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The Exchange is a multi use, mixed program building. TheExchanges main principle is based upon the interaction betweencreative professionals and the general public. The idea is basedon the intertwining of three programmtic typologies: Showcase,Exchange and Production, and the benefits which can be drawnfrom this system.

The buildings form is a functional expression of the behaviour of soilparticles during liquefaction. Through utilising its natural verticalprocess as a circulation language and a way to arrange space TheExchange principle is meshed with the liquefaction properties togenerate a concept based around changing conditions.

The site connects High Street to Hereford Street, within the compactcore of the Christchurch Central Business District. The conceptdraws its potential from a previous laneway location, asserting theimportance of the development and reopening of these iconic sites

throughout the city.

The structure terminates at the north and south facades withcantilevered segments over the streets. The building is bound onthe west and east by neighbouring buildings. The building is a steelstructural grid of columns and beams, with two r einforced concreteservice cores and a sandblasted glass curtain wall facade.

The ground floor provides a largely open, uninterrupted space forconvenient pedestrian access between the two main roads. Coupledwith open-plan concept retail space, the ground floor aims to makeuse of a potentially high level of pedestrian traffic and entice visitorsup through the buildings higher levels.

The first and second levels have spaces for both work, productionand the exhibition of the various creative projects generated by thetenants. The idea is to have flexible space so that it can be used fora range of purposes depending on the event that day or night.

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8

DENSE SEDIMENT

SATURATED LOOSE SEDIMENT

LIQUEFACTIONBEFORE EARTHQUAKE

The young sediment Christchurch is built on means the city is prone to the effects ofliquefaction during an earthquake event. Liquefaction variation is determined by theepicentre location, magnitude, depth, duration and geological conditions.Flat areas such as this, where the water table sits only a few meters under the surface,release a build up of pressure through s and boils and waterspouts in many areas andin lateral spreading and cracking near rivers. This occurs as waters are removed fromthe lower lying saturated loose sediment underground during the shaking. The wateris forced up through weak points in the denser sediment just below the surface. Asthis occurs the loss of water in the lower layers gives way to compaction, producing avariety of effects to the natural and built environment.

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SOILTHE GEOLOGY OF CHRISTCHURCH

BASALT FLOWSANDESITE

POST-GLACIAL ALLUVIUM AND DUNE SANDGREYWACKE AND AGRILLITEFLOW RHYOLITE, BRECCIA AND OBSIDIANSANDSTONE, SILTSTONE AND CLAYSTONE

DIAGRAM: AMANDA NAKARMI

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LIQUEFACTIONSIMULATOR

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SEQUENCE IN SECTION: 5s INTERVALS

SOIL CONDITIONS (LIQUEFACTION PRONE)

LOWER: LOOSELY PACKED AND SATURATED SOIL.UPPER: COMPACTED, FINER SOIL

LIQUEFACTIONSIMULATION

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LATERAL SPREADING

Soil particles spread laterally under seismicstress, transferring volume from high areasto lower areas, especially near rivers andother bodies of water.

GROUNDWATER PRESSURE

As the soil compacts groundwater is forcedout of the saturated particles, surgingupwards and breaking through the densetop layer soil.

SAND BOILS / WATER FOUNTAINS

Resulting from the increase in groundwaterpressure, sand boils and water fountainsoccur through fissures in the surface layer.

GROUND SETTLEMENT

Over the duration of an earthquake theearth subsides as the seismic wavescompact and densify the loose, saturatedsecond layer soil.

LIQUEFACTIONEFFECTS

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SEQUENCE IN SECTION: 5s INTERVALS

< HIGH RATE OF CHANGE >

< LOW RATE OF CHANGE >

LIQUEFACTIONRATE OF CHANGE

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HAGLEY

AVEN

UE

SELWYNSTREET

DEANS

A

VE

RICCARTONAVENUE

WALLACESTREET

STEWARTSTREET

MONTREALSTREET

ROLLESTONAVENUE

CAMBRIDGETERRACE

VICTORIASTREET

OXFO

RDTERR

ACE

CRANMERSQUARE

HAGLEYPARK

LATIMERSQUARE

DURHAMSTREET

MOORHOUSE AVENUE

FITZGERALDAVENUE

COLOMBOSTREET

MANCHESTERSTREET

MADRASSTREET

BARBADOESSTREET

SAINT ASAPH STREET

TUAMSTREET

CASHELSTREET

LICHFIELDSTREET

HEREFORDSTREET

WORCESTER STREET

GLOUCESTER STREET

ARMAGH STREET

CHESTER STREET

KILMORE STREET

PETERBOROUGH STREET

SALISBURYSTREET

BEALEYAVENUE

PARKTERRACE

HARPER

AVENUE

FERRYROAD

ATIGU

AST

REE

T

D

9

HI G H

S T RE E T

CBD BLUEPRINTSITE PROPOSAL

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SITE CONTEXTPEDESTRIAN CONNECTIONS

