THE GREEN BUFFER

7/28/2019 THE GREEN BUFFER

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CHRISTCHURCH

Proposed CCDU

Green Frame

CCDU PROPOSAL | THE GREEN FRAME

Part of the CCDU Blueprint for the Christchurch rebuild was the introduc-

tion of a Green Frame. The Green Frame is a proposed belt of green space

that extends from Hagley Park, and around the inner CBD. The land for the

green frame is being purchased by the government to help stabilise land

values by controlling the supply of vacant lots on the real estate market.


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Public Transport

Proposals

CCDU PROPOSAL | single centralised bus exchange400

m t r

0 200

meters

m t r s

CCDU PROPOSED BUS EXCHANGE

The Green Frame helps

deliver a more compact city core. This controversial pro-

posal also offers a series of unique design challenges that provide the basis for

our proposal. In the CCDU Blueprint, a single centralised transport exchange is

proposed, while The Green Buffer proposes zero cars within the Green Frame

and seven decentralised public transport hubs to support transport within the CBD.


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THE PROPOSAL

What:The removal of all cars from within the greenframe. How: A net-

work of seven decentralised transit hubs located on the edge of the

greenframe act as a series of car buffers, by providing car parking at

these boundaries and continued user movment into the CBD via public

transport.The proposed greenframe thereby becomes the Green Buffer.

Decentralised Public

Transport Network

park car


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PRE EARTHQUAKE

parking spaces in structures: 3,288

parking spaces on street: 3,260

total car parking spaces: 6,448

Parking Program

Requirements

400

m t r

0 200

meters

m t rs


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Key User Movements

& Trafc Routes

6 1

t rs

6 1

t rs

6 1

t rs

key motor trafc routes key cyclist routes key pedestrian routes0 200 600 800 1000

meters

t rs

0 200

meters

400 0 200 600 800 1000

meters

t rs

0 200

meters

400 0 200 600 800 1000

meters

t rs

0 200

meters

400


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Hybridised ProgramCAR PARKING MEETS GARDENS + GALLERIES + EVENTS.

In order for The Green Buffer proposal to fully push the potential of the

green frame as an urban design scheme, it was nessecary to reconstruct

the proposal of simply parking a car and taking one of three modes of

public transport into the city. The buildings needed to be activated as at-

tractions in themsleves, leading to the adoption of hybridised programs.


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Tuam & Madras Site

SITE OVERVIEW | locations of Chirschurchs seven public transport hubs SITE| Madras & Tuam street corner


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SURROUNDING HEIGHTSAmongst the remaining buildings in the immediate site, the major-

ity of them have an average building height of 5-14m high. This

building design therefore tries to be in keeping with the others in

the area so that despite the somewhat emptyness of the broad-

er site, there is a unifying factor across the buildings still standing.

Site Surroundings

BUILDING HEIGHTS | height classication of surrounding buildings

below 5m high above 30m

25-29m high

20-24m high

15-19m high

10-14m high

5-9m high


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SOFTWOOD

Open cell structure

passing nutrients

through

Timber Cell StructureTHE DIFFERENCE | Hardwood | Softwood

The main difference is the presence of vessels in hard-

woods and absence in softwoods. Softwoods have an

open cell structure which means the cells themselves act

as conduits for water and nutrients and have openings

to other cells acting as the vessl es we see in hardwoods.


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Integrated spaces, designatedcirculation

External Inuences

The effect of varying external foces on developing timber cells during their

growth period can be read architecturally. The images of cell structures can

be read as a series of spaces within a plan that are either integrated or sep-

arated with a designated ow or a free owing circulation. These circulation

mappings can then be used to organise spatial patterns for the different users.

Hardwood Cell

Transformations

Integrated spaces, free owcirculation

Separated spaces, designatedow

Separated spaces, free owcirculation


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Site Circulation

outgoing motor trafc

incoming motor trafc

motor trafc entry and exit pointsoutgoing bus

incoming bus

bus user entry and exit points

1

0 200

meters


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Key Users Circulation

To Site

The four key users in this building can be categorised

under motor trafc users, bus users, cyclists and pedes -

trians, which can then be further broken down into those

users who are eitherincoming or outgoing from the build-

ing. Located in the South East corner of the green frame,

the majority of motor trafc is from the Eastern suburbs

ofSumner, Redcliffs, Mt Plesant, Heathcotte and Avon -

side travelling into the CBD. There is heavy pedestrian

and cycle use at the west end of the site, as users park

their cars to continue across the green frame and i nto the

CBD by foot or by bike. Busses travel one way up Madras

Street and pull into the site at either of the three platforms.

