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Surveying

ICSE · Class 12 · Geography

Complete topic list for Surveying in ICSE Class 12 Geography. Key concepts, sub-topics, and what to focus on for board exams.

69 questions38 flashcards5 concepts

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4 Topics · ICSE Class 12 Geography

Topics in Surveying

1

Meaning, Importance, and Types of Surveying

  • Surveying includes both linear and angular measurements.
  • Surveying helps in preparing maps of big or small areas.
  • It is useful for layout plans of roads, railways, buildings, multipurpose projects, towns, forests, and agricultural land boundaries.
2

Plane Table Survey: Meaning and Features

  • Plane table survey is based on the plane table instrument.
  • Its greatest advantage is that field work and plotting are done simultaneously in the field itself.
  • No field book is required in this method.
3

Instruments Used in Plane Table Survey

  • The main instruments are plane table with tripod stand, alidade, spirit level, plumbing fork and plumb bob, trough compass, chain, measuring tape, arrows, ranging rods, and drawing material.
  • The plane table is a drawing board of well seasoned pinewood fitted on a 1.5 metre long tripod stand.
  • The tripod stand helps in levelling the plane table.
4

Kinds of Chains, Tapes, Arrows, and Ranging Rods

  • Engineer’s chain is 100 ft long and has 100 links, so each link is 1 foot long.
  • Engineer’s chain is used to measure distances in feet.
  • Gunter’s chain is 66 ft or 22 yards long and has 100 links, so each link is 0.66 ft or 7.92 inches long.

Key Concepts

Central concept: Surveying as the art and science of determining the positions of objects on the ground by linear and angular measurements and representing them on a flat sheet of paper on a selected scale

Definition of surveyingImportance of surveyingBases of classificationSurvey based on accuracySurvey based on purposeSurvey based on instruments usedPlane table surveyInstruments used in plane table survey

Frequently Asked Questions

What are the important topics in Surveying for ICSE Class 12 Geography?
Surveying covers several key topics that are frequently asked in ICSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Surveying — ICSE Class 12 Geography?
Understand the core concepts first, then work through the 69 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All 25 chapters — ICSE Class 12 Geography Syllabus

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