108 Flinders St, Melbourne


Site area 1400m2

Bulk excavation for basement 18,500m3

Bored retention piles 90 no.

Temporary ground anchors and rock nails 400 no.

Shotcrete wall 2200m2

Hybrid retention scheme with conventional retention piles & anchors; rock nails and shotcrete at lower levels

Challenges included tight site, deep basement, difficult access from busy city street and excavation in hard rock

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