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AGL – Lake Guy Bogong

  • Client: AGL
  • Location: Lake Guy, Bogong VIC
  • Height / Scale: Mobile hung scaffold system along dam wall

First Scaff was engaged by AGL to design and construct a custom mobile hung scaffold system for works at Lake Guy Bogong. The scaffold was engineered to allow the client to safely move the platform along the face of the dam wall to install expansion plates across multiple sections, without dismantling and rebuilding between each location.

The system was counterweighted to ensure full stability during movement and was designed in accordance with First Scaff’s CM3-certified OH&S Management Plan and relevant Australian Standards, including AS/NZS 1576 and AS/NZS 4576.

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Technical Scope

Scaffold Type

Counterweighted mobile hung scaffold

Height

Multi-level dam wall access

Equipment Used

Crane, EWP, rope lifts

Compliance

CM3-certified OH&S Management Plan; AS/NZS 1576, AS/NZS 4576, AS/NZS 4994 and AS 1657:2018 standards

Application

Suspended and relocatable platform

Site Type

Hydro-electric dam in alpine region

Key Challenges / Constraints

Limited access path (250 m footpath), weather conditions, over-water installation

Environmental Control

Operated within water catchment zone; debris containment in place

Project Environment

  • Limited access: All scaffold gear had to be walked 250 metres along a narrow footpath to reach the build site at the base of the dam.
  • Unique conditions: The structure was erected on a dam wall, requiring precise engineering to safely suspend the scaffold out and over the water.
  • Custom design: The scaffold was purpose-built to be mobile, enabling the client to reposition the platform for each section of works without complete disassembly.
  • Environmental factors: Work was completed within a water catchment zone, under cold conditions with snow on surrounding roads, requiring chains for vehicle access and strict environmental controls throughout the project.

Project Outcome

The scaffold was completed safely and performed as designed, providing a stable, mobile work platform that met AGL’s access and environmental requirements. The ability to reposition the scaffold along the dam wall significantly reduced downtime and manual handling, allowing installation works to be completed efficiently and in compliance with all site safety protocols.

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