Anti-seismic bracket manufacturer requirements for seismic identification

Update:10 Aug 2019

First, the seismic requirements for brick structures 1. […]

First, the seismic requirements for brick structures
1. The brick lintel has no cracking and deformation.
2. The wall is not empty, no skew and soda.
3. The local dimensions of each part meet the limit requirements of the current national seismic assessment standards for buildings.
4. There are no wall cracks caused by uneven settlement of the foundation and other defects that obviously affect the quality of the wall.
5. There is no crack at the junction of the load-bearing wall and the vertical and horizontal wall, and the bite is good, and there is no hole to be formed without any excavation to form a hole that obviously weakens the seismic resistance of the original structure.
Second, the seismic requirements of the steel structure
1. The stressed members, the rods and their connections and joints are free of rust.
2. The support length of the stressed member meets the non-seismic design requirements.
3. The intersection of the center line between the column support slanting rod and the center line of the column is not located at the upper and lower column sections of the slab and the column section above the foundation.
4. The force component and the rod (including the support) are free from shortage, no obvious bending, no crack, and no holes or gaps formed by any cutting.
5. The anchor bolt has no damage, rust and no looseness of the nut; for the anchor bolt which is mainly sheared, the bolt has no thread buckle at the cover surface of the bracket. The foundation concrete has no cracking and no corrosion conditions.
Third, the seismic requirements of reinforced concrete structures
1. The connector is free of rust.
2. The length of the prefabricated force members is in accordance with the non-seismic design requirements.
3. There is no shortage of force members and rods, no obvious deformation, and no damage caused by cutting or hole punching.
4. The concrete members and members of the members are free from cracks, corrosion, burning, falling off, no exposed bars, and no cracks exceeding the design specification limits.
5. When there is an infill wall or inter-column support, there is no sudden increase in the eccentricity of the center of mass of the structural unit and the horizontal stiffness in the height direction, and there is no increase in the line stiffness of the column due to the semi-high rigidity wall or Form a short column.