BPSC Civil Engineering Syllabus 2026: Section-wise Mains Optional Syllabus PDF

Civil Engineering combines analytical concepts with practical applications, making it one of the technical optional subjects in the BPSC Mains Examination. The BPSC Civil Engineering Syllabus 2026 covers the major branches of civil engineering, including structures, soil mechanics, fluid mechanics, irrigation, transportation, environmental engineering, and construction planning.

Since the questions are based on the topics prescribed in the official syllabus, candidates should prepare each section thoroughly and develop a balanced study plan that covers both theoretical concepts and problem-solving techniques. A systematic approach to the syllabus can help ensure comprehensive preparation for the examination. 

BPSC Civil Engineering Syllabus 2026 Overview

The Civil Engineering optional paper is divided into Section I and Section II. Section I focuses on structural engineering, fluid mechanics, soil mechanics, and computer programming. Section II covers building construction, transportation engineering, irrigation engineering, and environmental engineering.

BPSC Civil Engineering Syllabus 2026 Section I

Section I is divided into four parts. It focuses on structural analysis, fluid mechanics, soil engineering, and computer programming.

Part A: Theory and Design of Structures

This section covers the analysis and design of different structural components. You should understand the design principles along with the relevant IS Code recommendations.

Important topics include:

• Theory of structures

• Castigliano's First and Second Theorems

• Unit Load Method

• Method of Consistent Deformation

• Slope Deflection Method

• Moment Distribution Method

• Kani Method

• Moving Loads

• Shear Force and Bending Moment

• Influence Lines

• Three Hinged, Two Hinged and Fixed Arches

• Matrix Methods of Structural Analysis

• Structural Steel Design

• Design of Tension and Compression Members

• Built-up Beams

• Riveted and Welded Plate Girders

• Gantry Girders

• Stanchions with Battens and Lacings

• Highway and Railway Bridge Design

• Warren Girder

• Pratt Truss

• Reinforced Cement Concrete

• Limit State Method

• One-way and Two-way Slabs

• Staircase Slabs

• Rectangular, T and L Beams

• Compression Members

• Footings

• Retaining Walls

• Prestressed Concrete

• Loss of Prestress

Part B: Fluid Mechanics

This section focuses on the principles of fluid mechanics, hydraulic systems, and their engineering applications. 

• Fluid Properties

• Fluid Statics

• Forces on Plane and Curved Surfaces

• Fluid Kinematics

• Continuity Equation

• Rotational and Irrotational Flow

• Velocity Potential

• Stream Function

• Flow Nets

• Euler's Equation

• Energy and Momentum Equations

• Pipe Flow

• Free and Forced Vortices

• Hydraulic Machines

• Weirs

• Sluice Gates

• Orifice Meters

• Venturimeters

• Dimensional Analysis

• Buckingham Pi Theorem

• Similitude

• Model Laws

• Laminar Flow

• Reynolds Experiment

• Boundary Layer Theory

• Drag and Lift

• Turbulent Pipe Flow

• Hydraulic Grade Line

• Water Hammer

• Open Channel Flow

• Hydraulic Jump

• Specific Energy

• Gradually Varied Flow

• Surface Profiles

Part C: Soil Mechanics and Foundation Engineering

This section covers soil behaviour, site investigation, and the design of shallow and deep foundations. 

• Soil Composition

• Clay Minerals

• Effective Stress Principle

• Permeability

• Compressibility

• Shear Strength

• Direct Shear Test

• Triaxial Test

• Site Investigation

• Soil Sampling

• Plate Load Test

• Penetration Tests

• Types of Foundations

• Footings

• Raft Foundations

• Pile Foundations

• Floating Foundations

• Bearing Capacity

• Settlement Analysis

• Deep Foundations

• Well Foundations

• Earth Pressure

• Culmann's Method

• Reinforced Earth Walls

• Machine Foundations

• Soil Vibration

• Vibration Isolation

Part D: Computer Programming

This section covers the basics of programming and its engineering applications.

Topics include:

• Types of Computers

• Components of Computers

• Computer Languages

• FORTRAN Programming

• BASIC Programming

• Constants and Variables

• Arithmetic Expressions

• Library Functions

• Control Statements

• IF Statements

• DO Statements

• GO TO Statements

• CALL and RETURN Statements

• Input and Output Statements

• Arrays

• DIMENSION Statement

• Functions and Subroutines

• Flow Charts

• Civil Engineering Applications

BPSC Civil Engineering Syllabus 2026 Section II

Candidates have to answer questions from any two parts in this section.

