The difference between subsidence and expansion joints

Sedimentation joints should not only penetrate the upper structure, but also through the foundation itself. The settlement slab should consider the influence of non - uniform settlement inclination and ground height difference on both sides of the seam. Seismic joints, expansion joints in the ground below may not be sewn, joints should be strengthened. But the settlement suture on both sides of the wall must be separated.

Expansion joints, also known as temperature joints. The practice is as follows: the length of the building along the direction of a certain distance from the gap, the building from the roof, walls, floors and other components above the ground all open, the base due to changes in temperature less affected, do not have to disconnect. The width of the expansion joints is generally 20-30mm, the joints should be filled with insulation materials, spacing in the structural specifications are clearly defined.