# The armour

What the city bolted onto the hills when the rocks came down, 288 engineered rockfall defences in the council’s asset register, 288 of them still named "temporary" works from the quake years. 12 are rated poor or worse on the file’s own scale.

## The record

- 288 defences, 288 "temporary"
- anchor: 131 (installed 2010–2012), 3 rated poor
- cable: 105 (installed 2010–2012), 3 rated poor
- mesh: 36 (installed 2010–2012)
- barrier: 15 (installed 2010–2011), 6 rated poor
- bund: 1 (installed 2011–2011)

## Where the armour stands, by suburb

- Heathcote Valley: 96 defences · 96 still "temporary" · 1 rated poor
- Hillsborough: 88 defences · 88 still "temporary" · 6 rated poor
- Sumner: 47 defences · 47 still "temporary"
- Lyttelton: 45 defences · 45 still "temporary" · 4 rated poor
- Cashmere: 4 defences · 4 still "temporary" · 1 rated poor
- Huntsbury: 3 defences · 3 still "temporary"
- Mount Pleasant: 3 defences · 3 still "temporary"
- Clifton: 1 defence · 1 still "temporary"
- Redcliffs: 1 defence · 1 still "temporary"

_Each defence files under the suburb that holds its pin: the count, the kinds, how many are still named temporary and how many the file rates poor. A record is the asset file’s word, not a current engineering assessment._

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Christchurch City Council open data, the Structure service’s rockfall-protection layers. A record is the asset file’s word on what was installed and its last condition rating, not a current engineering assessment. The rocks the survey mapped: https://www.chch.live/boulders. A point’s own record: https://www.chch.live/before. The files: https://www.chch.live/defences.json · https://www.chch.live/defences.geojson · by suburb: https://www.chch.live/suburb-defences.json