BS EN 124-4:2015

What is BS EN 124-4 - Gully tops and manhole tops made of steel-reinforced concrete about?  

BS EN 124-4 discusses about gully tops and manhole tops made of steel-reinforced concrete. 

BS EN 124-4 is applicable to precast gully tops and manhole tops made of steel-reinforced concrete with a clear opening up to and including 1 000 mm for covering gullies, manholes, and inspection chambers for installation within areas subjected to pedestrian and/or vehicular traffic. 

BS EN 124-4 is applicable to manhole tops and gully tops for use in: 

• Areas which can only be used by pedestrians and pedal cyclists (at least class A 15) 
• Pedestrian areas and comparable areas, car parks, or car parking decks (at least class B 125) 
• The area of kerbside channels of roads which, when measured from the kerb edge, extends a maximum of 0,5 m into the carriageway and a maximum of 0,2 m into the pedestrian area (at least class C 250)  
• Carriageways of roads (including pedestrian streets), hard shoulders, and parking areas, for all types of road vehicles (at least class D 400) 
•  Areas imposing high wheel loads, e.g., docks, aircraft pavements (at least class E 600) 
• Areas imposing particularly high wheel loads, e.g., aircraft pavements (Group 6, class F 900) 

Note1: BS EN 124-4 is not applicable in isolation but only in combination with EN 124-1 and gives guidance for combinations of covers/gratings made of steel-reinforced concrete with frames according to EN 124-2, EN 124-3, EN 124-5 and EN 124-6. 

Note2: BS EN 124-4 is not applicable to:  

• Concave gratings for class D 400 installed in carriageways of roads or hard shoulders and concave gratings for classes F 900 and E 600  
• Gratings/covers as part of prefabricated drainage channels according to EN 1433  
• Floor and roof gullies in buildings which are specified in EN 1253 (all parts) and  
• Surface boxes 

Who is BS EN 124-4 - Gully tops and manhole tops made of steel-reinforced concrete for? 

BS EN 124-4 on gully tops and manhole tops made of steel-reinforced concrete is useful for: 

• Manufacturers of gully tops and manhole tops 
• Installers 
• Safety regulatory bodies 
• Maintenance personnel 

Why should you use BS EN 124-4 - Gully tops and manhole tops made of steel-reinforced concrete?  

Gully tops and manhole tops develop leaks as a result of heavy traffic and from freezing and thawing, causing sanitary overflow problems and expensive repairs. In repairing these manholes, crews face the challenges of sealing or otherwise repairing the chimney. 

BS EN 124-4 helps to install inspection chambers that are necessary to maintain the sewer system (e.g., cleaning, flushing the system). BS EN 124-4 is useful for carrying out surveys related to underground utilities, maintenance of equipment, and for operatives to enter the system itself. 

BS EN 124-4 is used to enable the concerned authorities to access the storm sewers and sanitary in a hassle-free way and helps them get into the depth of any problem or fix some blockages below.