Part A: Building Construction

This section includes construction materials, building components, planning principles, and project management techniques. 

• Construction Materials

• Brick and Clay Products

• Lime and Cement

• Damp Proofing

• Brick Masonry

• Cavity Walls

• IS Code Design

• Building Components

• Roofs

• Floors

• Ceilings

• Finishing Works

• Plastering

• Pointing

• Painting

• Building Planning

• Orientation of Buildings

• Fire-resistant Construction

• Repair of Buildings

• Ferrocement

• Fibre Reinforced Concrete

• Polymer Concrete

• Low-cost Housing

• Building Estimates

• Specifications

• PERT

• CPM

Part B: Transportation Engineering

This section covers highway planning, traffic engineering, geometric design, and pavement construction. 

• Road Classification

• Traffic Engineering

• Traffic Surveys

• Road Intersections

• Traffic Signs

• Road Markings

• Traffic Signals

• Highway Planning

• Geometric Design

• Flexible Pavement Design

• Rigid Pavement Design

• IRC Guidelines

• Pavement Layers

• Pavement Design Methods

Part C: Water Resources and Irrigation Engineering

This section focuses on hydrology, irrigation planning, groundwater, reservoirs, and hydraulic structures. 

• Hydrologic Cycle

• Precipitation

• Evaporation

• Infiltration

• Hydrograph

• Unit Hydrograph

• Flood Estimation

• Groundwater Flow

• Aquifers

• Tube Wells

• Pumping Tests

• Water Resource Planning

• Reservoir Planning

• Reservoir Sedimentation

• Flood Routing

• Crop Water Requirement

• Irrigation Methods

• Canal Design

• Canal Lining

• Regime Theory

• Water Logging

• Salinity Control

• Canal Structures

• Diversion Head Works

• Gravity Dams

• Earth Dams

• Spillways

• River Training Works

Part D: Environmental Engineering

This section includes water supply engineering, wastewater treatment, solid waste management, sanitation, and environmental protection. 

• Water Demand Estimation

• Surface Water

• Groundwater

• Water Quality

• Water Analysis

• Waterborne Diseases

• Drinking Water Standards

• Water Intake Systems

• Water Treatment

• Coagulation

• Flocculation

• Sedimentation

• Filtration

• Chlorination

• Water Distribution Systems

• Hardy Cross Method

• Pumping Stations

• Sewerage Systems

• Sewage Characteristics

• BOD

• COD

• Sewage Treatment

• Activated Sludge Process

• Trickling Filters

• Oxidation Ponds

• Septic Tanks

• Sludge Disposal

• Solid Waste Management

• Environmental Pollution

• Water Pollution Control

• Environmental Impact Assessment

• Sanitation

• House Drainage

• Rural Sanitation

BPSC Civil Engineering Syllabus 2026 PDF

You should download the official BPSC Civil Engineering syllabus PDF before beginning your preparation. The PDF provides the complete list of topics prescribed by the Bihar Public Service Commission. It also helps you avoid studying topics that are outside the syllabus.

Download BPSC Civil Engineering Syllabus PDF

BPSC Civil Engineering Preparation Tips

Following a preparation strategy can help you cover all the topics included in the BPSC Civil Engineering optional syllabus. Focus on building conceptual understanding, practising numerical problems, and revising each section regularly to strengthen your preparation.

• Complete the syllabus section-wise, beginning with Structural Engineering, Fluid Mechanics, and Soil Mechanics to build a strong conceptual foundation.

• Practise numerical problems regularly for topics such as Structural Analysis, Fluid Mechanics, Foundation Engineering, and Water Resources.

• Revise important formulas, IS Code provisions, and technical concepts from each section to improve retention.

• Solve previous years' BPSC Civil Engineering optional question papers to understand the exam pattern and frequently tested topics.

• After completing the syllabus, take mock tests and revise weak areas regularly.

Related Resources

• BPSC Syllabus

• BPSC Selection Process 

• BPSC Eligibility Criteria 

• BPSC Previous Year Question Paper

• BPSC Exam Calendar