Final answer:
Gravel is the preferred material for use around drain tiles in foundation construction due to its ability to facilitate proper drainage and act as a filter, unlike topsoil, peat moss, or sand.
Step-by-step explanation:
The best type of material to use around drain tiles when constructing a foundation is gravel. Gravel allows water to flow easily around the drain tile, facilitating proper drainage away from the foundation. Topsoil, peat moss, and sand are not suitable because they can retain moisture and may cause blockage or damage to the drainage system over time. Gravel acts as a filter, preventing silt and fine particles from entering the drain tile while still allowing water to pass through.
Gravel is typically used around drain tiles when building a foundation. It allows water to flow freely and helps in drainage, preventing water from accumulating around the foundation. Sand can also be used in certain situations but is less commonly preferred due to its tendency to compact over time and potentially impede drainage. Topsoil and peat moss are not suitable for this purpose as they retain moisture and can cause water to collect around the foundation, leading to potential issues like erosion or water damage.