The necessary excavation depth for a subsurface drainage system is a critical factor influencing its effectiveness. This measurement, typically expressed in inches or feet, dictates the system’s capacity to intercept and redirect groundwater away from a structure or area.
Proper depth ensures the drain’s ability to effectively manage subsurface water, preventing issues such as waterlogged soil, hydrostatic pressure against foundations, and potential structural damage. Historically, empirical observation guided drain placement, but modern engineering practices rely on calculations considering soil type, water table level, and anticipated water volume.