Stormwater Pits (RKO)

The modular Rocla RKO™ (rectangular knockout) pit system provides fast construction of junction pits, grated pits and kerb inlet pits. Preformed knockout sections on all four sides provide easy orientation and pipe connection, as well as allowing larger pipe inlets compared with other pit systems.

Rocla® precast concrete square pits complement the extensive Rocla® range of pipeline products. The pits are available in 4 standard sizes (450mm square, 600mm square, 600mmx900mm and 900mm square).

Riser sections are available in increments of 150, 300 and 600mm for quick construction to correct pit height.

Many cover and surround combinations are available including steel grates, concrete covers and inlets. These are manufactured to suit local authority requirements and are available to finish the installation. Components are manufactured to suit their required ultimate load applications (either Class A, B, C or D) in accordance with AS3996.


  • Stormwater drainage pit systems
  • All typical stormwater pit applications
  • Pipe connection and larger pipe inlets
  • Allotment drainage structures
  • Carpark drainage structures
  • Junction pits (grated inlets and under kerb & channel)