The LSGD Grade 3 syllabus latest update is essential for candidates preparing for Overseer and Draftsman posts under Kerala PSC. A clear understanding of the syllabus helps you focus on scoring areas and manage your time effectively.
Since the exam covers core civil engineering fundamentals, a structured plan will give you an advantage.
LSGD Grade 3 Syllabus Latest – Key Highlights
Before exploring the LSGD Grade 3 syllabus latest, check these details:
• Posts: Overseer Grade III / Draftsman Grade III
• Category Numbers: 882/2025, 567/2025, 222/2025
• Total Marks: 100
• Exam Mode: OMR
• Subjects: Core Civil + Basics
Each section carries different weightage. Therefore, smart prioritization matters.
Building Materials (15 Marks)
The LSGD Grade 3 syllabus latest starts with fundamental material knowledge.
• Rocks, stones, bricks, lime, cement
• Pozzolanic materials – classification, types, uses
• Clay products – earthenware, stoneware, porcelain, terracotta, glazing
• Mortar – preparation, classification, types, uses
• Concrete – preparation, classification, types, uses
• Timber – structure, defects, seasoning, uses
• Admixtures – classification, types, uses
• Paints, varnishes, metals, plastics – classification, types, uses
Strong basics here improve overall understanding of construction topics.
Construction Technology (15 Marks)
• Components of a building
• Stone masonry, brick masonry, hollow blocks, composite masonry
• Types of bonds and elements
• Arches – terms, types, centering
• Lintels – wooden, brick, stone, steel, RCC
• Foundations – shallow and deep foundations
• Special foundations, pile foundations, black cotton soil foundations
Structures & Treatments
• Permanent and temporary structures
• Load bearing and framed structures
• Formwork, scaffolding, shoring, underpinning
• Partition – requirements and types
• Damp proofing, anti-termite treatment, weathering course
• Fire-proofing and its effects
Carpentry & Building Components
• Carpentry joints and fastenings
• Doors, windows, ventilators – parts, types, sizes
• Floors and flooring types
• Roofs – flat, pitched, truss (king post, queen post, mansard, etc.)
• Shell roofs and domes
This section requires clear conceptual understanding.
Building Drawing & Planning (10 Marks)
• Layout of drawing
• Lines, lettering, dimensioning
• Scales and projections
• BIS code (IS: 962-1989) basics
• Principles and objectives of planning
• Orientation and responsibilities
Additional Topics
• Building bye-laws as per ISI code
• Layout plan and key plan
• Submission drawing
• Safety provisions and green belt requirements
CAD Basics
• Operating system basics
• Hardware and software
• Introduction to CAD
• GUI and installation
• Basic CAD commands
This section is easy to score with practice.
RCC and Steel Structures (10 Marks)
This part of the LSGD Grade 3 syllabus latest covers structural basics.
• RCC materials and proportions
• Mixing of concrete and slump test
• Formwork and steel behavior
• Bar bending details as per IS code
Structural Elements
• Columns, beams, slabs (one-way and two-way)
• Retaining walls
• RCC framed structures
• Earthquake safety
Steel Structures
• Steel sections
• Fasteners and joints
• Tension and compression members
• Fabrication and construction details
Regular revision helps retain these topics.
Public Health & Sanitary Engineering (5 Marks)
• Terms in public health engineering
• Sanitation systems
• House drainage system
• Plumbing systems and fittings
• Water purification
• Sewer appurtenances
• Manholes and septic tanks
• Modern plumbing technologies
This section is short but important.
Roads, Railways, Bridges & Tunnels (10 Marks)
Roads
• Alignment principles
• Classification and construction
• Road components
• Curves and gradients
• Drainage systems
Bridges & Tunnels
• Components of bridges
• Superstructure and substructure
• Bridge classification and IRC loading
• Caissons and cofferdams
• Culverts
• Tunnel basics
Railways
• Permanent way and rail gauges
• Components and functions
• Rail joints and welding
• Creep and prevention
• Railway stations and yards
Concept clarity is key here.
Irrigation Engineering (10 Marks)
The LSGD Grade 3 syllabus latest also includes irrigation basics.
• Hydrology terms – duty, delta, base period
• Hydrograph and runoff
• Catchment area and CCA
• Rabi and Kharif crops
Irrigation Structures
• Storage and diversion works
• Dams, barrages, weirs
• Hydroelectric projects
• Canal systems and distribution
• Cross drainage works – aqueduct, siphon, etc.
This section is highly relevant for PSC exams.
Estimating & Costing (5 Marks)
• Units of measurement
• Importance of estimation
• Approximate and detailed estimates
• Quantity take-off methods
• Rate analysis and specifications
• Labour and materials
• Schedule of rates
• Trapezoidal and Simpson’s methods
Practice improves speed and accuracy.
Surveying & Levelling (10 Marks)
Surveying
• Instruments and terms
• Plain and geodetic surveying
• Chaining and plane table survey
• Compass survey and bearings
• Local attraction and declination
Levelling
• Principles of levelling
• Dumpy level and auto level
• Levelling staff types
• Adjustments and technical terms
• Reduced levels and contouring
These topics require both theory and practice.
Engineering Mechanics (10 Marks)
• Stress, strain, elasticity
• Hooke’s law and elastic limit
• Stress-strain curve for mild steel
• Mechanical properties
Advanced Concepts
• Centroid of plane figures
• Moment of inertia and radius of gyration
• Parallel and perpendicular axis theorems
• Friction and laws
Force Systems
• Resolution and composition of forces
• Resultant of forces
• Moments and torque
• Varignon’s theorem
• Equilibrium and Lami’s theorem
Understanding concepts will help solve numericals easily.
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📄 View Full LSGD Grade 3 Syllabus PDF
👉 OVERSEER_- DRAFTSMAN LSGD grade 3
Additionally, always cross-check topics with the official syllabus to avoid missing any section.
Preparation Strategy for LSGD Grade 3 Syllabus
Start your preparation with a clear plan.
• Focus on high-weight sections first
• Revise daily with short notes
• Practice previous year questions
• Take mock tests weekly
• Improve weak areas consistently
Meanwhile, avoid studying without a strategy.
💡 Final Thoughts
The LSGD Grade 3 syllabus latest covers all essential civil engineering basics. With proper planning and consistent effort, you can complete it effectively.
Stay focused, revise regularly, and aim for steady improvement. 🚀
