Lesson 33 Basics of Plane Table Surveying

Objective of Lesson 33

Introduction

• Advantages of Plane Table Survey
• Disadvantages of Plane Table Survey

Instruments

• Plane Tables
• Alidade
  • Plain Alidade
  • Telescopic Alidade
  • Digital Alidade
• Plumbing Fork
• Spirit Level
• Trough Compass
• Drawing Arrangements

Basic Principle of Plane Table Surveying

Setting of Instruments

• Fixing
• Centring
• Leveling

Temporary adjustment of Plane Table

Orientation of PlaneTable

• Orientation with a Trough Compass
• Orientation by Backsighting
• Orientation by Resection

Exercise 33

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