Professional Engineer Construction Division | Construction Planning, Construction Equipment, and Estimation R04 Elective Subject II-1 Model Answers (All 4 Questions)

These are model answers compliant with the 2026 competency revisions. The answers incorporate perspectives on data-driven problem definition, consensus building with stakeholders, and sustainable outcomes based on the three aspects of the socio-economic environment. For details, please refer to Explanation of Competency Revisions.

This article is for the following people

• Those who are planning to take or are retaking the 2022 Professional Engineer Second-Stage Examination in the Construction Division, Construction Planning subject, and are working on preparation for Elective Subject II-1.

• Those who want to check model answers for all 4 questions so they can handle whichever one they choose on the actual exam, even though II-1 requires selecting only one out of four.

• Those who want to organize their arguments regarding slope protection selection criteria, points to note for the ECI method, revisions to fall prevention regulations, and countermeasures for concrete carbonation and rebar corrosion.

• Those who want to differentiate their answers from the practical perspective of having been involved in construction ordering and supervision as a former public servant (client).

• Those who want to confirm the sense of character count and argumentative density for one answer sheet (approx. 600 characters) using concrete examples.

What you will learn in this article

• The full text of the 2022 Construction Planning Elective Subject II-1 questions (all 4 questions from II-1-1 to II-1-4 are reprinted in the article)

• Argumentative frameworks for each of the 4 questions (II-1-1 Slope protection selection / II-1-2 ECI method overview and points to note / II-1-3 Background and content of fall prevention regulation revisions / II-1-4 Concrete carbonation and maintenance)

• Approaches from the perspective of having been involved in construction ordering and supervision as a former public servant (client), and differentiation points for each question

• Full model answers for all 4 questions (approx. 530–550 characters each) and checkpoints from the examiner's perspective

• Includes a PDF that allows you to print the questions + full model answers (can be used for handwriting practice on answer sheets)

This article provides example answers written from the practical experience of having been involved in construction ordering and supervision as a former public servant. Although "Construction Planning, Construction Equipment, and Estimation" was not a subject I passed, I have reflected the practical perspective of having been involved in construction projects across all 11 fields as a client.

This article presents model answers from a client's perspective for all 4 questions, II-1-1 through II-1-4, of the 2022 Professional Engineer Second-Stage Examination, Construction Division, Elective Subject II-1 (Construction Planning, Construction Equipment, and Estimation).

Elective Subject II-1 is a subject that tests the ability to apply specialized knowledge, and it is in a format that requires summarizing the answer on one sheet (approx. 600 characters).

On the actual exam, you will choose one question out of four to answer, but this article covers all questions asked so that you can handle whichever one you choose.

Each answer demonstrates how to construct the points required by the question in a logical chain and how to utilize the perspective of a client—specifically regarding review, ordering, and construction supervision—in your answer.

Please use these to help create your own answers while referring to the argumentative frameworks and the focus points from the client's perspective.

You can view a list of other articles and model answers by subject for the Construction Division from the "Construction Division Table of Contents."