20 12 municipal real questions and answers of first-class builders

1, which does not belong to the pavement use index: deformation P5.

2. The compaction principle of soil subgrade does not include: fast first and then slow P 16.

3. Only when the concrete pavement reaches 40% of the designed bending strength can pedestrians pass. P36

4. It is the gravity retaining wall that only relies on the self-weight of the wall to resist the earth pressure. P4 1

5. When hanging the beam, when the included angle between the hanging rope and the component is less than 60, a hanger or a brace should be set. P69

6. Box culvert jacking Correct answer: During the jacking process, the elevation of observation stakes set on the bottom plate of box culvert should be observed regularly every day. P80-8 1, and the other three errors are within the scope of these two pages.

7. In the weak aquifer, the ground structures are not allowed to be demolished, and the shield method P90 should be preferred in areas with difficult construction conditions.

8. Deformation characteristics of shoring structure of unsupported shallow foundation pit: the maximum deformation of the top entering the foundation pit is P 10 1.

9. The main task of linear control of shield machine is to control shield posture P 126.

10, shotcrete should use early strength concrete P 140.

1 1, with a depth of 5m and a diameter of 2m and a small amount of accumulated water, the open caisson adopts manual excavation and drainage open caisson P 150.

13. Water tank that needs leak test (not found)

14 and GCL are mainly used for sealing and seepage prevention P203.

15, shrubs can be planted beside the fence. P2 15

16, and the distance between the trees and the edge of the pavement shall not be less than 1mP2 15.

17, DBH is 200mm, and it is Pinus tabulaeformis P22 1 that must be excavated with soil balls.

18, cement concrete pavement can be used as the main road of the garden. P223

19, the most commonly used bidding strategy is unbalanced quotation method. P243

20, concrete segment can not have internal and external through cracks and cracks with a width greater than 0.2 mm .. P330.

Second, multiple choice questions

1. Reinforcement methods before starting shaft of shield machine: grouting method, high-pressure jet mixing method and freezing method P 1 16.

2. Structural characteristics of the pool: thin-walled structure, high reinforcement ratio, high impermeability and good integrity (P 148).

3. Compensators belonging to natural compensation: Z type and L type P 186.

4. The gas pipeline crosses the river bottom: P 195.

5. Gas pipeline accessories: P200

6. Places requiring internal and external anticorrosion and cathodic protection: P200, P 169.

7. Structure level of landfill: leachate collection and backflow system, anti-seepage system and foundation layer P206.

8. Detection methods of subgrade compactness: circular knife method, sand filling method and irrigation method P3 1 1.

9. The quality grades of spray derusting are: Sa 1, Sa2 and Sa3P337.

10, belonging to moderate risk: P344.

Case (1)

background information

Cantilever pouring bridge .....

Question:

1. Does the examination and approval of construction organization design conform to the regulations? reason

2. Before the hanging basket enters the next stage of construction, necessary procedures shall be added.

3. According to the unqualified items in hanging basket construction inspection, the correct methods are given.

4. What records should the project department add?

Answer:

1. does not match. The project construction organization design should be approved by the project manager, and must be approved by the person in charge of the enterprise (construction unit) and the supervision engineer, and implemented after being stamped with the official seal; If there is any change, there should be a change approval procedure.

(It is said in the book that steel binding, formwork erection, concrete pouring and prestressing are all carried out on it. After the construction of this section is completed, the hanging basket will move forward symmetrically for one section, and the next beam section will be constructed in turn until the cantilever beam section is poured. Before the hanging basket enters the next section, the necessary process is to apply prestress and anchorage.

3. It is inappropriate to dismantle protective facilities for the convenience of construction; The correct way: when the existing protective facilities must be dismantled during construction, a plan should be made to dismantle and set up temporary protection, and the construction should be resumed after completion;

4. The construction site should save information:

(1) A copy of the safety production license of the construction enterprise, the assessment certificate of safety management personnel such as the full-time safety officer of the project department, and the construction license of the construction project;

(two) the construction site safety supervision registration form, underground pipelines and buildings (structures) data transfer form, safety protection and civilized construction measures cost statistics, safety capital investment records;

(3) Project profile table, summary table for identification of major hazard sources of the project, expert demonstration table for dangerous branch projects, summary table for dangerous branch projects, control measures for major hazard sources of the project, and emergency plan for production safety accidents;

(4) Safety technical disclosure summary table, special operation personnel registration form, operation personnel safety education record form and construction site checklist;

(5) Illegal handling records and other related information.

Case (2)

background information

The assembled sedimentation tank in sewage treatment plant was changed into cast-in-place sedimentation tank. .....

Question:

1. Construction sequence?

2. Wet areas?

3. How to determine the comprehensive unit price of pool bottom, pool wall and prestressed reinforcement?

4. How to determine the construction cost of sedimentation tank?

5. According to the principle of accident treatment, what should be done before continuing tensioning?

answer

1.2-4- 1-3-5

2. The height of the inner wall of the bottom area is 4.5m in lateral area.

3. Implement the original unit price at the bottom of the pool; Ikebukuro A Company proposed that it should be implemented with the consent of the construction unit; Prestressed tendons shall be implemented with reference.

