TNPSC ITI Trade: Surveyor (Code 387) Syllabus: A Comprehensive Guide

"For aspirants preparing for the Tamil Nadu Public Service Commission (TNPSC) examinations in Trade: Surveyor (ITI Standard, Subject Code 387), a precise understanding of the official syllabus is paramount. This subject encompasses fundamental and advanced surveying techniques, alongside modern instrumentation like AutoCAD, Total Station, and GPS. This guide meticulously details each unit, outlining critical areas for effective preparation for the Combined Technical Services Examination (Diploma / ITI Level), as outlined in Notification No. 10/2025. The question paper for this subject will be available in both English and Tamil."

"Examination Details: Combined Technical Services Examination (Diploma / ITI Level)"

• "Notification No.: 10/2025"
• "Issue Date: June 13, 2025"
• "Associated Posts:
  • "Surveyor (Post Code: 3378)."
  • "Junior Training Officer (Surveyor) (Post Code: 3643)."
  "
• "Online Application Last Date: July 12, 2025, at 11:59 PM."
• "Application Correction Window: July 16, 2025, at 12:01 AM to July 18, 2025, at 11:59 PM (three days)."
• "Examination Dates:
  • "Paper I (Tamil Eligibility Test, General Studies, Aptitude and Mental Ability, Code 501): August 31, 2025, Forenoon."
  • "Paper II (Subject Paper, Code 387): Specific date and time to be announced on the Commission's website. Broadly scheduled between September 7, 2025, and September 15, 2025."
  "
• "Mandatory Appearance: Compulsory to appear for both Paper I and Paper II. Failure to do so will result in disqualification."
• "Paper I Structure (SSLC Standard):
  • "Total: 100 objective questions, 150 marks."
  • "Part A: Tamil Eligibility Test (minimum 60 marks to qualify)."
  • "Part B: General Studies (75 questions, Degree Standard)."
  • "Part C: Aptitude and Mental Ability (25 questions, SSLC Standard)."
  "
• "Paper II Structure (Subject Paper - Trade: Surveyor):
  • "200 objective questions (ITI Standard)."
  • "Duration: 3 hours."
  • "Maximum Marks: 300."
  "
• "Total Marks for Selection: 450 (sum of Part B and Part C of Paper I, and Paper II)."
• "Evaluation Criteria: Paper II and Parts B and C of Paper I will be evaluated only if a minimum of 40% (60 Marks) is secured in Part A of Paper I."
• "Examination Mode: Paper I is OMR-based, Paper II is Computer Based Test (CBT)."
• "Application Process and Fees:
  • "Online applications only via Commission’s website, requiring One Time Registration (OTR)."
  • "Examination Fee: Rs. 100. Additional Rs. 100 for each extra subject paper (non-refundable)."
  • "Payment: Exclusively online (Net Banking / Credit card / Debit card / UPI)."
  • "Examination Centers: Two preferred district centers can be selected. Candidates with benchmark disabilities choose one center."
  "

"Official Syllabus Breakdown: TNPSC ITI Trade - Surveyor (Code 387)"

"The syllabus for Trade: Surveyor at the I.T.I. Standard is structured into the following units. Aspirants should systematically cover these units for comprehensive preparation, noting that question distribution is indicative."

"Unit I: Basic Engineering Drawing (20 Questions)"

• "Importance of Engineering Drawing: Significance in civil engineering projects."
• "Drawing Instruments: Familiarisation with and proper use of drawing board, 'T' Square, Mini Drafter, Set squares, Scales, Protractor, and other relevant instruments."
• "Standard Specifications: Adherence to Indian Standard (BIS) specifications for drawing practices."
• "Drawing Sheet Handling: Proper methods for layout and folding of drawing sheets."

"Unit II: Plain Table Surveying (25 Questions)"

• "Principles of Plane Table Surveying: Understanding the fundamental concepts."
• "Methods of Plane Table Surveying: Radiation, Intersection, Traversing, and Resection methods."
• "Instruments and Accessories: Identification and uses of plane table, alidade, trough compass, spirit level, plumbing fork, drawing paper, etc."

