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Stone Farm House, Wanaka

BMC was asked to provide an earthquake retrofit design for this historic homestead originally constructed in 1910.

The house structure consists of slate roofing tiles supported on timber roof framing, supported on exterior plaster coated stone walls up to 500mm thick as well as internal timber frame walls. The objective was to maintain the original unique look of the building whilst strengthening the structure to perform under seismic loadings.

The following retrofit techniques were implemented:

  • Carbon Fibre Reinforced Polymer strips (CFRP) were installed to the interior and exterior face of the stone walls to improve out-of-plane capacity.
  • Fibre Reinforced Polymer wrap (FRP) was used to line the inside of the ground floor stone walls to improve in-plane performance.
  • Stone chimneys replaced with stone/plaster clad light weight steel and timber framing
  • Gable end stone walls secured to roof, ceiling and floor framing
  • Ceilings at roof and first floor level were re-lined with plywood diaphragms to ensure that seismic loads are distributed to the in-plane strengthened stone walls

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Contact Us

Wanaka Office

Physical address:
Level 3, 99 Ardmore Street, Wanaka.
(Entrance up stairs at back of building off
public car park - Dunmore Street)
Postal address:
PO Box 456, Wanaka, 9343
Office phone:
(03) 443 4531

Christchurch Office

Physical address:
Level Three, Moore Stephens
Markhams Building
335 Lincoln Rd (Cnr Bernard and Lincoln)
Addington, Christchurch 8024
Postal address:
PO Box 9440, Tower Junction,
Christchurch, 8149
Office phone:
(03) 338 3351

Queenstown Office

Physical address:
Suite 7, Level One
34 Grant Road
Frankton, Queenstown 9371
Postal address:
PO Box 456, Wanaka 9343
Office phone:
(03) 441 3351

Invercargill Office

Physical address:
192 Spey Street
Invercargill, 9810
Postal address:
PO BOX 456, Wanaka, 9343
Office phone:
(03) 218 3351
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