How to control the quality of the construction process of construction works

According to the process construction quality standards.

1. Construction preparation code training control.

It refers to the control of various preparations and factors affecting the quality before the formal construction activities of each project object, which is a prerequisite for ensuring the quality of construction.

2. Construction process control.

It refers to the control of the quality of the actual input production factors and the implementation status and results of the operation technical activities in the construction process, including the self-control behavior of the operator in the process of exerting technical ability and the monitoring behavior from the relevant managers.

3. Completion acceptance control.

It refers to the control of the quality of the final product with independent function and use value completed through the construction process, the unit project or the entire project and related aspects (e.g. quality documentation).

1. What is the specification for the classification of project quality grades?

The quality level of the project should be assessed according to the division project, the unit project, the contract section and the construction project, and the quality level of the branch project is divided into two inspection grades: qualified and unqualified; The quality grades of unit projects, contract sections and construction projects are divided into three grades: excellent, qualified and unqualified.

1. The score value of the sub-project is not less than 75 points, and the score less than 75 points is unqualified; Mechanical and electrical engineering, belonging to the factory processing and manufacturing of bridge metal components not less than 90 points for the qualified, less than 90 points for the unqualified.

The sub-project assessed as unqualified can be re-evaluated for quality after reinforced, reinforced, reworked, and commissioned to meet the design requirements, but the score value of the sub-project shall be calculated according to 90% of its re-scoring value.

2. If all the sub-projects are qualified, the sub-projects will be rated as qualified; If any of the sub-projects is unqualified, the sub-projects are unqualified.

3. If all the projects of each branch are qualified, the project of the unit will be rated as qualified; If the project of any of the divisions is unqualified, the project of the unit is unqualified.

4. The contract section and the unit projects contained in the construction project are all qualified, and the project quality level is qualified; If the project of any unit is unqualified, the contract section and construction project are unqualified. All the divisions included in the unit project are qualified, and the unit project score is greater than or equal to 90 points, and the quality grade is excellent; All the projects included in the division are qualified and the score is greater than or equal to 75 points and less than 90 points, and the quality level is qualified; Otherwise, it is not in line with the hail only qualifications.

The quality of the project is formed in the construction process, not by the final inspection. In order to check the quality of the project after inspection, turn to pre-control, and achieve the purpose of "prevention first", it is necessary to strengthen the quality control of the construction process. First, the concept of process quality control The construction process of the engineering project is composed of a series of interrelated and mutually restrictive processes, and the quality of the process is the foundation, which directly affects the overall quality of the project.

In order to control the quality of the construction process of the project, the quality of the process must be controlled first. The quality of the process includes two aspects, one is the quality of the process activity conditions; the second is the quality of the effect of the process activity; On the one hand, it is necessary to control the quality of the process activity conditions, that is, whether the quality of the inputs in each process (i.e., the quality of people, materials, machinery, methods and environment) meets the requirements; On the other hand, it is necessary to control the quality of the effect of process activities, that is, whether the engineering products completed by the construction of each process meet the relevant quality standards. The control of process quality is the quality control of the process activity conditions and the quality control of the effect of the process activity, so as to achieve the quality control of the entire construction process.

The principle of process quality control is to use mathematical statistical methods to judge whether the quality of the whole process is stable and normal through statistics and analysis of the data of a part of the process (subsample) inspection; If it is unstable and abnormal, countermeasures and measures must be taken in time to improve it, so as to achieve process quality control. The control steps are as follows: 1. Actual measurement:

The necessary testing tools and means are used to carry out quality inspection on the extracted process samples. 2. Analysis: Analyze the data obtained by the test through the histogram method, the arrangement chart method or the management chart method to understand the rules followed by the data.

3. Judgment: According to the results of the analysis of the data distribution law, such as whether the data conforms to the normal distribution curve; whether to go up and down the control line again; whether it is within the limits specified in the tolerance (quality standard); whether it is in a normal state or an abnormal state; Whether it is the quality variation caused by accidental factors, or the quality variation caused by systemic factors, etc., the quality of the whole process is judged, so as to determine whether the process meets the quality standard and implicit standard. If there is an abnormality, you can find the cause and take countermeasures and measures to prevent it, so that the purpose of controlling the quality of the process can be achieved.

The control of construction quality in construction projects includes: the establishment of an excellent quality management organization; Hire high-quality supervision units; the introduction of excellent construction enterprises; Strict quality document review; Actively perform on-site quality inspections with Qizhen.

[Legal basis].Article 52 of the Construction Law.

The quality of construction engineering survey, design and construction must meet the requirements of the relevant national safety standards for construction projects, and the specific management measures shall be specified by the state. When the national standards for the safety of construction projects cannot meet the requirements of ensuring construction safety, they shall be revised in a timely manner.

Article 53.

The state implements a quality system certification system for units engaged in construction activities. Units engaged in construction activities may, according to the principle of voluntary, apply for quality system certification to the first-class product quality supervision and management department or the certification body recognized by the department authorized by the first-class product quality supervision and management department. If it is certified and qualified, the certification body will issue a certificate of quality certification.