EN124: PRODUCT SELECTION
EN
124 divides manhole cover and drainage gratings
into six classes as follows: A15, B125, C250,
D400, E600, F900. The classification denotes
the test load expressed in kN. For example
Class D400 denotes a product that complies
with test load of 400kN. The appropriate
class of manhole top or gully top to be used
depends on the place of installation within
the carriageway.
The various places of installation within
the carriageway have been divided into groups
as listed below. A guide as to which class
of manhole top or gully top should be used
is listed in brackets beside each group.
A typical highway cross section is also illustrated
below showing the location of some of the
installation groups.
It should be noted that the selection of
the appropriate class is the responsibility
of the designer. Where there is any doubt
the higher class should be selected. Please
call our sales team at Cavanagh if you need
any assistance on product selection.
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Group 1 (min class A15)
Areas which can only be used by pedestrians
and pedal cycles.
Group 2 (min class B125)
Footways, pedestrian areas and comparable
areas, car parks or car parking decks.
Group 3 (min class C250)
For gully tops installed in the area of kerbside
channels of roads which when measured from
the kerb edge extend a maximum of 0.5m into
the carriageway and a maximum of 0.2m into
the footway.
Group 4 (min class D400)
Carriageways of roads (including pedestrian
streets), hard shoulders, and parking areas
for all types of road vehicles.
Group 5 (min class E600)
Areas imposing high wheel loads e.g. docks,
aircraft pavements.
Group 6 (min class F900)
Areas imposing particularly high wheel loads
e.g. aircraft pavements.
EN124 states that’s its requirements are meeting the minimum performance specification. The selection of the appropriate performance is the responsibility of the designer/specifier. |
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