Florida Home Inspector Practice Test

What is the proper installation depth for perimeter foundation drainage tile?

1. At ground level

2. Above the footing

3. Below the basement's floor level

4. At the surface level

The correct answer is: Below the basement's floor level

The proper installation depth for perimeter foundation drainage tile is indeed below the basement's floor level. This placement allows the drainage system to effectively capture and redirect groundwater away from the foundation, preventing water accumulation and potential flooding in the basement area. By positioning the drainage tile below the basement floor, it can intercept water that may otherwise seep into the space, ensuring a drier basement environment and protecting structural integrity. In general practice, drainage tiles are installed in a gravel bed, which facilitates effective water flow and filtration while further enhancing the system's ability to manage hydrostatic pressure against the foundation wall. This depth is critical because if the drainage tile were installed at ground level or above the footing, it would not be able to effectively manage groundwater, which can lead to moisture problems in the foundation and basement. Installing the tile at surface level would entirely negate its purpose, allowing water to flow towards the foundation rather than away from it.