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The STORMBRAKE system is one of PROTECTORS most advanced designs, utilizing modern and natural processes of filtration to provide a unique, low impact solution to our environmental needs. The STORMBRAKE system is a system that incorporates FRP retention and flow management systems with efficient stormwater treatment systems. It is a system that does not require any impermeable bodies for installation, nor does it require concrete casting of any kind, simply requiring natural systems such as soil and compacted stone making it a natural filtration imitation. It is a single FRP shell, open bottomed design that easily conjoins to create large arrangements, that stores water as well as simultaneously filtering it. It combines the natural filtration and biofiltration techniques of soil and compressed rocks to remove nutrients, sedimentation and attached particles from the water. This system is able to combine the ability to recharge and decontaminate stormwater runoff ground water whilst simultaneously managing the water flow and retaining water to provide the most effective stormwater treatment and management solution available.

Benefits of STORMBRAKE over other Retention Systems

  • Filters using physical and biofiltration processes whilst in retention
  • Able to be buried in several layers up to a depth of 10m
  • Requires no crane lifting due to lightweight design
  • High Load capabilities
  • Maintains groundwater base flow to streams
  • FRP STORMBRAKE Has a longer effective life span than regular plastic products as well as concrete and pre cast vaults
  • Eliminates thermal loading
  • Uses soil filtration processes and microbial degredation to remove contaminants whilst providing a retention process
  • Provides a low impact development system
  • Replicates pre-development hydrology
  • Simple installation and assembly
  • Multiple layer installations
  • Can be designed for any range of sizes and capacities
  • Passive hydraulic flow – removes requirement for pumping stations!

The system works through water flowing in from the system from either a roadside drain or from the upstream treatment system and filling the STORMBRAKE shells. Pre-treatment devices, specifically gross pollutant traps (PROTECTOR’S ECOPROTECTOR), are recommended to be installed in these systems to ensure not debris or larger pollutants enter the STORMBRAKE system.

The water enters the initial stormbrake chamber, which is considered to be the initial sediment chamber. As the water enters through a 90 degree pipe, the waters flow velocity decreases rapidly and is absorbed through the fabric filter layer underneath the Stormbrake chamber. Due to this speed decrease the sediment will mainly build up in this initial chamber, making maintenance process simpler as well as allowing treated water to disperse throughout the rest of the system without any storage reduction. The water will evenly flow throughout each chamber, as well as seeping through the tightly packed rock and filter fabric layered systems into any below layers allowing filtration. The sedimentation and fine colloidal pollutants are caught throughout the bedrock layer and prevented from flowing throughout the system and out of the filtration. Throughout the soil layers, microorganisms exist to remove nutrients from the system through bio filtration, and this microorganism biodegradation reduces that percentage of nutrients and organic pollutants throughout the system. . The water eventually fills to capacity of the storage system and flows downwards through the soil and out of the outlet piping systems below the STORMBRAKE systems. In events of high-flow, the water will flow throughout the system through adjoining piping connections due to the lower flow rate of the soil. This system is able to combine the ability to recharge and decontaminate stormwater runoff ground water whilst simultaneously managing the water flow and retaining water to provide the most effective stormwater treatment and management solution available.

This system removes pollutants and contaminants using processes such as biofiltration, microbial degradation, adsorption, and attachment techniques as well as hydrocarbon and oil removal to produce a cleaner water result whilst also providing a retention system that filters over time.

Features

  • Design flexibility and multi-layer install– allowing arrangements in any form for any retention requirements along with multiple layered possibility
  • Ease of install and maintenance
  • Ease of combination with other Protector products
  • Arched designed maximises load capability
  • Long Life
  • Combines natural filtration with physical processes
  • Low impact Development system
  • Lightweight system requires no mechanical or hydraulic systems for installation
  • Passive Hydraulic flow
  • Provides stormwater flow management

Stormbrake

Applications

Our StormBrake design is available for application to almost all retention and filtration needs, especially in urban design areas, both commercial and residential in places where the levels of heavy metals, phosphorus and other fine colloidal and attached pollutants are high. If combined with other treatment systems, specifically the tertiary systems that are available from PROTECTOR, this system can be used in almost any application. Hence, we recommend use in the following :

  • Urban Developments
  • Commercial zones
  • Council and commercial building sits
  • Light pollutant industrial zones
  • Residential low impact areas

Due to the simple arrangement of the Stormbrake systems and its ability to operate efficiently at using any number of stormbrake chambers. Hence these systems can be applied to almost all system types. Residential systems are easily able to operate with 1-2 chambers, and due to the run off in these areas require minimal maintenance, whilst these systems can be applied to commercial and industrial areas through use of 20+ chambers, installed in simple row and column designs.

The StormBrake system can come in a wide range of arrangements and depth layers. The simple stack design and ease of instalment ensure that this system will suit your any site demand. The systems easily overlap each other simply stacking due to their interlocking design to allow for as many per row as desired to best suit your systems. Each system can be arranged with manholes wherever required, along with connection piping to best suit the flow rates and water inflow capacity of your site. The systems also have a high strength due to the FRP material and their manufacturing design, so are able to be installed in layers sections, with a GeoTex mesh to allow water flow and achieved higher amounts of filtration and retention.

stormbrake model_range_01
stormbrake model_range_02

The Stormbrake installation process is simple and easy to follow as the system is very lightweight with minimal steps to complete. The most difficult process of the installation is the site excavation, so before the system arrives ensure that the site is prepared as necessary for the Stormbrake system size. Once delivered ensure there is no deficiencies in the system prior to installation.

  1. Once the site is suitably excavated, line the trench walls with the provided Stormbrake filter fabric (not the bottom of the site excavation)
  2. Fill the bottom of the trench with roughly of crushed, washed hard stone to the depths required
  3. Level out the hard stone layer
  4. Place the filter and stabilizing netting underneath the Stormbrake chambers
  5. Place the scour protection mat underneath any stormbrake chamber that shall receive inlet flow
  6. Remove the shipping strips of the chambers at the ends to allow for ease of overlapping and simple installation
  7. Place the chambers, and ensure the closed ends of the start chambers are at least half a metre from facing the trench wall, and arrange the chambers to that first rob of a inner chamber is overlapping the last rib of the chamber before it. Ensure at least half a metre of space remains between the final chamber and excavate wall
  8. Screw the chambers together
  9. Install the pipes (both connecting and manhole access in the tanks in the positions specified
  10. Backfill the hard stone over the chambers to the height reuired. Level the system with a vehicle weighing no more than 500kg. , cover the hard stone with filter fabric and then backfill again with soil and compact

The maintenance procedure is a simple process as the design of the system ensures minimal need for cleaning and rare need for human access into the system through the manholes. The manways that are built in are design to allow for a vacuum trucks suction hose to remove water and sediment present. The design of the system ensures that no hard stone will enter the water ways so maintenance is a simple procedure. The first row of chambers usually has the highest amount of sediment accumulation, and will not reduce the stormwater storage requirements. Due to the 90 degree entry design the waters velocity will rapidly decrease ensuring sediment deposits in the initial chambers. Use of pre-treatment systems such as gross pollutant traps will ensure that no debris will enter the system. Clean out all inlet pre-treatment systems as defined in their maintenance procedures.