DGHV0D6/9090/KHHighway D400 4 flange V gully grate 900mm x 900mm clear opening with 150mm frame depth
Features
SpecificationGeneral information
Standards, classes and groupings
Dimensions
Accessories
NotesThis product range should not to be exposed to Group 5 traffic or above. The use of road plates is recommended where exposure to construction site traffic is likely. The D400 load capability of these Group 3 products also offers the benefit of making them suitable for exposure to Group 4 traffic types. Where 3-flange D400 Gully Grate assemblies are employed, we recommend that they are installed against a kerb, not in an open highway location. Knowledge base
Knowledge Base / Standards and conformity CD 526 hydraulic capacity classifications A guide to the ‘P, Q, R, S & T,’ ratings are classifications listed in Highways England DMRB document CD 526 and how they are calculated to indicate a gully grating’s hydraulic capacity (or effectiveness at evacuating water from a hard standing area. e.g. carriageway). 
Knowledge Base / Standards and conformity Understanding BS EN 124 groups and classes BS EN 124:2015 divides access covers and gully grates into classes by static test load. It also categorises the various places where they may be installed from Group 1 to Group 6. This article will guide you through the groups and classes. 
Knowledge Base / Standards and conformity Sewers for adoption Sewers for Adoption (7th edition) contains guidance for the design and construction of sewers that will be adopted by Sewerage Undertakers in England and Wales in accordance with Section 104 of the Water Industry Act 1991. This helpful guide will take you through what you need to know. 
Knowledge Base / Product and specification guidance ID badging and antenna options (RFID, NFC, IoT) A large number of our Unite and Highway covers provide the facility for a retrofittable badge to be installed in the cover, without the need for welding. In addition, this location can also be used to install communications antennas within the cover, removing the need to adjust the surrounding road surface. This article discusses the potential applications of this technology. 
Knowledge Base / Product and specification guidance On-site coating of ductile cast iron parts Where the loss of barrier coatings has occurred, usually through trafficking and/or light corrosion, a site-applied paint coating may be successfully brush-applied to refresh the surface finish of ductile iron parts. 
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