1級土木施工管理学科過去問題/令和7年1次～平成23年

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About this app

For preparation for the 2026 exam.
Includes questions from the first round of 2025 through 2011.
There are no in-app charges and no ads.
For each question, you can immediately check the answer by clicking [Question ⇒ Answer].
The question text is also listed on the answer page, making it easy to review the questions.
You can check your level of understanding with the "Study Confirmation Test" (R6 to H28), which randomly presents questions [10 questions/multiple questions].
By question type, you can concentrate on studying multiple-choice questions 1-15 from 2022 through 2011 morning exams.
Study little by little during your commute on the train or bus, or during breaks.
*Includes exams from the following years: 2025 1st Exam, 2024 1st Exam, 2023 1st Exam, 2022 1st Exam, 2021 1st Exam, 2020 1st Exam, 2019 1st Exam, 2018 1st Exam, 2017 1st Exam, 2016 1st Exam, 2015 1st Exam, 2014 1st Exam, 2013 1st Exam, 2012 1st Exam, and 2011 1st Exam.

Suitable for reviewing past exam questions.

One of the key elements to obtaining a qualification is reviewing past exam questions.

By reviewing past exam questions, you can understand the structure of the questions, the types of questions that tend to appear, and your strengths and weaknesses. You can also use past exam questions to plan your exam preparation and exam strategy, including which areas to focus on and where to score points.

