Wall cracks: three common situations

Wall cracks are one of the common problems in houses. This paper will introduce three common situations of wall cracks to help you better understand the causes and characteristics of wall cracks.

Temperature crack

Temperature crack is one of the most common wall cracks. Due to the thermal expansion and contraction of materials, building structures are deformed due to temperature changes, resulting in temperature cracks. This kind of crack usually appears at the junction of different materials, such as the horizontal crack at the junction of ring beam and brick masonry.

Cracks caused by uneven settlement of foundation

Cracks caused by uneven settlement of foundation are more troublesome. If the settlement is uneven, there will be relative displacement between the large settlement part and the small settlement part, and the wall will produce additional internal force, which will exceed the tensile and shear strength of the wall itself and produce cracks. These cracks are generally inclined cracks, and the cracks strike depression. It will be more obvious in the lower part of the building, developing from bottom to top, showing the word "eight" and inverted the word "eight", horizontal and vertical.

structural cracks

Structural cracks are caused by the upper load, indicating that the bearing capacity of the wall is insufficient or there is a big problem. Structural cracks may be caused by structural design errors, poor masonry construction quality, wall bearing capacity damage and other reasons. This kind of crack is usually caused by burying various pipelines, changing the use of the house, increasing the use load or increasing vibration after the house is completed, which damages the wall and causes the wall to crack.