HEREFORD STREET

850SQM

RETAILPRECINCT [200m]24HOUR CHRISTCHURCH[350m]AVON RIVER [450m]

RESEDENTIALDEVELOPMENT [200m]STADIUM [550m]

THEFRAME[200m]LATIMER SQUARE[400m]

BUSINTERCHANGE[350m]

INNOVATIONPRECINCT[200m

]

AVON RIVER [300m]ARTGALLERY [750m]HAGLEYPARK(850m]CANTERBURYMUSEUM [950m]

CATHEDRALSQUARE [150m]

CASHEL STREET

HIGHSTREET

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PROGRAMEXCHANGE PRINCIPLES

EXCHANGEPRODUCTION SHOWCASE

OFFICE

WORKSHOP

REHEAR

SAL

BAR/CLUB

C

AFE

SHOP

EXHIBT

ION

PERFORMANCE

DISP

LAY

NON PUBLIC PUBLIC

INTERACTION PRESENTATIONDEVELOPMENT PRODUCTION PUBLICATION

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CIRCULATION

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CIRCULATIONLIQUEFACTION + EXCHANGE

SPREAD COMPACT SURGE ERUPT

CIRCULATION CONCEPT

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CIRCULATION CONCEPTVERTICAL EXCHANGE SYSTEM

PRODUCTION

EXCHANGE

SHOWCASE

PRODUCTION

EXCHANGE

SHOWCASE

PRODUCTION

EXCHANGE

SHOWCASE

SERVICES

&ACCESS

SERVICES

&ACCESS

SERVICES

&ACCESS

EXHIBITION

RETAIL

GALLERY

RETAIL

REHEARSAL

CATWALK

OFFICE

BAR / CLUB

BAR/CLUB

OFFICE

WORKSHOP

CINEMA

RETAIL

AUDITORIUM

GALLERY

RETAIL

RETAIL

SERVICES

&ACCESS

SERVICES

&ACCESS

SERVICES

&ACCESS

SERVICES

&ACCESS

SERVICES

&ACCESS

SERVICES

&ACCESS

I

I

CIRCULATION DESIGN

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OFFICE

WORKSHOP

REHEARSAL

BAR/CLUB

CAFE

STORE

EXHIBTION

PERFORMANCE

DISPLAY

INTERACTION

PRESENTATION

DEVELOPMENT

PRODUCTION

PUBLICATION

NON-PUBLIC

PUBLIC

SPREAD

COMPACT

SURGE

ERUPT

PRODUCTION

EXCHANGE

SHOWCASE

CIRCULATION DESIGNVERTICAL EXCHANGE SYSTEM

CIRCULATION DESIGN

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CIRCULATION DESIGNPROGRAM MASSING

SERVICES

- Service Core [2]- Elevator Shaft [4]- Mens Toilet [6]- Womens Toilet [6]

- Stairwell [4]

CIRCULATION

- Open Passages [5]SHOWCASE

- Exhibition Hall [1]- Exhibition Corridor [1]

- Informal Cinema [1]

FLOOR PLAN

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FLOOR PLANGROUND LEVEL

10000

OPEN COURTYARD SPACE

WC WC

WC

WC

100005000

5000

5000

5000

5000

5000

10000

10000

10000

1

JIHGFE

D

C

B

A

2

3

4

CONCEPTSTALLS

SERVICES CORESERVIC

ESCORE

SCALE | 1:200

FLOOR PLAN

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FLOOR PLANSECOND LEVEL

SCALE | 1:200

10000 100005000

5000

5000

5000

5000

5000

10000

10000

10000

1

JIHGE

D

C

B

A

2

3

4

F

KITCHEN / LOUNGE OPEN-PLAN STUDIO

PRIVATE STUDIO WC WC

WC

WC

PRIVATESTU

DIO

EXHIBITIO

NSPACE

SERVICES CORESERVICESC

ORE

SECTION

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SECTIONLONGITUDINAL

HEREFORD STREET

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GROUND FLOOR

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SECOND FLOOR

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