BS EN 124 · BS 497

Manhole covers
and gratings.

Cast and ductile iron covers and gratings to BS EN 124 and BS 497, in round, square and special shapes. ESTN supplies the heavy-duty end of the range — D400 and E600 — for carriageway, dock and industrial loading.

Request a quotation

Load classes

The EN 124 grades.

EN 124 divides covers into six classes by bearing capacity. ESTN supplies D400 and E600. Lighter classes and F900 are shown for reference only.

Group	Class	Load bearing kN	Load bearing tonnes	Typical position	Supplied
1	A15	15	1.5	Pedestrian areas	—
2	B125	125	12.5	Footways, non-motorised lanes	—
3	C250	250	25	Kerbside channels, verges	—
4	D400	400	40	Carriageways, hard shoulders	Yes
5	E600	600	60	Docks, aircraft pavements, industrial yards	Yes
6	F900	900	90	Special heavy-load areas	—

Selection

Matching class to road position.

EN 124 assigns class by where the cover sits in the cross-section. Side walks and non-motorised lanes take the lighter groups; the running carriageway and the 0.2–0.5 m kerb zone take D400; docks, aircraft pavements and heavy industrial yards take E600.

Formats

Shapes and frames.

Round cover, square frame

The standard configuration for most chamber types.

Square cover

Square cover in a square frame, for gully and inspection chambers.

Gratings

Slotted gratings for surface water collection, same load classes.

Special shapes

Non-standard openings made to drawing.

Specification

What we need from you.

Clear opening, load class, frame depth, cover material (cast or ductile iron), and whether hinged, locking or sealed. Dimensional schedules are issued against the specific opening rather than a fixed catalogue size.

Need covers for a carriageway or yard?

Tell us the clear opening, grade and frame type.