What is the minimum diameter for subsoil storm drains?

The minimum diameter for subsoil storm drains is established at 4 inches to effectively handle the flow of water and prevent clogging. This size is designed to accommodate the necessary volume of drainage from the soil while ensuring that the drains can handle typical water movement without becoming overwhelmed. A diameter of 4 inches strikes a balance between being sufficiently large to allow for adequate drainage and small enough to be manageable and cost-effective in installation and maintenance.

Larger diameters, such as 6 inches or 8 inches, may be appropriate for certain applications or specific site conditions, but they are not necessary for the standard minimum requirement for subsoil storm drains. Smaller options, such as 2 inches, are insufficient for proper drainage, as they may lead to frequent blockages and inadequate water control. Thus, 4 inches is the recognized standard that meets both functionality and practicality in various environmental conditions.