Technical Centre Frequently asked questions Ductile Iron FAQs Read our frequently asked questions about our ductile iron products Steel FAQs Read our frequently asked questions about our steel products Geogrid FAQs Read our frequently asked questions about our geogrid products Geotextile FAQs Read our frequently asked questions about our geotextile products UniPak FAQs Read our frequently asked questions about our Unipak product Manhole covers and gully grates Are all D400 manhole covers appropriate for highway use? Manhole covers are safety critical, make sure you're using the correct covers Armadillo compatibility chart See which products the Armadillo Manhole cover protector and Gully Grate protector are compatible with. Armadillo installation guides Read our installation guides for Armadillo manhole cover shell or Armadillo gully grate shells. Bespoke Armadillo Armadillo protector shells can be made bespoke to your requirements, including unique colours, chequer patterns and your companies branding. British Standard Groups and Classes Access covers and gully grates divided into a number of classes by static test load BS EN 124:2015 intended use classification Read the intended use of the BS EN 124:2015 classification BSI Kitemark Our high-performance access covers and gully grates are also independently tested and certified by the British Standards Institute CD 534 Guidance Guidance on the latest CD 534 standards Guide to installation - Gully Chute Connector & 500 x 350mm Gully Grating Assembly Read our installation guide for a Gully Chute Connector with a 500mm x 350mm Gully Grating Assembly Guide to installation - H2Go Combined Kerb & Drainage and Gully Chute Connector Assembly Read our installation guide for H2Go Combines Kerb & Drainage and Gully Chute Connector Assembly Hercules Cover Removal Guide Read our removal guide for Hercules manhole covers How manhole covers and gratings are measured Read our guide on how manhole covers and gratings are measured Manhole Cover Frame Installation Do’s and Don'ts Read our do's and don'ts for when installing a manhole cover frame Manhole cover installation guide with Clicklift Read our installation guide for manhole covers using Clicklift New Highways England Skid Resistance Requirements Read our guidance on the new Highways England skid resistance requirements Surface Oxidation on Iron Castings Most access cover and grating products manufactured from grey or ductile cast irons are coated in paint (often bitumen based) prior to dispatch, in order to provide an aesthetic finish Ventilation Conformity Notice Chamber Top assembly ventilation requirements vary according to the application. Therefore, it is unusual to always need the minimum ventilation requirements of BS EN 124 What are CD 526 hydraulic capacity classifications? Hydraulic capacity classifications are listed in Highways England DMRB document CD 526 and are calculated to indicate a gully grating’s hydraulic capacity (or effectiveness at evacuating water from a hard standing area. e.g. carriageway). Accessories ClickLift Do's and Don'ts Read our do's and don'ts for when installing ClickLift ClickLift methods of installation Read how using ClickLift can save you time and money on installation UniPak preparation, mixing and application instructions Read our guide for how to prepare, mix and apply UniPak Steel Choosing the right steel cover Use our handy guide to helping you choose the right steel cover. Guidance on Steel Access Covers and Loadings Read our guide to load categorisations and the correct choice of product Installation guide for recessed covers in paving Read our installation guide for recessed covers in paving Geosynthetics Comparing Biaxial Grids of Different Forms Read our comparison guide for Biaxial Grids of different forms E’GRID transportation, storage and installation guidelines Read our guide for transportation, storage and installation of E'GRID GCL 5000 installation guide Read our installation guide for GCL 5000 Key Geogrid Attributes Read the key attributes of our E'GRID products MultiTrack and FasTrack installation guidelines Read our installation guides for MultiTrack and FasTrack ProtectaWeb Slope Stabilisation Installation Procedure Read our installation guide for ProtectaWeb slope stabilisation ProtectaWeb Tree Root Protection Installation Procedure Read our installation guide for ProtectaWeb Tree Root Protection Reinstatement of Geogrids If our Geogrids are damaged during the installation process or afterwards, damaged areas may be repaired by laying another roll of the same Geogrid over the damaged area Where to use Geotextiles Read our guide for where to use Geotextiles
