GRC Silt Trap Inlets

square GRC

For pipes up to 360mm O.D.
Approximate weight: 130kg.

A lightweight, easily handled moulded unit in two pieces with simple hinged grating, suitable for most situations where a piped ditch inlet needs protection. Pipe opening is formed where required by carefully knocking through with hammer and punch and opening out to required diameter. Make good with cement mortar or mastic. Particularly suitable for use with plastic drain pipes.

Curved back GRC

For pipes up to 360mm O.D.
Approximate weight: 130kg.

This is a one-piece moulded unit with curved back-wall which can accept pipes at any angle to the ditch line. Ideal unit for the agricultural situation with hinged sloped grating, generous silt capacity and provided with lid to prevent entry of rubbish from above. The pipe opening is formed where required by marking the position of the pipe and then carefully knocking through with hammer and punch and opening out the hole to required diameter. Make good with cement mortar or mastic.

Double entry Silt Trap inlet

For pipes up to 360mm O.D.
Approximate weight: 565kg.

On some sites there is a requirement for the silt trap structure to be in the actual ditch line where it can receive water from both sides. special galvanized steel gratings are located in the aperture formed by the addition of a 300mm deep I.C. knock-out extension section to the basic sectional chamber.

Please specify the number of gratings required when ordering this unit, as it is priced with only one.

  • Made to Order – Leadtime 2-4 week

 

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Product information.

KEY FEATURES.

  • Lightweight, manufactured in Glass Reinforced Concrete (GRC)
  • Faster, cheaper and safer than casting on site.
  • Coloured concrete and powder coated steelwork options available
  • ECO 1 sustainable concrete mix as standard / ECO 1 Ultra option available
  • Optional galvanised steel safety grating

 

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installation guide

expert tips and best practices.

Designed to be incorporated in a culvert where the backfill material around the pipe forms an effective plug. To achieve a good cut-off it is recommended that the pipe opening should be at a height of at least 200mm so that the base of the unit is well grounded in the ditch bottom. The units should be bedded on 100mm of concrete extending at least 600mm in front for the full width of the ditch. The pipe should finish flush or protrude slightly from the wall, and the gap around sealed with cement mortar. Care should be taken to backfill and consolidate suitable soil behind the unit to achieve the best possible seal. Where side walling is to be used, keep the excavations into the batter as narrow as practicable. Be sure to provide support under the walls at each end with suitable padstone or 100mm of concrete. Seal the gaps between the walls and the sides with good quality mastic.

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