Cracks in buildings, types and causes of cracks

In this section we will discuss cracks in general and their causes

Types of cracks:

1. Horizontal cracks: This occurs as a result of the mud swelling due to water, ie due to rainfall in the runner wall.

Second, vertical cracks occur as a result of the ground falling due to the weight of the building (settlement) or due to the movement of the wall, which is affected by many factors

Causes of cracks:

 A. During construction:-

1. Movement of the mold and board: After the concrete is no longer liquid, any movement will cause cracks.

 2- Concrete settlement: Due to the settlement of heavy parts of concrete (grease) and the formation of bleeding and drying of the concrete before the inside or not settling the concrete on the glass, which causes emptiness.

3. Consolidation shrinkage: caused by chemical reactions and size changes caused by water vapor on the surface of the concrete . . . .

4. Effective vibration around the newly concreted area.

5. Cracks due to premature removal of the mold.

b) Cracks and damage after completion of the building:-

1. Concrete continues to shrink over time due to gradual removal of water, evaporation and formation of voids.

2- The presence of temperature difference inside and outside the residential unit that should be covered with insulation materials.

3- Melting and freezing several times due to the weather that causes the concrete to explode.

4. Foundation leakage The cause of most cracks is this type, which depends on the type of soil under the building.

5- Due to incomplete details of the designer\\\\\\'s map, supervisor\\\\\\'s error or poor building materials.

 6. Rusting