"Unit III: Levelling & Contour Survey (20 Questions)"

• "Types of Levelling: Simple levelling, differential levelling, fly levelling, profile levelling, reciprocal levelling."
• "Levelling Instruments: Dumpy level, auto level, tilting level, and levelling staff."
• "Errors in Levelling: Common errors and their rectification."
• "Booking Methods: Height of Instrument (H.I.) method and Rise and Fall method."
• "Reduced Levels: Calculation of Reduced Levels (R.L.) from field observations."
• "Contour Surveying:
  • "Concept and characteristics of contours."
  • "Methods of contouring (direct and indirect)."
  • "Uses of contour maps."
  "

"Unit IV: Auto CAD (30 Questions)"

• "Fundamentals of AutoCAD: Introduction to the software environment."
• "AutoCAD Interface: Understanding the user interface, command line, ribbons, toolbars."
• "Drawing Commands: Usage of basic drawing commands (e.g., LINE, CIRCLE, ARC, RECTANGLE, POLYGON)."
• "Editing Tools: Application of editing tools (e.g., TRIM, EXTEND, OFFSET, MIRROR, MOVE, COPY, ROTATE, ERASE)."
• "Drawing Types: Creating various types of engineering drawings (e.g., orthographic views, isometric views)."

"Unit V: Chain Surveying (20 Questions)"

• "History and Principles: Evolution and fundamental principles of chain surveying."
• "Instruments: Chain, tape, ranging rods, arrows, cross staff, optical square, and their uses."
• "Error Checks: Methods for checking errors in chain surveying."
• "Area and Volume Computation: Calculation techniques for areas and volumes from chain survey data."

"Unit VI: Theodolite (40 Questions)"

• "Uses and Classification of Theodolites: Understanding different types (e.g., transit, non-transit) and their applications."
• "Temporary Adjustments: Setting up the theodolite (centering, levelling, eliminating parallax)."
• "Methods of Traversing: Included angle method, deflection angle method, direct angle method."
• "Traverse Checking: Methods for checking accuracy of traverses (e.g., Bowditch rule, Transit rule)."
• "Measurement of Angles: Horizontal and vertical angles."

"Unit VII: Tachometry (10 Questions)"

• "Methods of Tachometry: Detailed explanation of Fixed Hair method (Stadia method) and Movable Hair method (Subtense bar method)."
• "Determination of Distances: Calculation of horizontal and vertical distances using tacheometric observations."

"Unit VIII: Setting out Curves (15 Questions)"

• "Classification of Curves: Simple circular curves, compound curves, reverse curves, transition curves, vertical curves."
• "Elements of Curves: Tangent length, curve length, apex distance, mid-ordinate."
• "Methods for Setting Out Horizontal Curves: Offset from tangent method, Rankine's method of deflection angles, two-theodolite method."

"Unit IX: Total Station (35 Questions)"

• "Introduction to Total Station: Explanation of the instrument and its functionalities."
• "Components: Identification and function of various components of a total station."
• "Setup Procedures: Field procedures for setting up and operating a total station."
• "Electronic Display and Data Recording: Understanding electronic data recording, field computers, and internal memories."
• "Coordinate Systems: Application of rectangular and polar coordinate systems in total station measurements."

"Unit X: Global Positioning System (GPS) (40 Questions)"

• "Introduction to GPS: Explanation of the Global Positioning System."
• "GPS Coordinate Systems: Understanding Geographic latitude and longitude, and other coordinate systems used by GPS."
• "Satellite and Conventional Geodetic Systems: Definitions and distinctions."
• "GPS Components and System Segments: Basics of GPS equipment (receivers) and system segments (space segment, control segment, user segment)."

"Important Note for Aspirants: This comprehensive syllabus for Trade: Surveyor (Code 387) at the ITI Standard provides a robust framework for examination preparation for the Surveyor and Junior Training Officer (Surveyor) roles. Aspirants are strongly advised to meticulously cover all topics, focusing on both theoretical understanding and practical applications of surveying principles and modern instruments. Consistent revision and problem-solving practice are essential for success in this competitive examination."

"Success in the TNPSC Trade: Surveyor (Code 387) examination requires a disciplined and strategic approach. By gaining a strong command of foundational surveying techniques, proficiency in AutoCAD, and an understanding of advanced tools like Total Station and GPS, aspirants can significantly enhance their performance and achieve their career objectives in this vital field."

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