It is said that without rules, nothing can be achieved. Therefore, national norms are essential in building earthquake resistance. In order to regulate the production and use of seismic supports, the state has issued relevant policies for many times.

Law of the peoples Republic of China on earthquake prevention and disaster reduction

Article 35 stipulates that "major construction projects and construction projects that may have serious secondary disasters should be evaluated for seismic safety in accordance with the relevant provisions of the State Council, and be fortified against earthquakes in accordance with the seismic fortification requirements determined in the approved technical safety evaluation report." "Construction projects in densely populated places such as hospitals, schools, large shopping malls and residential quarters should be designed and constructed in accordance with the seismic fortification requirements higher than local housing buildings, and effective measures should be taken to enhance the seismic fortification capacity.

Code for seismic design of building Electromechanical Engineering

GB50981-2014

It was issued on October 9, 2014, and officially promulgated and implemented since August 1, 2015. The following mandatory provisions have been made: 1.0.4 seismic design must be carried out for building Electromechanical Engineering in areas with seismic fortification intensity of 6 and above. 5.1.4 anti seismic supports and hangers shall be used for smoke control duct, emergency ventilation duct and related equipment.

General technical conditions for seismic supports and hangers of building electromechanical equipment

CJ/T476-2015

It was issued on March 4, 2015 and officially promulgated and implemented on September 1, 2015. It clearly stipulates the technical specifications of building electromechanical seismic support. The code for seismic design of non structural members (JGJ 339-2015) has been officially promulgated and implemented since October 1, 2015. The code has made very clear provisions on the seismic design of building electromechanical equipment.

Experience of foreign advanced countries (take the United States as an example)

The history of electromechanical seismic support design in the United States can be traced back to 1947. Nfpa13 stipulates the seismic support design method of building automatic sprinkler fire protection system, that is to say, the United States has begun the seismic design requirements in the field of fire protection. Then in the 1960s and 1970s, the United States began to define the building electromechanical seismic support system, which is applied to the seismic requirements of water, heating, wind, power and other electromechanical equipment.

In 2004, FEMA and ASCE jointly issued "installation of seismic supports for air ducts and water pipes" (the specification belongs to national legal provisions).

Although our countrys construction electromechanical earthquake resistance started late, as long as we are determined to regulate, Chinese buildings will become more and more reliable and safe in the future.