01 Theory Notes

CHAPTER 01 Introduction
SECTION 01 Construction Standard Code Structure
SECTION 02 Basic Concepts of Reinforced Concrete
SECTION 03 Properties of Materials
SECTION 04 Strength of Concrete
SECTION 05 Types of Concrete Strength
SECTION 06 Mechanical Properties of Concrete
SECTION 07 Concrete Volume Change
SECTION 08 Reinforcing Bars

CHAPTER 02 Design Methods
SECTION 01 Design method of reinforced concrete beams
SECTION 02 General structural analysis in strength design

CHAPTER 03 Bending Analysis and Design of Beams
SECTION 01 Basic Design Concepts
SECTION 02 Rectangular beams with single-reinforced steel
SECTION 03 Double-reinforced rectangular beam
SECTION 04 T-Beam

CHAPTER 04 Shear and Torsion
SECTION 01 Basic Concepts of Shear and Torsion
SECTION 02 Shear Design
SECTION 03 Shear Design for Special Cases
SECTION 04 Design of the Strut-Tie Model
SECTION 05 Torsional Design

CHAPTER 05 Anchoring and splicing of reinforcing bars
SECTION 01 Attachment and Fixation
SECTION 02 ANCHORAGE OF REINFORCED BAR
SECTION 03 Anchor Reinforcement Details
SECTION 04 Joints of reinforcing bars

CHAPTER 06 Usability and Durability
SECTION 01 Usability and Durability General
SECTION 02 Cracks
SECTION 03 Sagging
SECTION 04 Fatigue
SECTION 05 DURABILITY DESIGN

CHAPTER 07 Pillars
SECTION 01 Basic concepts of columns
SECTION 02 Column structural details
SECTION 03 Combination of axial compression and bending
SECTION 04 Column Design Principles
SECTION 05 Short story
SECTION 06 Jangju

CHAPTER 08 Slabs and Foundations
SECTION 01 Basic Concepts of Slabs
SECTION 02 Shear in slabs
SECTION 03 1-Way Slab
SECTION 04 2-Way Slab
SECTION 05 Basic Concepts of Expanded Foundations
SECTION 06 Independence Expansion Foundation
SECTION 07 Design of other expanded foundations

CHAPTER 09 Retaining Walls and Others
SECTION 01 Basic Concepts of Retaining Walls
SECTION 02 Design of retaining walls
SECTION 03 Structural Analysis of Retaining Walls
SECTION 04 Structural details of retaining walls
SECTION 05 Ramen
SECTION 06 Culvert
SECTION 07 Arch

CHAPTER 10 Prestressed Concrete
SECTION 01 Basic Concepts of Prestressed Concrete
SECTION 02 Materials
SECTION 03 Prestressing Method and Fixing Device
SECTION 04 Basic Concepts of PSC
SECTION 05 Introduction and loss of prestress
SECTION 06 Bending behavior of PSC members
SECTION 07 DESIGN OF PRESSERED MEMBERS
SECTION 08 PSC Bending Member Design

CHAPTER 11 BRIDGES AND STEEL STRUCTURES
SECTION 01 Criteria and specifications applicable to the test
SECTION 02 Bridge Design General Matters - Limit State Design Method
SECTION 03 Load-Limit State Design Method
SECTION 04 Bridge reinforcement and expansion joints
SECTION 05 Steel
SECTION 06 Tensile Members
SECTION 07 Compression Members
SECTION 08 Steel Connections General
SECTION 09 WELDING CONNECTIONS
SECTION 10 BOLT CONNECTIONS
SECTION 11 Seismic Design

APPENDIX 01 Bridge General
APPENDIX 02 Safety Evaluation Criteria for Existing Concrete Structures
APPENDIX 03 Terzaghi's ultimate bearing capacity

02 Past Exam Notes

CHAPTER 01 Introduction
CHAPTER 02 Design Methods
CHAPTER 03 Bending Analysis and Design of Beams
CHAPTER 04 Shear and Torsion
CHAPTER 05 Anchoring and splicing of reinforcing bars
CHAPTER 06 Usability and Durability
CHAPTER 07 Pillars
CHAPTER 08 Slabs and Foundations
CHAPTER 09 Retaining Walls and Others
CHAPTER 10 Prestressed Concrete
CHAPTER 11 BRIDGES AND STEEL STRUCTURES

03 Secret Note

PART 01 Secret ZIP
CHAPTER 01 Introduction
CHAPTER 02 Design Methods
CHAPTER 03 Bending Analysis and Design of Beams
CHAPTER 04 Shear and Torsion
CHAPTER 05 Anchoring and splicing of reinforcing bars
CHAPTER 06 Usability and Durability
CHAPTER 07 Pillars
CHAPTER 08 Slabs and Foundations
CHAPTER 09 Retaining Walls and Others
CHAPTER 10 Prestressed Concrete
CHAPTER 11 BRIDGES AND STEEL STRUCTURES
APPENDIX 01 Bridge General

