Rodding Eyes Design Considerations

Building Regulations / Standards

International regulations and local building codes must be observed for all sanitary and other drainage installations so it is recommended these are considered as the first step.

As a matter of good practice rodding eyes should be considered for any location where there is a potential blockage and a manhole is not suitable.

FC Frost can supply rodding eyes with either single seals or triple seals as required to prevent foul air from entering a building.

Weight Bearing And Load Rating

As an integral part of the floor it is vital rodding eyes and assemblies withstand all anticipated loads. This catalogue shows the load rating class for each grating, cover or gully assembly based on BS EN 1253, as follows :

Loading L15 (Light Industrial)
Areas with light vehicular traffic such as cycle ways and domestic drives.


Frost rodding eye assemblies can be connected to all pipework in general use.


Floor and Flooring

Floor construction type has a direct influence upon appropriate rodding eye selection and so should be established at the outset.

The depth of the structural slab and available space will influence the selection of the assembly, while selection of an extension may be necessary to bring the rodding eye to finished floor level.

Different kinds of floor finishes, such as concrete, epoxy resin, ceramic tiles or sheet vinyl will influence the type of grating or cover to be selected.

Materials And Appearance

Strength, corrosion resistance and appearance are important considerations when making drainage selections

Finished floor areas
With attractive covers made of satin nickel bronze, polished nickel bronze or stainless steel are Frost rodding eyes contribute to the aesthetic appeal of an area.


Satin Nickel Bronze and Polished Nickel Bronze to BS1400:

Stainless Steel to BS EN 10088-1:2005 Grade 1.4301 (304) or Grade 1.4401 (316) if specified