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Bihar BTSC Laboratory Assistant (Civil) Syllabus 2026, Exam Pattern
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BTSC Laboratory Assistant (Civil) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about BTSC has published notification 2026 for the recruitment of Laboratory Assistant (Civil) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
BTSC Laboratory Assistant Syllabus 2026 - Overview
| Organization Name | Bihar Technical Service Commission (Bihar BTSC) |
| Posts Name | Laboratory Assistant (Civil) |
| No of Posts | 166 |
| Application Mode | Online |
| Category | Syllabus and Exam Pattern |
| Salary | Level-4 (Rs.25,500-81,100) |
| Job Location | Bihar |
| Official website | btsc.bihar.gov.in |
BTSC Laboratory Assistant (Civil) Syllabus 2026
Domain Knowledge (Civil) :
Building Materials :
1. Physical and Chemical properties
2. classification
3. standard tests
4. uses and manufacture/ quarrying of materials
5. Asbestos products
6. Timber and wood based products
7. Laminates
8. Paints
9. Varnishes
Estimating, Costing and Valuation :
1. Estimate
2. Glossary of technical terms
3. Analysis of rates
4. Items of work – earthwork, Brick work (Modular & Traditional bricks), RCC work, Shuttering, Timber work
5. Painting
6. Flooring
7. Plastering
8. Water Tank
9. Bar bending schedule
10. Valuation – Value and cost, scrap value, salvage value, assessed value, sinking fund, depreciation and obsolescence, methods of valuation
Surveying :
1. Principles of surveying
2. Measurement of distance
3. Chain surveying
4. Working of prismatic compass
5. Local attraction
6. Plane table surveying
7. Adjustment of theodolite
8. Leveling
9. Definition of terms used in leveling
10. Contouring, curvature and refraction corrections
11. Temporary and permanent adjustments of dumpy level
12. Tachometric survey
13. Advanced surveying equipment
Soil Mechanics :
1. Origin of soil
2. Phase diagram
3. Definitions-void ratio
4. Density index and interrelationship of different parameters
5. Grain size distribution curves and their uses
6. Index properties of soils
7. Atterberg's limits
8. ISI soil classification and plasticity chart
9. Permeability of soil
10. Triaxial test Soil compaction
11. Laboratory compaction test
12. Maximum dry density and optimum moisture content
13. Bearing capacity of soils
14. Standard penetration test
Hydraulics :
1. Fluid properties
2. Hydrostatics
3. Measurements of flow
4. Bernoulli's theorem and its application
5. Flow through pipes
6. Flow in open channels, weirs, flumes, spillways, pumps and turbines
Irrigation Engineering :
1. Definition, necessity, benefits
2. 2II effects of irrigation
3. Types and methods of irrigation
4. Hydrology – Measurement of rainfall
5. Water requirement of crops, duty, delta and base period
6. Kharif and Rabi Crops
7. Command area
8. Time factor
9. Crop ratio
10. Overlap allowance
11. Irrigation efficiencies
12. Different type of canals
13. Weir and barrage
14. Failure of weirs and permeable foundation
15. Slit and Scour
16. Kennedy's theory of critical velocity
17. Lacey's theory of uniform flow
18. Definition of flood, causes and effects, methods of flood control, water logging, preventive measure
19. Land reclamation
20. Characteristics of affecting fertility of soils
21. Major irrigation projects in India
Transportation Engineering :
1. Highway Engineering – cross-sectional elements, geometric design, types of pavements
2. Pavement materials – aggregates and bitumen
3. Design of flexible and rigid pavements – Water Bound Macadam (WBM) and Wet Mix Macadam (WMM), Gravel Road
4. Bituminous construction
5. Rigid pavement joint
6. Railway Engineering
7. Components of permanent way – sleepers, ballast, fixtures and fastening
8. Track geometry
9. Traffic Engineering – Different traffic survey, speed-flow-density and their interrelationships, intersections and interchanges, traffic signals, traffic operation, traffic signs and markings, road safety
Environmental Engineering :
1. Quality of water, source of water supply, purification of water, distribution of water
2. Need of sanitation
3. sewerage systems
4. circular sewer, oval sewer, sewer appurtenances, sewage treatments
5. Surface water drainage
6. Solid waste management – types, effects, engineered management system
7. Air pollution – pollutants, causes, effects, control
8. Noise pollution – cause, health effects, control
Theory of Structures :
1. Elasticity constants
2. Types of beams – determinate and indeterminate,
3. Bending moment and shear force diagrams of simply supported, cantilever and overhanging beams
4. Moment of area and moment of inertia for rectangular & circular sections
5. Chimneys, dams and retaining walls, eccentric loads, slope deflection of simply supported and cantilever beams
6. Critical load and columns
7. Torsion of circular section
Concrete Technology :
1. Properties, Advantages and uses of concrete
2. Cement aggregates
3. Importance of water quality
4. Water cement ratio
5. Workability
6. Mix design
7. Storage, batching, mixing, placement, compaction, finishing and curing of concrete
8. Quality control of concrete
9. Hot weather and cold weather concreting
10. Repair and maintenance of concrete structures
RCC Design :
1. RCC beams-flexural strength, shear strength, bond strength
2. Design of singly reinforced and doubly reinforced beams
3. Cantilever beams
4. T-beams
5. Lintels
6. One way and two way slabs
7. Isolated footings
8. Reinforced brick works, columns, staircases, retaining wall, water tanks (RCC design questions may be based on both Limit State and Working Stress methods)
