Sydney Civil Works Project
Place:Box Hill, New South Wales
Total area: 10200 m2
Year: 2024
About the Project
JMT Civil were engaged for the construction of a 7-lot subdivision located in Box Hill, New South Wales.
The subdivision aimed to transform a previously undeveloped site into a residential neighbourhood with fully serviced amenities. This project involved comprehensive civil works, including site remediation, the installation of drainage systems, underground utilities, and the construction of pavement for the new road infrastructure.
Project Objectives
- To develop a 7-lot residential subdivision to meet local housing demand.
- To remediate the site for safe and sustainable development.
- To install necessary civil infrastructure, including drainage, utilities, and pavements.
- To comply with all local council and environmental regulations.
Site Remediation
Prior to commencing any subdivision works, the site underwent a detailed remediation process. The site had a history of industrial use, which required soil testing and environmental assessments to ensure its suitability for residential development.
Key remediation activities included:
- Contamination Assessment: Soil samples were taken at multiple locations across the site to identify contaminants. These were tested for potential hazardous materials such as heavy metals and petroleum hydrocarbons.
- Remediation Strategy: Based on the test results, a remediation plan was developed, which included the removal of contaminated soil and replacement with clean fill to ensure the site met the necessary environmental standards.
- Validation: After remediation, independent environmental consultants conducted a site validation to confirm the site was safe for construction, with all contaminants removed or treated to acceptable levels.
Subdivision Civil Works
Once the site was cleared and remediated, work began on the civil infrastructure required for the subdivision.
1. Drainage Installation
A critical component of the civil works was the installation of an efficient drainage system to manage stormwater runoff, reduce flooding risk, and prevent erosion. The drainage works were designed in accordance with local council guidelines and Australian standards.
- Stormwater Management Plan: A comprehensive stormwater management plan was prepared, incorporating both on-site detention and stormwater quality control measures.
- Pipework and Pits: The installation included a network of underground stormwater pipes and grated pits designed to capture and divert surface water to a nearby detention basin.
- Infiltration Systems: Where feasible, infiltration systems were incorporated to allow water to percolate back into the ground, improving groundwater recharge and reducing pressure on the stormwater system.
3. Pavement Construction
The subdivision required the construction of a new internal road network to provide access to each lot. The design and construction of the pavement were carried out in accordance with local council specifications.
- Road Design: The new roads were designed to cater to residential traffic volumes and ensure adequate turning radii and access for emergency vehicles. Design considerations included road alignment, slope, and safe pedestrian pathways.
2. Underground Utilities Installation
To ensure the subdivision is equipped with essential services, the installation of underground utilities was undertaken as part of the civil works. These utilities include:
- Water Supply: A new water main was connected to the local supply network, ensuring reliable access to potable water for each lot.
- Sewerage System: A sewer network was installed to service the subdivision, connecting each lot to the existing municipal system.
- Electricity and Telecommunications: Underground conduits were laid for electrical and telecommunications cables, ensuring reliable power and communication services for future residents.
The careful installation of these utilities was essential to avoid future disruptions and ensure long-term sustainability.
- Pavement Layers: The road construction involved the laying of a base course, subbase, and final asphalt layer. Materials were selected to ensure durability, minimize maintenance needs, and provide a smooth driving surface.
- Kerbs and Guttering: Concrete kerbs and gutters were installed along the roadways to manage surface water runoff and provide clear delineation of the road from adjacent properties.
Challenges and Solutions
Throughout the project, several challenges were encountered, and various solutions were implemented to address them:
- Geotechnical Issues: Due to the site’s previous use, some areas exhibited poor soil conditions. Geotechnical engineers designed suitable foundation solutions and ground improvement techniques, including soil stabilization and deep foundations, to ensure the stability of both the road network and residential structures.
- Environmental Sensitivity: The project team ensured that all works were carried out in compliance with environmental protection guidelines, including managing sediment and erosion during construction.
- Coordination with Utilities Providers: Close coordination with utility providers was required to minimize disruptions and ensure that all services were provided in time for the subdivision’s completion.
Outcome and Impact
The civil works for the 7-lot subdivision in Box Hill, NSW, were completed on schedule and within budget. The site was successfully remediated, and all necessary infrastructure was installed to create a sustainable and attractive development.
The subdivision now provides much-needed residential lots in the growing Box Hill area, contributing to local housing availability. The careful planning and execution of civil works have ensured that the infrastructure is robust and capable of meeting the future needs of residents while minimizing environmental impact.
Conclusion
The successful delivery of the civil works for this 7-lot subdivision required JMT Civil’s close attention to detail in the areas of site remediation, drainage, underground utilities, and road construction. Through effective project management, careful design, and collaboration with various stakeholders, the development was realized as a high-quality residential area that meets community needs and environmental standards.
