Expansion joint

Expansion joints are required to disconnect all above-ground parts of the building, such as walls, floor slabs, and roofs. The foundation part, being less affected by temperature changes, does not need to be disconnected.

Expansion joint placement:

The spacing of expansion joints should be determined based on the structure of different materials.

② Expansion joint construction:

Expansion joints separate all building components above the foundation and leave an appropriate gap between the two parts, typically 20~40 millimeters wide.

Expansion joint structural treatment

The walls, floor slabs, and roof structures of brick-and-concrete construction can be designed with either single or double wall load-bearing schemes. They should be positioned at points where the plan shape varies to facilitate concealed treatment.

The frame structure typically employs a cantilever beam scheme, but can also utilize a double-beam double-column method, which is more complex to construct.