4. According to the original method, increase the compensation.

5. According to the principle of "four don't let go" in handling safety accidents: deal with the person responsible for the accident; Implement rectification measures; Safety education for operators and related personnel.

Case (3)

background information

Three 14MW gas-fired hot water boilers were installed in the new heat source project of a residential district. . .

question

1.What handover procedures should Company B and Company A go through?

2. Please point out which of the contractors should go through the relevant formalities in the supervision institution and write down the name of the formalities.

3. What other contents should burner factory data include?

4. Please list the main contents of the qualification examination of nondestructive testing units and their personnel in Company B..

Answer:

1. Before pipeline and equipment installation, the civil construction unit, process installation unit and supervision unit shall check the number and position of embedded lifting points, the position of equipment foundation, surface quality, geometric size, elevation and concrete quality, the position, size and elevation of reserved holes, and handle the written submission formalities. (Answer provided by the user: Company B and Company A go through the handover procedures: ① The subcontract signed by both parties shall be filed by the constructor. (2) bidding documents and design drawings, (3) construction organization design, (4) construction scheme, (5) technical disclosure, (6) quality and safety, and (7) other technical data. )

2. The owner shall go through the application procedures for the use of special equipment with the supervision agency (local technical supervision bureau), register and put on record, and accept regular inspection and audit.

3. In addition to the manual, the factory data of the burner should also include: ① product quality certificate ② performance test report ③ special equipment manufacturing license (copy) ④ type test report ⑤ maintenance theory.

⑥ Packing list ⑥ Other information.

4. List the NDT units and their personnel that should be audited by Company B: ① Business license; ② Enterprise code certificate; ③ Qualification certificate of NDT unit; ④ Proof of equipment and technical conditions; (5) business experience and inspection performance; ⑤ technology.

Personnel level (certificate B) ⑦ Qualification certificate of NDT personnel ⑧ Professional training records, etc.

Case 4: Earth pressure balance pipe jacking construction.

1. Does the working well need to prepare a special plan?

A: Yes. The excavation depth of the working well is more than 6 meters, which belongs to deep foundation pit engineering. According to relevant regulations, it is necessary to prepare special plans and organize expert certification.

2. Is the change approval procedure proper?

Answer: It must be reported to the technical director of the construction unit for review, signature and seal, and then reported to the project supervision engineer and the project director of the construction unit for approval before implementation. When making changes, the corresponding procedures should also be implemented.

3. What procedures do I need to go through to occupy the green space in the nearby community?

A: First, it is approved by the administrative department of urban greening, then it is agreed by the residential property company and the neighborhood Committee, and then an announcement is posted. Residents in residential areas should be visited to show humility, and the safety and life of residents in residential areas should not be affected when stored. After storage, the green space should be restored to its original state.

4. Preparation before10 # jacking to 8#?

Answer: Be familiar with drawings, work out feasible construction organization design and construction scheme, make technical disclosure to relevant construction personnel, and accurately measure and set out.

5.9# Can I claim compensation for demolition?

You can claim compensation. The reason belongs to the owner. You can claim for the delayed construction period, the idle expenses of jacking equipment, the idle expenses of construction personnel, the expenses of enterprise management personnel and the expenses affecting the green space of the community.

Case 5: Planting garden main roads and greening trees, from April to 65438+February, when the moisture content of subgrade is too high, add lime to roll it; Cancel subgrade vibration compaction; Graded macadam is used at the grass-roots level, with the maximum particle size of 50mm, and asphalt emulsion is sealed and maintained for 3 days; The surface construction temperature was 3℃ ... I don't remember. The tree has dozens of ginkgo and XX trees at a time, supported by three bamboo poles with a diameter of 50mm, and the construction colleagues spread grass blocks. The following year, local subsidence and cracks appeared on the pavement.

1, are those measures inappropriate?

A: There are five faults. (1) Lime soil cannot be used in winter. After soil replacement, backfill with backfill soil that meets the design requirements. (2) It is not advisable to cancel vibration, and tire roller and steel wheel roller can be used instead. (3) The maximum particle size of graded macadam is 37.5mm, and (4) the curing period is 7- 14 days. (5) Protective measures should be taken for low-temperature construction, such as windproof facilities, heating the mixture, adding anti-freezing early strength agent, etc.

What's wrong with planting green trees?

A: Three mistakes. (1) Trees cannot be constructed in winter. Protective measures must be taken during construction, such as wrapping insulation blanket and insulation cotton in trunk. (2) Bamboo poles are elastic and cannot be used for support. Use hard tree poles or steel pipes. (3) You can't spread grass blocks in winter. If it is to be laid, insulation measures should be taken.

3. Causes of subsidence and cracks.

A: The five points in question 1 are all reasons.

4. Supplementary main road construction in winter.

Answer: To prevent wind, heat the mixture (cement can't be heated), and the anti-freezing early strength agent added to the mixture must not contain ice. The lower bearing layer is dry, clean, free of ice and snow, covered in time, and constructed quickly. The curing period is 28 days.