PART 02 Problem Placement Table
CHAPTER 01 Introduction
CHAPTER 02 Design Methods
CHAPTER 03 Bending Analysis and Design of Beams
CHAPTER 04 Shear and Torsion
CHAPTER 05 Anchoring and splicing of reinforcing bars
CHAPTER 06 Usability and Durability
CHAPTER 07 Pillars
CHAPTER 08 Slabs and Foundations
CHAPTER 09 Retaining Walls and Others
CHAPTER 10 Prestressed Concrete
CHAPTER 11 BRIDGES AND STEEL STRUCTURES

PART 03 420 Questions for 9th Grade National and Local Government Examinations (10 Years)
CHAPTER 01 Introduction
CHAPTER 02 Design Methods
CHAPTER 03 Bending Analysis and Design of Beams
CHAPTER 04 Shear and Torsion
CHAPTER 05 Anchoring and splicing of reinforcing bars
CHAPTER 06 Usability and Durability
CHAPTER 07 Pillars
CHAPTER 08 Slabs and Foundations
CHAPTER 09 Retaining Walls and Others
CHAPTER 10 Prestressed Concrete
CHAPTER 11 BRIDGES AND STEEL STRUCTURES

PART 04 National/Regional Grade 9 Exam Questions by Year (2025)
01 2025 National Civil Service Grade 9
02 2025 Local Government/Office of Education/Seoul Metropolitan Government Grade 9

Introducing civil engineering civil servants

The biggest topic of discussion in the civil service examination in all series is passing in a short period of time.
Academy after academy is competing to promote short-term passing as its slogan.
But the reality revealed by statistics is often cold.
It is not easy to pass the exam with competition rates of dozens to one from the beginning.
However, the logic that the remaining dozens failed because they didn't try hard or because their study methods were wrong is not valid.
This question needs to be considered from the beginning: "Is it possible to pass a short-term exam with competition rates of tens to one from the start?" The civil engineering series can provide an answer to this question.

The characteristics of the civil engineering exam from an expert's perspective are as follows.

Feature 1.
High failure rate and low passing cutoff line compared to other series

The civil service exam has a high failure rate (average 70%) compared to other series.
However, considering the special nature of the calculation subject, it cannot be said to be high compared to administrative series (average 50%) and other technical series (average 60%).
So, it is difficult to see the high failure rate as the cause of the low passing cut-off line.
Rather, the cause can be found in the low competition rate.
※Failure: If you do not obtain the basic score for 8 out of 20 questions, you will fail regardless of your average score.

Feature 2.
Large number of candidates selected compared to the number of applicants

According to statistics, the number of civil engineering civil servants selected is large (1,268 people) compared to the number of applicants (3,755 people).
In other words, the national average competition rate is very low at around 3.0 to 1.
For example, the average competition rate for “Seoul + Gyeonggi + Incheon” remains at 2.5 to 1, so the consecutive shortage of civil engineering civil servants was perhaps predictable.
This trend is bound to continue unless the competition rate exceeds 7 to 1, which is twice the current level.
※Statistics are as of 2024, excluding national civil servants and education offices.

Feature 3.
Low staff retention rate compared to other series

Because the competition rate is low, the backlog of applicants is bound to be low.
This phenomenon has continued for several years, and recently, a shortage of candidates has occurred.
※Backlog ratio: refers to the accumulated ratio of test takers.

Feature 4.
High short-term passing rate compared to other series

Because the backlog ratio is low, the spectrum of test takers is very wide, from non-majors to majors.
So, civil engineering is bound to have many changes.
There are also students who pass the exam in a very short period of time, and on the other hand, there are also some unfortunate stories.
All of these phenomena are caused by the imbalance between the number of applicants and the number of people selected.

The issuing agencies need to understand this and make efforts to do so.
A one-time shortfall is a mistake, but if it happens repeatedly, it is necessary to find a self-help solution in the exam system.
That doesn't mean that easy problems are always well-made problems.
Rather, I believe that a well-crafted problem is one that can be ranked by evaluating the level of effort, while at the same time aiming to select excellent talent.

Test takers should not take a low passing score to mean they need to prepare less.
Test takers must pour all their efforts into it.
The opportunity to pass the exam in a short period of time is only given to those who are prepared.

The instructor has a responsibility to find and present the best method.
This textbook and lectures were prepared with the goal of achieving a feasible short-term passing score.
I will impart the skills I have accumulated through my experience with the largest number of test takers, and I will do my best to be with you until the very end.


For a more detailed introduction, search for Lee Hak-min Civil Engineering on YouTube.