Temperature crack
Thermal expansion and cold contraction are the main reasons for temperature cracks. You may see horizontal cracks in the ring beam at the top of the house (flat roof), and diagonal cracks at the corner of the window and the diagonal of the inner longitudinal wall.
shrinkage crack
Shrinkage cracks are caused by dry and wet changes of materials. They are often distributed on the wall in the form of a network, especially where new and old materials are handed over.
Settlement crack
Uneven settlement of foundation will form various cracks, such as splayed and inverted splayed cracks in the wall. There are also horizontal cracks and even vertical cracks in reinforced concrete beams caused by pulverization and compression of mortar joints.
Deformation crack
Cross cracks, vertical cracks at the joint of vertical and horizontal walls, inclined cracks, etc. Caused by structural deformation of buildings.
structural cracks
Caused by external loads, such as vertical cracks in the wall column under the beam and horizontal cracks in the main reinforcement of the beam slab.
Matters needing attention
Although shrinkage, temperature and a small amount of settlement cracks are usually not dangerous, settlement, deformation and structural cracks need to be paid enough attention, and they may be potential threats to housing safety. If in doubt, it is best to ask professionals to conduct on-site appraisal and analysis.