SCALES AND SCALE DRAWING, SIMPLE BLUEPRINT READING : LSUS

Basic Technology JSS3 First Term

WEEK ELEVEN

SCALES AND SCALE DRAWING, SIMPLE BLUEPRINT READING

PERFORMANCE OBJECTIVE

By the end of the lesson, the students should be able to learn:

  1. DEFINITION OF SCALE DRAWING
  2. MATERIALS AND INSTRUMENTS FOR SCALE DRAWING
  3. TYPES OF SCALE DRAWING
  4. MEASURING AND COMPARING GIVEN SIZES
  5. SIMPLE DETAILS OF A BUILDING PLAN
  6. COMMON SYMBOLS USED AND THEIR INTERPRETATIONS

CONTENT

DEFINITION OF SCALE DRAWING

Scale drawing can be defined as the accurate representation of objects in a determined proportion .Scale drawing is different from ordinary drawing in that it presents the object either reduced or enlarged. There are scales for reduction and for enlargement of the size of the object.

MATERIALS AND INSTRUMENTS FOR SCALE DRAWING

A. Metric rule

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