On the housing construction in the quality control

[Abstract] The Construction of housing construction through the analysis of frequently asked questions, discussed the housing construction quality control features, factors and control methods.

[Keywords] housing construction quality control

A housing construction quality control features
1.1 characteristics of housing construction projects:
1.1.1 one. The construction of housing construction project is reversible, therefore, the construction of housing construction projects can only be a success, not failure.

1.1.2 fixity and mobility of production, the Housing construction projects in specified locations to be fixed on the land, after all the construction projects, locally transferred from the construction unit to use unit.

1.1.3 a single piece of Each housing construction projects must be combined and the surrounding environment due to the environment, the foundation bearing capacity changes, only a single design and production.

1.1.4 bulky nature of the Housing Construction Project is a large number of engineering materials, products and equipment, consisting of physical, bulky, houses account for a large external space, it can only open-air production, the quality of climate and environment greater impact.

1.1.5 Appointment of Housing engineered products like industrial products in general, as can be, Mr. postpartum transactions, it can only be based on predetermined conditions in the field of production, that is, first post-trade production.

1.2 quality of housing construction features:
1.2.1 are affected by many factors. The quality of housing construction works by a variety of factors, therefore, the project construction quality control must consider these factors.

1.2.2 the quality and volatile due to housing construction single-piece production and mobility, general industrial products do not have a fixed production lines, standardized production process, improve the detection technology, complete sets of production equipment and stable production environment, so the quality of the project is easy to produce volatile and volatile.

1.2.3 is the quality of concealment, the Housing construction projects in the construction process, due to the transfer process more and more intermediate products, projects and more hidden, so the quality there is covert.

1.2.4 final inspection is limited to large. The project final inspection (completed) acceptance of some limitations, therefore, the project construction quality control should be based on prevention, preventive measures.

2 housing construction quality control factors
The main factors affecting the quality of construction was (Man), material (Material), machinery (Machine), method (Method) and Environment (Environment) five areas, referred to 4M1E. The construction process, these five aspects strict control is ensure that the key to the quality of construction work.

3 housing construction quality control methods
3.1 "PDCA" cycle
Construction quality control is to pay attention to grasp the quality of work. "PDCA" cycle, also known as "Deming ring," according to "PDCA" cycle theory, namely, planning, implementation, inspection and processing manner to quality control.

3.2 Total Quality Management (TQM)
TQM (Total Quality Management, TQM), the construction enterprises in order to guarantee and improve the quality of the project and the use of a complete system of quality management activities, means and methods.

3.3 statistical methods of quality control
3.3.1 is a statistical survey method. Statistics Act, also known as the survey questionnaire analysis, quality control activities, the use of survey data was collected, easy and flexible, easy to order, practical and effective.

3.3.2 is a hierarchical method. Hierarchical classification known method, the results of stratified layers of the data has highlighted the differences between them, differences in the data layer is reduced.

3.3.3 is Pareto. Diagram of a main quality problems or to find the main factors affecting the quality of a method.

Figure 3.3.4 is a causal analysis method. Causal analysis diagram method is the use of causal analysis diagram to systematically analyzed the causes of a quality problem with the relationship between an effective tool.

3.3.5 is a control chart. Control chart is used to analyze and determine whether the process is stable and with control limits of an effective graphical tool.

3.3.6 is a scatter plot method. Scatter the analysis of correlation between two variables graphics, with the point that distribution patterns, according to the distribution patterns to determine the relationship between the two.

PDCA cycle and TQM in control theory based on quality control methods, emphasizing the construction business administration, production management, cost management, technology management and statistical methods closely together, establish a set of comprehensive quality system for production process control, which applies to the completion of construction, economy, reliability, safety engineering.

4 Conclusion
The 21st century is the century of quality, due to China's current building is basically in the construction business, the oversupply situation, the face of fierce market competition and increasingly demanding customers, the quality will be the occupation of the market's most powerful weapon. In the process of global economic integration, the construction companies are faced with a unified international markets, regional and national protection of the enterprise will gradually weaken, its products and services must accept a unified international markets judge the project construction management, to stand in the survival and development perspective to understand the significance of the project quality, adherence to the "quality win" business strategy, scientific management, construction standards, in order to encourage enterprises to expand and seek greater development. Links to free download http://www.hi138.com