In the dry hanging design of stone, due to the lack of relevant technical information and information, without reference to the real advanced construction methods and pendant products can not be designed to adopt, it is still used in the needle pin-type construction method has been eliminated by the market or only in the drawings Some parts indicate the implementation of stone dry hanging, and then allow the construction party to arrange its own operation method, resulting in no drawings based on random treatment in the construction, supervision and acceptance over and over, security risks have arisen. Today, there is a national standard atlas approved by the Ministry of Construction, “National Civil Construction Engineering Design and Technical Measures” and a “General Atlas of Architectural Construction” jointly edited by the North China and Northwestern Architectural Design and Standardization Office (88J-1, except for the decoration. Based on the two standard atlases, it can completely solve the passive situation that the design has no reference, and it can be of great significance for the promotion and application of advanced dry hanging methods.

Unreasonable selection of materials The selection of stone dry-hanging engineering materials shall be strictly implemented in accordance with the drawings and in accordance with the requirements of the "Stone Curtain Wall"; (Metallic and Stone Curtain Walls); "> Metal and Stone Curtain Wall Engineering Specifications" (JGJ133-2001), but individually In order to reduce costs, the construction unit chooses inferior materials to shoddy, especially the dry hangings and dry hanging adhesives, and replaces the national standard 304 stainless steel or 7075 aluminum alloy pendants with the “stainless iron” welding head dry hangings that have been demagnetized. The tensile strength of these three kinds of pendants are: GB 304 stainless steel 530?|620MPA, 7075 aluminum full gold 540?|560MPA, and "stainless iron" is only 160?|180MPA, its strength is still less than stainless steel 1/3.It is not appropriate to use it as a dry pendant, who is responsible if there is a problem? Furthermore, the clearance between the board and the board is usually 6mm, 8mm or 10mm, but during the installation process, due to the dry hanging The thickness is usually 4?|5mm. In this way, the gap between the plate and the plate is adjusted by using nuts, gaskets, etc., resulting in cumulative bearing, so that the hard contact will occur under the condition of vibration and temperature variation. What terrible security consequences have been used for a long time in the construction process, it is also a wrong practice to use strong plastics instead of stone dry glue, and Hercules is a glue between stone and stone, and it is used in stone and Bonding between metals is unscientific, and its bond strength is weaker than that of stone dry-hanging glue. Furthermore, it does not meet the regulatory requirements of the industry standard “Epoxy adhesive for dry-hanging stone curtain walls” (JC887-2001).

The construction management is not standardized The good or bad of the construction site management directly reflects the level of the project manager's quality. Management confusion will inevitably lead to cutting corners, multi-use, material loss, false public and private phenomena, will directly affect the project progress, quality, Virtually buried a lot of security risks.

As project managers, they should fully recognize their own responsibilities, and should be six qualities: First, the professional knowledge and practical experience; Second, work enthusiasm and sense of responsibility, sense of mission; Third, mature, objective judgment The fourth is the organization and management capabilities; the fifth is consistent words and deeds and set an example; six is ​​energetic, hard-working.

Project management runs through all aspects of the entire project, and slight flaws will have different degrees of impact. Standardized management is to implement all rules and regulations, strictly perform duties and ensure project quality, and will only aim for a qualified project manager. .

Supervision team's technology is weak For the stone curtain wall project, many supervisors nowadays can be said to be laymen, and are experts in infrastructure or main structure. The supervision of the curtain wall is particularly important, but it is still a weak link. Due to the lack of systematic acceptance standards for stone dry hanging projects in the country, the supervision work is difficult. Therefore, the training of the technical and related skills of the supervision team is also urgently needed. Focus on work.

The industry standard "Technical Specifications for Metal and Stone Curtain Wall Engineering" (JGJ133-2001) and the National Standards Approved and Implemented by the Ministry of Construction atlas "National Civil Construction Engineering Design Technical Measures" are the latest and most authoritative standards and specifications. National and local authorities and industry associations pay attention to and attach importance to the implementation and implementation of standards. Standards and regulations are laws, and they should be implemented in a serious and faithful manner. Therefore, it is hoped that design, construction, decoration, and supervision will all take responsibility in the design, selection, installation, and acceptance of stone curtain walls, and will be strictly monitored. Practice according to law, work according to regulations, and guide our professionalism and professional ethics with the purpose of “Serving the people wholeheartedly”. To prevent problems, don't just pursue safety that is cheap and neglected. For the beautification of the city and the people's safety, the strict implementation of the constitution gives every citizen the due obligations, resolutely put an end to all security risks, and build a more beautiful, healthy and safe urban home for the society and the people.

Source: China Building Materials Network. Com