
Manhole / Access covers and frames are available in a range of sizes and materials, there usage varies from domestic driveways , car parks, carriageways and commercial heavy load applications. The end use of the drain will determine which type is suitable for a specific application and the different grades that comply to BS EN124: 1994 are shown below.
| GROUP |
TEST LOAD |
APPLICATION |
| 1 |
A15kN |
Pedestrian areas, domestic driveways |
| 2 |
B125kN |
Driveways and pedestrian areas, with no heavy vehicular traffic. |
| 3 |
C250kN |
Car Parks, service stations, forecourts, . industrial areas with slow moving traffic. (Up to 500mm from kerb & 200mm in to verge path). |
| 4 |
D400kN |
Carriage Ways, public highway use. |
| Additional Loadings |
E600kN |
For use in locations of high wheel loads e.g. heavy loading bay. |
| |
F900kN |
Areas of extremely high loads e.g. airports and dock yards. |

The range of materials available for covers and frames includes polypropylene, galvanised steel, stainless steel, ductile iron, cast iron and composite materials.
The different style of access covers include solid top, hinged, grate, mesh, recessed, sealed and locked to name a few.
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