Sir Frederick Osborne School

Description:

• 4,000 tonnes of material was excavated from the site.
• A 27,000 litre rainwater harvesting tank was installed.
• Half a kilometre of below ground drainage was installed.
• A 600m concrete slab (with 52 tonnes of steel reinforcement) was poured.
• To improve drainage, Mackin to install a permeable paving solution for the car park and playground areas.

Challenges:

• Maintaining site safety at all times.
• The rainwater harvesting tank was installed after the building was constructed. The challenge was to avoid undermining the foundations. A temporary ground support solution was developed which involved using a ‘vibrational drive before you dig’ technique.
• Working adjacent to a ‘live’ school meant delivery times were restricted during ‘school run’ hours.

Outcome:

The project was delivered on time and Mackin continues to work with Ashe on similar projects.