Steel Design : Steel design and construction of steel columns, beams roof trusses plate girders
Domain Knowledge (Civil) :
Building Materials :
1. Physical and Chemical properties
2. classification
3. standard tests
4. uses and manufacture/ quarrying of materials
5. Asbestos products
6. Timber and wood based products
7. Laminates
8. Paints
9. Varnishes
Estimating, Costing and Valuation :
1. Estimate
2. Glossary of technical terms
3. Analysis of rates
4. Items of work – earthwork, Brick work (Modular & Traditional bricks), RCC work, Shuttering, Timber work
5. Painting
6. Flooring
7. Plastering
8. Water Tank
9. Bar bending schedule
10. Valuation – Value and cost, scrap value, salvage value, assessed value, sinking fund, depreciation and obsolescence, methods of valuation
Surveying :
1. Principles of surveying
2. Measurement of distance
3. Chain surveying
4. Working of prismatic compass
5. Local attraction
6. Plane table surveying
7. Adjustment of theodolite
8. Leveling
9. Definition of terms used in leveling
10. Contouring, curvature and refraction corrections
11. Temporary and permanent adjustments of dumpy level
12. Tachometric survey
13. Advanced surveying equipment
Soil Mechanics :
1. Origin of soil
2. Phase diagram
3. Definitions-void ratio
4. Density index and interrelationship of different parameters
5. Grain size distribution curves and their uses
6. Index properties of soils
7. Atterberg's limits
8. ISI soil classification and plasticity chart
9. Permeability of soil
10. Triaxial test Soil compaction
11. Laboratory compaction test
12. Maximum dry density and optimum moisture content
13. Bearing capacity of soils
14. Standard penetration test
Hydraulics :
1. Fluid properties
2. Hydrostatics
3. Measurements of flow
4. Bernoulli's theorem and its application
5. Flow through pipes
6. Flow in open channels, weirs, flumes, spillways, pumps and turbines
Irrigation Engineering :
1. Definition, necessity, benefits
2. 2II effects of irrigation
3. Types and methods of irrigation
4. Hydrology – Measurement of rainfall
5. Water requirement of crops, duty, delta and base period
6. Kharif and Rabi Crops
7. Command area
8. Time factor
9. Crop ratio
10. Overlap allowance
11. Irrigation efficiencies
12. Different type of canals
13. Weir and barrage
14. Failure of weirs and permeable foundation
15. Slit and Scour
16. Kennedy's theory of critical velocity
17. Lacey's theory of uniform flow
18. Definition of flood, causes and effects, methods of flood control, water logging, preventive measure
19. Land reclamation
20. Characteristics of affecting fertility of soils
21. Major irrigation projects in India
Transportation Engineering :
1. Highway Engineering – cross-sectional elements, geometric design, types of pavements
2. Pavement materials – aggregates and bitumen
3. Design of flexible and rigid pavements – Water Bound Macadam (WBM) and Wet Mix Macadam (WMM), Gravel Road
4. Bituminous construction
5. Rigid pavement joint
6. Railway Engineering
7. Components of permanent way – sleepers, ballast, fixtures and fastening
8. Track geometry
9. Traffic Engineering – Different traffic survey, speed-flow-density and their interrelationships, intersections and interchanges, traffic signals, traffic operation, traffic signs and markings, road safety
Environmental Engineering :
1. Quality of water, source of water supply, purification of water, distribution of water
2. Need of sanitation
3. sewerage systems
4. circular sewer, oval sewer, sewer appurtenances, sewage treatments
5. Surface water drainage
6. Solid waste management – types, effects, engineered management system
7. Air pollution – pollutants, causes, effects, control
8. Noise pollution – cause, health effects, control
Theory of Structures :
1. Elasticity constants
2. Types of beams – determinate and indeterminate,
3. Bending moment and shear force diagrams of simply supported, cantilever and overhanging beams
4. Moment of area and moment of inertia for rectangular & circular sections
5. Chimneys, dams and retaining walls, eccentric loads, slope deflection of simply supported and cantilever beams
6. Critical load and columns
7. Torsion of circular section
Concrete Technology :
1. Properties, Advantages and uses of concrete
2. Cement aggregates
3. Importance of water quality
4. Water cement ratio
5. Workability
6. Mix design
7. Storage, batching, mixing, placement, compaction, finishing and curing of concrete
8. Quality control of concrete
9. Hot weather and cold weather concreting
10. Repair and maintenance of concrete structures
RCC Design :
1. RCC beams-flexural strength, shear strength, bond strength
2. Design of singly reinforced and doubly reinforced beams
3. Cantilever beams
4. T-beams
5. Lintels
6. One way and two way slabs
7. Isolated footings
8. Reinforced brick works, columns, staircases, retaining wall, water tanks (RCC design questions may be based on both Limit State and Working Stress methods)
Steel Design : Steel design and construction of steel columns, beams roof trusses plate girders
BTSC Laboratory Assistant (Civil) Exam Pattern 2026
Duration : 120 Minutes
Negative Marking : 0.25
Exam Date 2026 : Notified Soon
Negative Marking : 0.25
| S.No | Subject | No.of Question | Marks |
| 1 | Technical Subject | 100 | 100 |
| Total | 100 | 100 |
Exam Date 2026 : Notified Soon
Starting Date of Application Form : 06th April 2026
Last Date of Application Form : 06th May 2026
Total Post : 166
FAQs
Bihar Btsc Laboratory Assistant (civil) 2026 Exam Syllabus Frequently Asked Questions (FAQ's)
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