Temperature crack
Temperature cracks are frequent visitors to walls. Because of the "thermal expansion and cold contraction" of different materials, ring beams and brick masonry are like partners. When the temperature changes and the dance steps are unstable, it is easy to fall at the junction and produce transverse cracks.
Sinking crack
Subsidence crack is the "growing trouble" of foundation. After the house is completed, the foundation will "grow up", but if the growth is uneven, some parts will "rebel" and produce shear and tension. When these forces exceed the bearing capacity of the wall, cracks will appear. This kind of crack is inclined, especially in the lower part of the building, sometimes like the word "eight" and sometimes like the word "eight"
structural cracks
Structural crack is the most serious "disease", which indicates that the bearing capacity of the wall is insufficient or there is a big problem. It may be that the design is wrong, the construction quality is not good, the pipeline destroys the integrity of the wall, or changes the use of the house. These cracks are often caused by "internal diseases" and need timely treatment!