Which of the following is NOT a common problem with walks and driveways?

Control joints are not considered a common problem with walks and driveways; rather, they are intentional features incorporated into concrete installations. These joints are designed to manage the natural expansion and contraction of the concrete due to temperature changes and moisture variations. By allowing for movement, control joints help prevent cracking, which is a frequent issue in concrete surfaces.

In contrast, cracks in the surface, potholes, and pooling water are all typical problems associated with walkways and driveways. Cracks can occur due to various factors, including settling, temperature fluctuations, and heavy loads. Potholes often result from wear and tear over time, particularly in asphalt surfaces, where moisture infiltration can undermine the material. Pooling water can indicate drainage issues, which not only affect functionality but can also lead to further deterioration of the surface. Understanding the role of control joints emphasizes their importance in the construction process, as they serve to mitigate the common problems that can arise in concrete surfaces.