Award-winning Demolition Experts
We’ve won a significant number of awards, both in Australia and internationally. Our awards recognise our innovative methodologies and solutions that solve high risk challenges and deliver best in class solutions.
Northam Hospital Demolition
Client: Windsor Knight Pty Ltd
Location: Northam, WA
Duration: February 2016 – August 2016
Project Description:
The old Northam Hospital was a seven-level reinforced concrete structure, including two basement levels, constructed using a column and slab system. The complex consisted of a main block with an adjoining wing.
The buildings ranged in height from approximately 18 to 21 metres, comprising up to seven storeys with service core overruns. All structures were in-situ reinforced concrete column and slab construction, incorporating oversized floor reinforcement and 240 mm-thick slabs designed to meet earthquake protection requirements.
External walls were brick-clad to full height, with a 1.5 m deep × 0.5 m reinforced concrete ring beam extending around the full perimeter of all high-rise elements, providing additional structural integrity.
Scope of Works:
Mainilne was engaged by Windsor Knight to demolish and remove all buildings, structures and improvements, including a general clean-up of the site in preparation for new construction of a proposed shopping complex.
The works included:
- Disconnect services and piping above and below ground, including, but not limited to, water, reticulation, electrical, communications, sewerage, storm-water and gas
- Minor excavation earthworks and site clearance of vegetation
- Removal of building structural frame, ground slabs, footings, basement and pavements
- Pump out contents of and remove septic tanks, soak-wells and leach drains
- Septic tanks, sewer connections, soak-wells, leach drains, sanitary plumbing
- Recycling of all concrete for reuse onsite
Equipment deployed:
- 110-tonne excavator
- 40-tonne excavator
- 30-tonne excavator
- 22-tonne excavator
- 740 dump truck
- Bobcat and mini-breaker (minor works)
- Small Tipper, service and general use truck
- Long-reach demolition arm
- Water Truck
- 14 tonne vibe drum roller
- D10 Tracked Dozer
- 988 / 950 loader
- Loaders
- Crushing and screening equipment
- Various excavator attachments including magnet, grapple, breaker and buckets
Project Highlights:
- Successfully demolished structure with a 2,600 m² footprint without the use of explosives.
- Removed and disposed of contaminants prior to demolition, including asbestos, PCBs, and other hazardous materials.
- Recycled all remaining building elements following contaminant removal.
- All concrete and brick crushed to Main Roads specification <19mm for reuse onsite. Approximately 30,000 tonnes.