Grasp the question trends, find your own study method, and study systematically.
[Sample Question]
2024 Problem A [No. 7]
Which of the following statements regarding points to keep in mind when using on-site soil as road embankment material is inappropriate?
Materials that are problematic in terms of embankment stability or settlement should be spread as thickly and evenly as possible in the lower layer of the embankment, or used on slopes, etc.
2024 Problem A [No. 8]
Which of the following statements regarding information-based construction of embankments using TS (total station) and GNSS (global navigation satellite system) is inappropriate?
When compacting embankment material, to ensure the number of compaction cycles determined in the test construction, compaction should be performed until the color of the representative point set within the embankment area on the compaction cycle distribution map displayed on the monitor of the in-vehicle computer indicates that the specified number of compactions has been completed.
2024 Problem A [No. 9]
Which of the following statements regarding points to keep in mind when using construction soil to backfill structures is inappropriate?
The soil used for backfilling should be highly compressible so that gaps and steps do not form between the road and the structure after it is opened to traffic.
FY2024 Question A [No. 10]
Which of the following statements regarding soft ground countermeasures is inappropriate?
The high-pressure jet mixing method uses a mixing blade to forcibly mix in-situ soft soil and a hardening material to form stabilized soil and increase skid resistance.
FY2024 Question A [No. 11]
Which of the following statements regarding coarse aggregate for concrete is inappropriate?
When using crushed stone, the unit water content must be smaller than when using gravel to obtain concrete with good workability.
FY2024 Question A [No. 12]
Which of the following statements regarding testing methods for concrete aggregate is inappropriate?
The suitability of aggregate quality for repeated freezing and thawing is determined by a coarse aggregate wear test using a Los Angeles testing machine.
FY2024 Problem A [No. 13]
Which of the following statements regarding concrete mix proportions is appropriate?
When setting the slump taking into account the compaction height, if the compaction height is 2m and 0.5m, the slump value for the 2m height should be set higher.
FY2024 Problem A [No. 14]
Which of the following statements regarding cold weather and hot weather concreting is inappropriate?
If the daily minimum temperature is expected to be below 4°C during concrete construction, cold weather concreting must be used.
FY2024 Problem A [No. 15]
Which of the following statements regarding concrete curing is inappropriate?
When curing concrete using blended cement type B, the moist curing period is shorter than for concrete using ordinary Portland cement.
FY2024 Problem A [No. 16]
When construction conditions are the same, which of the following statements regarding the lateral pressure of fresh concrete acting on formwork is inappropriate?
The higher the concrete temperature, the greater the lateral pressure.
FY2024 Question A [No. 17]
Which of the following statements regarding various foundation types for road bridge substructures is inappropriate?
With spread foundations, the shear plane caused by the foundation's sliding occurs deep in the foundation's base, so it is essential to avoid excessive ground disturbance during construction.
FY2024 Question A [No. 18]
Which of the following statements regarding the construction of steel pipe pile foundations using the driven pile method is appropriate?
The driving control for support pile foundations is performed by confirming that the driving depth and rebound amount per driving are the same as those of the test piles.
FY2024 Question A [No. 19]
Which of the following statements regarding the construction of cast-in-place piles is inappropriate?
With the all-casing method, the top of the concrete does not drop when the casing tube is removed after concrete is poured.
FY2024 Problem A [No. 20]
Which of the following statements regarding the characteristics of various types of earth retaining structures is inappropriate?
Freestanding earth retaining structures rely on the rigidity of the retaining wall to provide resistance. This minimizes deformation of the wall and facilitates excavation due to the absence of shoring within the excavation surface.
FY2024 Problem A [No. 21]
Which of the following statements regarding points to note when erecting steel highway bridges is inappropriate?
When moving erection members vertically, a downward slope is desirable to increase the safety of the launching operation.
FY2024 Problem A [No. 22]
Which of the following statements regarding points to note when welding steel highway bridges is inappropriate?
Undercuts are a major cause of stress concentration and can accelerate corrosion, so they should not be present even in joints that are not considered susceptible to fatigue.
FY2024 Problem A [No. 23]
Which of the following statements regarding the tightening of high-strength bolts in steel highway bridges is appropriate?
High-strength bolts should be tightened twice, starting from the central bolt of the connecting plate and working toward the end bolts.
FY2024 Problem A [No. 24]
Which of the following statements regarding reinforcement methods for concrete structures is inappropriate?
Seismic isolation methods can reduce the displacement of components during earthquakes.
FY2024 Problem A [No. 25]
Which of the following statements regarding deterioration of concrete structures due to carbonation and its characteristics is inappropriate?
The carbonation depth of concrete can generally be considered to be proportional to the square of the number of years the structure will be in service after completion.
FY2024 Problem A [No. 26]
Which of the following statements regarding the construction of river levees is appropriate?
When constructing embankments, temporary drainage channels are installed at appropriate intervals to allow rainfall to flow down to prevent slope erosion due to rainfall, and drainage slopes are installed across the levee to prevent rainfall from concentrating.
FY2024 Question A [No. 27]
Which of the following statements regarding foot protection work installed in front of river embankments is inappropriate?
When constructing irregularly shaped concrete blocks, the riverbed must be leveled before they are piled up, making construction difficult when the water depth is deep.
FY2024 Question A [No. 28]
Which of the following statements regarding excavation work on river levees is inappropriate?
When constructing sluice gates and culverts, it is desirable to excavate the existing levee as much as possible to facilitate the construction of embankments, etc. This is also true from the perspective of river management.
FY2024 Question A [No. 29]
Which of the following statements regarding the construction of sabo dams is inappropriate?
In sabo dams, filling is generally performed in the excavated area. If the foundation excavation is bedrock, filling is performed with gravel.
FY2024 Question A [No. 30]
Which of the following statements regarding landslide prevention work is appropriate?
Anchor work is a method of stabilizing a slope by inserting tendons (steel, etc.) into immovable ground and utilizing the tensile strength of the steel anchored in the base. Some methods rely on a clamping effect, while others rely on a detent effect.
2024 Problem A [No. 31]
Which of the following statements regarding steep slope collapse prevention work is inappropriate?
Cast-in-place concrete framework construction is used when a stable slope cannot be achieved on a cut slope, and unreinforced concrete is generally used for the girder structure.
2024 Problem A [No. 32]
Which of the following statements regarding the construction of subgrades for asphalt road pavements is appropriate?
The fill subgrade should be evenly spread after thoroughly understanding the properties of the fill material used, and then thoroughly compacted to avoid loss of strength due to over-compaction.
2024 Problem A [No. 33]
Which of the following statements regarding the construction of the upper subgrade for asphalt road pavements is inappropriate?
When constructing a heated asphalt stabilized subgrade using the thick lift method, if there is nothing to restrain the side edges, it is a good idea to compact it with a large compaction machine such as a vibratory roller.
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