The Commercial Laundry Facility, located in Karratha’s Gap Ridge Industrial Estate is comprised of a 2,000m² warehouse and a small attached office. 

The main warehouse is framed out with a special truss design to allow minimal movement as sensitive conveyor systems are mounted from the roof and require less than 10mm of deflection over each span to operate correctly. 

Project features include: 

  • 2,000m² warehouse
  • Truss portal frames spanning 40 meters with a central column 
  • Warehouse used systematically by the laundry
  • Attached Office
  • Cyclonic design

Project Value: 
$10 million 
Year Completed: 
Building Metrics: 
Total Area 2,000m2 

Gavin Constructions 
Robert Bird Group Services: 
Structural Engineering 
Civil Engineering 

Key technical challenges

  • The primary tower structure consists of a composite slab and beam structure. Due to the long beam spans and thin slab, extensive analysis for footfall vibration was required to ensure the structure achieved code requirements and client expectations.
  • Working with the existing structure and developing design solutions that strengthened rather than demolished.
  • Extensive co-ordination with the mechanical engineer to develop a strategy that minimised beam penetrations and beam notches.
  • Differential shortening analysis with consideration of mega truss, steel structure, concrete structure and existing structural elements

Environmental performance

  • 5 Star Greenstar
  • 5 Star NABERs Energy and 4 Star NABERs Water ratings.

Design of Heavy Vehicle Workshop and Slab 

Robert Bird Group provided structural design for the main heavy vehicle workshop at the Century Mine at Lawn Hill. The design featured a gantry crane and slab strengthening for tracked vehicles. 

Excavator Wash Down & Awning Structure 

The Robert Bird Group team provided the structural concept and final design for an awning structure located at the Port Site Facility in Karumba. The awning was designed to prevent zinc or lead product from being discharged offsite during the wash down of excavators used to manage product within the Stockpile Building. 

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