Our feature case study this month is the Main Roads WA Bridge Replacement on the York-Merredin Road near Perth.
Materials for this bridge replacement had to comply with the relevant Australian design standards and codes AS2566.1. It needed to achieve a design life in excess of 100 years and resist significant abrasion from stormwater sediment.
ADS N12 HDPE pipe was selected to comply with AS/NZS 2566.1 and carry AS5100.2 road loads with shallow cover. Rapid installation saved the project time and money.
Our clients include:
- Australian Rail Track Corporation (ARTC)
- Ballina Shire Council
- Banyule City Council
- Bendigo Shire Council
- Brisbane City Council
- Canberra Metro
- City of Stirling
- CPB Contractors
- Fulton Hogan
- Georgiou Group
- Macedon Ranges Council
- Main Roads WA – ADS N12 HDPE Pipe
- Main Roads WA – StormTech
- Metro Trains
- Moreland City Council
- NSW Transport RailCorp
- Queensland Government
- QR National
- Sunshine Coast Council
- Sydney Trains
More case studies below:
ADS N-12 HDPE Pipe – Stormwater Drainage Upgrade – WA
- Concrete pipework along Cambridge Street as part of a significant drainage upgrade.
- ADS N-12 HDPE pipe was selected by the contractor and approved by the council as the best product to meet the needs of the project.
- The light weight, long lengths available (4m and 6.1m) and the use of a press-fit integrated bell and spigot fitting reduced installation time over comparable materials such as concrete, reducing installation time and lowered all associated costs including traffic management
- Swift installation required – Cambridge Street is a major thoroughfare and any disruption to traffic would cause significant problems for road users, local residents and businesses.
- Swift project completion required to avoid additional traffic management costs to the council and its contractors.
- Materials used had to comply with the relevant Australian design standards and codes.
- HDPE stormwater pipe as a minimum had to meet AS2566.1.
ADS N-12 HDPE Pipe – Transport Interchange Upgrade – NSW
- NSW government rail initiative to improve reliability and address passenger growth on metropolitan rail network
- Glenfield railway station and bus-rail interchange upgrade
- Construction of two rail flyovers
- Alliance: NSW Transport, MVM Rail, MacMahon, Bouygues Travaux
- Publics and Parsons Brinckerhoff
- Permanent and temporary drainage design
- Heavy rail traffic over pipe]
- Pipe had to have RailCorp approval
- Needed to be a heavy duty pipe, designed for LA350 rail loads and A160 road loads
- Pipe required a design life of at least 100 years
- Long lengths that were easy and quick to install to maximise the pipe metres installed during each session.
- Reduction in site OH&S risks – lighter lifting weights and smaller machinery to move and install pipes achieved this result.
- Low environmental impact through a reduced carbon footprint to complement the clients low carbon environmental footprint.
- AS 2566 is the design standard for the ADS HDPE pipe
- Railcorp standards TMC421 and ESC420
Stormtech – Lined Detention – QLD
- New supermarket – Emerald, North-Eastern Australia
- Heavy seasonal rainfall
- Significant inflows
- Constant traffic over the tank
- Services and light poles intersecting the tank
- Extreme heat conditions in summer months
- 5,000m3 volume in one single tank
- 12 inlets for a peak inflow of over 12m3/s
- Reactive clay site; fully lined tank
- Structural assessment for constant heavy traffic
- Structurally verified for emergency vehicle access (fire trucks)
- The Stormtech tank had to comply with AS5100.1 (bridge design – loads standard), AS4678 (retaining wall standard) and AS2041.1 (culverts standard).
- Compliance with local Queensland standards and independent verification.
- The Australian Road Research Board (ARRB) structurally assessed and approved the product.
- Isolator Rows required to comply with local environmental regulations and meet minimum water quality standards.
StormTech – Raingarden with Stormwater Harvesting – Fawkner VIC
- The Charles Mutton Reserve in Fawkner Victoria is home to two football ovals, a running and athletics circuit, tennis courts and lawn bowls. Moreland City Council identified a need to revitalise the reserve and future proof it against drought.
- Consulting Engineer Spiire was engaged to prepare a stormwater harvesting scheme using water sensitive urban design principles. This is intended as a foundation for a future masterplan for the site.
- Spiire selected Cubic M3 StormTech chambers as a rainwater harvesting solution.
- Minimising the raingarden footprint, visibility of storages and mechanical infrastructure areas.
- The final design included a stormwater diversion system and underground StormTech SC740 storage tank,distribution infrastructure including rising main and pumps, a raingarden to treat sediments and nutrients, storage to provide volume for irrigation cycles and UV disinfection to treat pathogens.
- The expected water harvest of 20ML/year will reduce the sites reliance on potable water by 70% and reduce stormwater runoff to nearby Merri Creek.
StormTech – Raingarden with Stormwater Harvesting – Fitzroy VIC
- Edinburgh Gardens is a 24 hectare park located in North Fitzroy, Melbourne, Victoria.
- A Raingarden project was initiatated to provide a sustainable source of treated stormwater for the parks mature trees and sporting fields, whilst adding character to the existing landscape of the park.
- The City of Yarra selected GHD to design the raingarden and StormTech system.
- The raingarden was designed to remove 16,000 kg of total suspended solids (TSS) each year. A further 160 kg of nutrients, phosphorus and nitrogen to be removed through vegetation growth thereby avoiding release of these pollutants into Melbourne’s waterways.
- 200kL of filtered water to be collected in StormTech underground water storage and used to irrigate existing trees. The raingarden is designed to reduce potable water by 4Ml per annum.
- Source stormwater from the North Fitzroy Main Drain to be diverted to the newly designed terraced raingarden.
- Filtered water to be harvested for irrigation of trees within the park and local precinct.
- Main components of the project: – Diversion pipe with gross pollutant trap – Surcharge pit into 700 sq.m raingarden with StormTech rainwater catchment chambers providing storage structure – Terraced raingarden comprising StormTech chambers, appropriate planting and filter media to treat the stormwater – Overflow pit with underground pipe connected to 200 kL underground storage facility using StormTech chambers.
Download a pdf version of the Edinburgh Gardens Raingarden Stormwater Harvesting case study.