What is a Road Gully?

Road gullies are drainage components that can form part of a surface water management system. They are set below the road surface and located adjacent to the kerb side. They can also be used in car parks, other hard standing areas and also form part of a sustainable drainage system (SuDS).

An open grating and frame assembly is constructed within the drainage surface over the gully to intercept surface water runoff that then passes into and through the gully.

Road gullies have an outlet connection above the base of the unit that allows silt and other solid material to separate out from the flow under gravity and collect in the sump below the outlet. This helps to prevent blockages occurring downstream within the pipeline. It also helps remove some pollutants that can attach to the silt particles collected in the sump.

It is important that road gullies are regularly maintained to ensure optimum efficiency.

Why use a Precast Concrete Road Gully?

• They are strong, durable and proven with a long service life.
• They are not prone to flotation in flood and high groundwater situations and can be installed without ballasting during construction.
• Installation of precast concrete road gullies is a simple and straightforward process without the need for complicated, time consuming and costly design detail.
• They are designed to carry the traffic loads transferred directly from the grating and frame assembly.
• They can withstand highway maintenance activities and resurfacing works, subject to appropriate measures.
• They are versatile and can be used with a variety of pipe connections.

contact a BPDA member.