We provide civil and environmental engineering services for individual industrial, commercial and large scale medium density lots, as well as complete civil engineering design of civil infrastructure.

We are proactive in managing risk, identifying potential issues early, and then working closely with our clients to ensure that the project goals are achieved.

The extensive, first-hand experience of the GCA’s professional team ensures clients can be confident knowing every detail will be attended to, and any planning or engineering issues that may arise will be dealt with promptly and efficiently.

Civil Engineering

Our core civil and environmental engineering capabilities include:

Civil Engineering Design

  • Bulk earthworks and site regrading
  • Road horizontal & vertical geometry
  • Sight distance analysis
  • Major intersection design
  • Driveway access design
  • Car park design

Stormwater Management

  • Stormwater management plans
  • Surface water hydrology
  • Pit and pipe hydraulics and design
  • Open channel design
  • On site detention
  • WSUD (Water Sensitive Urban Design)
  • Stormwater quality modelling (“MUSIC”)
  • Water quality treatment structure design
  • Water balance analysis

Erosion Control

  • Soil and water management plans
  • Stormwater maintenance plans
  • Scour protection design
  • Sediment and erosion control plans

Flood Management

  • Flood inundation studies
  • Flood risk management studies
  • Flood risk management plans

Subdivision Concepts

  • Subdivision layouts
  • Subdivision landscape concepts


Get in touch today.  We’re looking forward to talking with you about your engineering needs.