by The guiding reading is to continuously strengthen the quality improvement of housing projects in Beijing, promote the construction of the project quality responsibility system with the construction unit as the primary responsibility, strengthen the implementation of the main responsibility for the project quality of the construction unit, strengthen the due performance of the supervision enterprise, and cooperate with the district housing and Urban Rural Development Commission according to the annual work plan, A special inspection was conducted on the engineering quality of residential projects under construction in Beijing.
On January 10, the Beijing Municipal Commission of housing and urban rural development reported the special inspection.
The inspection found that there are many problems in the joint design of some construction plans: for example, there are some joints between the precast balcony hanging boards and the main wall hanging boards in some assembly project design plans.
As the sealant has adverse factors such as service life (generally 15-25 years) and easy aging, it is easy to produce quality hidden dangers such as water leakage, ventilation and light transmission after delivery, and it is difficult to find and repair.
Beijing Municipal Commission of housing and urban rural development reported five projects with serious quality problems.
Among them, one project is the e-003-02 plot project in Hanzhuang village, Jinhaihu Township, Pinggu District, which is constructed by Beijing tengtai Yiyuan Real Estate Co., Ltd., constructed by China Construction Technology Co., Ltd.
and supervised by Beijing Jianxing Hongtu Engineering Supervision Co., Ltd.
the main problems are: damage and cracking of some precast outer wall outer leaf plates; The external corner gap of some precast exterior wall panels is too large; The slab bottom joint concrete between some precast floors is not dense; The secondary structure interlocking block core column is not filled with concrete; The waterproof height of some underground exterior wall coiled materials is insufficient.
The problems notified have been required to be handled by the territorial supervision organization in accordance with the law and regulations.
Beijing Municipal Commission of housing and urban rural development stressed that in the next step, we should strengthen exposure and punishment! The details are as follows: 1.
Overall, this inspection inspected 32 residential projects in 16 districts of the city, including 6 construction projects in the main structure stage and 26 construction projects in the decoration and electromechanical installation stage.
The spot check focused on the project entity quality, the quality behavior of the main participants and the performance of the supervision unit, and entrusted a third-party testing organization to test the concrete strength The air tightness of doors and windows was sampled.
A total of 1006 problems were found in the inspection, including 600 project entity quality problems, 158 main quality behavior problems and 248 supervision unit performance problems.
A total of 17 copies of the handover form for special inspection on residential quality and safety were issued on site, and 91 serious problems were handed over to the district housing and Urban Rural Development Commission for investigation and treatment.
All problems require the district housing and Urban Rural Development Commission to urge the participating units to rectify within a time limit in accordance with the law and regulations.
2、 Overall, with the implementation of the primary responsibility for quality and safety of the construction unit, resident supervision of ready mixed concrete, household acceptance, project quality evaluation and project quality image traceability management and other management documents, the project quality awareness and management level of each participating unit have been significantly enhanced, and the quality of the inspected residential project is generally under control.
The good practices of each district are as follows: (1) Chaoyang District plays a model demonstration and leading role.
Chaoyang District Housing and Urban Rural Development Commission earnestly carried out the “quality month” activity, organized on-site observation meetings on project quality, comprehensively displayed good experiences and good practices, and put forward the work goal of “whether a project is good or not, each project is good; one cannot be less for high-quality development” in the area of housing and urban rural development in the whole region.
（2） Changping District extends and innovates the supervision mode.
Changping District Housing and Urban Rural Development Commission comprehensively analyzed the weak links of the whole chain supervision of the construction project, continuously extended and innovated the project quality supervision methods in terms of cost payment, owner inspection, model room control, key link supervision, house purchase contract review, and implemented quality improvement measures.
（3） Shijingshan District and Huairou District implemented differentiated supervision.
The housing and Urban Rural Development Commission of Shijingshan District and Huairou District studied and formulated the inspection scheme according to the actual situation of the district in advance with the joint inspection team, relied on the joint inspection mechanism, gave full play to the technical advantages of experts, and helped to improve the quality of housing in the district.
The joint inspection team of Shijingshan District Housing and Urban Rural Development Commission found dozens of quality problems in differentiated supervision projects and implemented the seriousness of differentiated supervision; Huairou District Housing and Urban Rural Development Commission strictly controls the delivery of residential buildings for projects to be completed, and can only be delivered for use after all problems are rectified.
（4） Fengtai District and Daxing District have solidly promoted the implementation of the primary responsibility of the construction unit.
For the Caoqiao collective rental housing project in Fengtai District, the construction unit Caoqiao industry (Beijing Vanke) cooperates with the construction unit Tianjin ruinai construction.
The construction unit and the construction unit take eliminating common quality problems as the main starting point to improve the residential quality.
Improve the waterproof design standard, pay attention to the model guide, and strictly implement the technical measures for roof waterproof construction; For Tuanhe resettlement housing project in Daxing District, the construction unit Beijing Pioneer Huaye cooperated closely with the supervision unit Jianyan Kaibo to jointly explore the joint practice of precast building structure design, and adhere to the acceptance of backfill quality by drilling.
3、 The inspection found that there were many problems in four aspects: interior decoration and electromechanical installation works, basement waterproof and backfill works, supervision performance and construction drawing node design scheme.
（1） The problems of decoration and mechanical and electrical installation projects were highlighted.
The inspection found that there were 309 quality problems in decoration and mechanical and electrical installation projects, accounting for 30% of the total problems.
There are some problems in the decoration project, such as indoor ground cracking, insufficient anchor points between light partition board and main structure, non dense and transparent window foam sealing, non use of safety glass for sliding door, insufficient anchor depth of embedded bolts of stone curtain wall and so on; There are some problems in electromechanical installation, such as the comprehensive pipeline layout and laying of basement pipelines are not done, the supports and hangers of water supply and drainage pipelines are not set as required, the setting of fire water pipes and sprinkler heads do not meet the requirements, the fire pipes are not painted with fire retardant coating, the cross-section size of roof lightning protection lead is insufficient, and there is no water floor drain in toilet..
