions of foundation:

1. To receive the weight of the building.
2. To distribute the weight of the building to the ground effectively.
3. To hold the building firmly to the ground against external forces like wind, storms.
4. To transmit the weight of the building to the sub-soil or ground.
5. To sustain the dead load of the building.

Types of foundation:

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