KEY PROJECT: CIVIL

Pole position: Site stabilisation in Wellington

Pole position
Pole position

110 metre retaining wall

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Pole position
Pole position

110 metre retaining wall

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Engineers drawing

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Pole position
Pole position

110 metre retaining wall

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Lattey Group have recently completed work on a 42 lot residential subdivision at Whitby, Porirua. 

This elevated site at the end of Adventure Drive has views to Porirua Harbour. Due to the steep terrain, significant site stabilisation and levelling was required for the subdivision to go ahead.

Contracted by CGW Ltd, Lattey Group constructed a 110 metre long retaining wall on the eastern and southern boundaries. This involved drilling a series of post holes 1.2 metres apart, to various depths, and at a precise angle - through the soil and into the rock below. 

Lattey Group installed over 90 timber and steel posts - angled at 6 degrees into the holes - and set them with 80 cubic metres of concrete. The longest posts were 11.5 metres long, and sunk 7.5 metres below ground - giving a retained height of 4 metres.

 

Learn more about our civil capability here.