Dual Chamber Pit

SVC offers a two-part galvanised steel cover compatible with our 1200x600 and 1200x900 Dual Chamber Pits. One side is a forgebar grate to be placed over the inlet chamber; the other side is the same forgebar grating covered by a 3mm solid chequer plate, to be oriented over the outlet chamber. The grate and cover combination is housed within a steel frame with tie bars to support encasement in concrete.

DCP covers are available in either Class B or Class C load ratings as per AS 3996:2019.

Dual Chamber Pits are ideal for smaller commercial sites and residential developments such as townhouse and dual occupancy construction projects, where on-site stormwater detention is necessary due to an increase in hard, non-absorbent surfaces on the site. This ensures that during heavy rain events, stormwater can be released slowly to mitigate flooding and pooling around council drains.

The filtration of sediments and debris also improves the quality of the discharged stormwater, helping to protect downstream waterways.

Yes, SVC's Dual Chamber Pit acts as a self-contained on-site stormwater detention system and can be a component of a broader OSD plan. Its primary function to capture and detain stormwater during heavy rain events, ensuring a controlled stormwater discharge rate that eases the pressure on municipal drainage infrastructure.

An additional benefit of the system is the improvement of water quality due to debris filtration measures incorporated within the unit.

The two chambers inside SVC's Dual Chamber Pit are designed for stormwater detention, enabling a controlled rate of stormwater discharge.

The first chamber (stormwater inlet) captures the stormwater and acts as a sediment trap, allowing coarse pollutants and silt to settle at the base. The water then passes through the trash grate and orifice plate in the central baffle, which provide further filtration, into the second chamber (outlet) where the stormwater is released at a more controlled rate.

It is crucial that all products are lifted using the appropriate lifting tools and techniques to ensure safe transportation and handling. Due to the sheer weight of precast concrete products, any product failure or failure of incorrect lifting equipment poses a high risk to people nearby.

SVC incorporates steel lifting anchors into our precast concrete products, which are compatible with either 1.3T, 2.5T or 5.0 lifting clutches (depending on product weight). Lifting clutches must be connected to the appropriately load-rated lifting chains. All clutches are available to purchase from SVC.

Note: Some SVC pit products may still include lifting holes, which are compatible with 1.0T lifting hooks. Customers must not use these holes to thread chains through for lifting; this is an incorrect technique and is very dangerous as it creates a high chance of pit wall breakage due to the stress from the chain.