22 first-level construction engineer management gold test site quality problems and quality accident handling, notes from the first construction school master, long press to like + forward + comment for continuous updates, click on my avatar in the Wendang version and send me a private message: 2022
โ test site 1 : Construction quality accident handling procedures:
๏ After a construction quality accident occurs, the relevant personnel at the accident site should immediately report to the person in charge of the engineering construction unit; after receiving the report, the person in charge of the engineering construction unit should report to the county level or above where the accident occurred within 1 hour. Reports from the housing and urban-rural development departments of the People's Government and relevant departments.
ร โ Accident investigation - โก Accident cause analysis - โข Formulate accident handling plan - โฃ Accident handling - โค Authentication and acceptance of accident handling - โฅ Submit handling report.
โ โ โ Test point 2: Basic methods for handling construction quality accidents:
1. Repair treatment: such as concrete cracks, โค0.2mm surface sealing method; >0.3mm caulking sealing method, when deeper, grouting repair method is adopted;
2. Reinforcement treatment: such as: enlarging cross-section reinforcement method, etc.;
3. Rework treatment: such as: concrete does not solidify and harden 5 days after pouring, and the strength is less than 30% of the specified strength after 28 days.
4. Restricted use: such as: structural unloading, load reduction;
5. No processing: (no impact, post-compensation, forensic identification, original accounting)
6. Scrap processing
๏ฌ Mathematical statistical methods: hierarchical method, causal analysis diagram method , Pareto chart method, histogram method.
โ โ โ Test point 1: Cause and effect analysis diagram method, also known as quality characteristics factor analysis method. Notes: (Required test)
โ Use one picture for 1 quality characteristic or a quality problem (1 to 1)
โก Usually QC group activities are used to brainstorm and jointly analyze
โข If necessary, relevant personnel outside the group can be invited to participate. Broadly listen to opinions
โฃ Fully express your opinions when analyzing, go deep into each level, and eliminate all possible reasons
โค On the basis of full analysis, each participant will use voting or other methods to select 1 to 5 of the most common ones that the majority of the people have reached consensus on. main reason.
โ Test point 2: Pareto chart method: 0~80% - Type A questions - key management
80%~90% - Type B questions - secondary key management
90%~100% - Type C questions - general Management
โ โ โ Test point 3: Histogram method (required)
๏ Histogram method: The distribution shape and distribution interval width of the histogram are determined by the average value of the quality characteristic statistical data and the standard deviation of .
ร The normal histogram is normal distribution , with high in the middle and low on both sides, symmetrical. A normal histogram reflects that the quality of the production process is in a normal and stable state. (See textbook illustration)
