DGDI

Definition

A Double Grate Storm Drop Inlet (D.G.D.I.) is an access structure with a double grate used in stormwater management systems to remove debris and allow water flow. The adjoining manhole (MH) can be accessed to remove debris that could block water flow.

Purpose

The purpose of a D.G.D.I. is to manage stormwater runoff efficiently by capturing and directing it into the drainage system while preventing debris from entering and clogging the pipes. It ensures proper water flow, reduces the risk of flooding, and facilitates easy maintenance of the drainage system.

Examples of Use

1. Urban Streets: Installing D.G.D.I.s along streets to capture rainwater runoff and prevent flooding during heavy rains.
2. Parking Lots: Using D.G.D.I.s in parking lots to manage stormwater and keep the surface dry and safe for vehicles and pedestrians.
3. Highways: Placing D.G.D.I.s along highway medians and shoulders to direct stormwater into the drainage system, maintaining road safety.

Related Terms

• Stormwater Management: The process of controlling and managing surface runoff to prevent flooding, erosion, and water pollution.
• Catch Basin: A structure designed to capture stormwater and direct it into the drainage system, often equipped with a grate to filter debris.
• Drainage System: A network of pipes, channels, and structures used to convey stormwater away from roads, buildings, and other areas.

Notes

• Regular maintenance of D.G.D.I.s is essential to ensure they remain free of debris and function effectively.
• The design and placement of D.G.D.I.s must consider local rainfall patterns, surface gradients, and potential sources of debris.
• Properly functioning D.G.D.I.s contribute to the overall effectiveness of urban stormwater management systems, reducing the risk of localized flooding.