Welcome to Batchelar McDougall Consulting

George Street, Dunedin

A 3 storey brick (URM) 1930’s Dunedin high value retail building was assessed as having a ‘low’ earthquake %NBS capacity rating (essentially no lateral bracing system ‘across’ at ground floor level) and the existing tenant had chosen to break the lease early because of this.

The building owner was after a cost effective and rapid strengthening ‘design / construction’ process that would bring the building up to 100%NBS capacity. The building façade had an ‘historic listing’ and in general the existing 3 storey brick front section and the single storey rear section were showing signs of decay.

BMC developed a pair of linked eccentrically braced frames (EBF’s) on the ground floor level to provide lateral stability while introducing a series of horizontal and vertical steel cross brace elements at upper floor levels to drag earthquake loads into the ground floor EBF’s.

The EBF frames provide a ductile mechanism for the overall structure allowing the lateral displacement / movement where it can be tolerated in the brick ‘out of plane’ actions while the inherently ‘stiff’ upper floor levels (with brick cross walls) are braced more rigidly by the cross brace system that has been added. BMC provided a full design / detail / construction monitoring service for the project.

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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
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