WHAT Types of Cracks May Occur?
Cast-in-place concrete basements provide durable, high quality extra living space. At times when proper construction practices are not used, undesirable cracks occur, such as:
- Temperature and drying shrinkage cracks. With few exceptions, newly placed concrete has the largest volume that it will ever have. This shrinkage tendency is increased by drying and/or a drop in temperature and can lead to random cracking if steps are not taken to control the location of the cracks by providing control joints.
- Settlement cracks. These occur from nonuniform support of footings or occasionally expansive soils.
- Other structural cracks. In basements these cracks generally occur during backfilling, particularly when heavy equipment gets too close to the walls.