Creating user specic entry and exit points to the building

helps ensures pedestrian safety, with minimal amount of

intersecting paths for pedestrians and motor vehicles.


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Internal Circulation

SHORT TERM CIRCULATION SEPARATED SPACES | DESIGNATED FLOW

CIRCULATION STRATEGY

The internal circulation for this building program was broken into two main

types: Short Term & Long Term Circulation - both of which were informed

by the two differing types of users. The conceptual driver behind the in -

ternal circulation strategy derrived from the composition of the timber cell

In timber cells a degredation of cellulose leads to a collapse and disconnection


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1111 LINCOLN ROAD | HERZOG & DE MEURON

The Miami Beach multi-storey car park is one that changes peoples perception of

what a parking building is. The concrete buil ding with foor slabs supported on wedge-

shaped colums transforms from car parking into a social gathering space- hosting

activities such as parties, yoga classes and weddings as well as high end shops.

Program

Precedent


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Program

Application

CAR PARKING MEETS GARDENS + GALLERIES + EVENTS.

In order for The Green Buffer proposal to fully push the potential of the green frame

as an urban design scheme, it was nessecary to reconstruct the proposal of simply

parking a car and taking one of three modes of public transport into the city. The

buildings needed to be activated as attractions in themsleves, leading to the adop-

tion of hybridised programs.


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Program

Grouping

GROUND FLOOR FIRST FLOOR

music circulation

bike parking

services

car parking

dining

retail


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User Movement

Into the Plan

Timber Cell Flows

The movement of users through the plan is very much similar to how nutri-

ents and water are circulated through the hardwood timber cellls to access

the different parts of the tree. Hardwoods have continuous pipes running the

length of the tree and serve as conduits for water and nutrients. The cells are

closed and cannot function as conduits so rely on these vessels for circul-

tion. The large staricase that spans the length of the building across multiple

levels acts in a similar nature to the vessles in hardwoods- it helps to easily

circulate the users and tt provides the core to the building around which the

rest of the spaces form.


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Floor Plans

First Floor

Ground Floor

UP

DOWN

DOWN

UP


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Material Palette

WALLS & FLOORING

The main load bearing walls are made of thick pre cast

black concrete panels. The desired nish is somewhat

rough. These large panels help to give the building a

sense of grounding to the site and a weighty solidness.

A grey nished concrete will be used for the ooring.

CONCRETE FLOORING BLACK CONCRETE PANELS

FACETED WOOD

FACETED STAIRCASE

The main vessel for transportation within the building is the

prominent staircase that spans the length of the building. It

is constructed out of a light coloured Fir wood in sheet pan-

els to create the faceted, sculptural quality of the staircase.


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Context


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68

ContextChristchurch CBD

Christchurch

Urban Strategy


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70

Urban StrategyCar free CBD

0 2 00 4 00 6 00 8 00 1 00 0

m et er s

No private vehicles will be allowed within the greenrame. Bus-ses, Cyclists and pedestrians will occupy the inner city.

Tere will be seven decentralized mixed use transportation hubs

that allow or carparking alongside gallery spaces, green spacesor perormance spaces. Teir locations are indicated by red dotson the beside diagram.

0 2 00 4 00 6 00 8 00 1000

m et er s

Site


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My transportation hub (Art Park) will be ocused on the NorthWestern sector o Christchurch. Tis area is o high socio-eco-nomic standing and is rich in culture.

Concept


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p

Capilary actionTe ow o substance through space due to negative pressure.Ease o transer is directly correlated to the size o the space. Tesmaller the space the less orce required to draw the substancethrough it.

Cramped spacevs. open space.

reecelldiagram.

Form


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Pointed arch

Te pointed arch is derived rom the Gothic style. Exampleso the pointed arch could be ound throughout various histor-ic buildings, most o which where lost in the earthquake. Tepointed arch has been repeated about a square and diagonallythrough the center to create a vaulted arch. Tere are three mod-ule sizes; small, medium and large.

Treemodules, small, medium, large.

Structure


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Engineered timber beams

Te buildings wooden structure and symetrical plan lends itselto good earthquake perormance, which is crucial in the shakycity o christchurch.

Perspective

ProgramA t P k


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Art Park

My building will satisy the needs o daily commuters and artenthusiasts alike. It will provide an interchange between car, bus,bike and pedestrian activity. It will act as a flter or the green-rame only allowing busses bikes and pedestrians to transer intothe inner city.

+

Plans


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UP

DN

DN

UP

DN

UP

DN

UP

DN

UP

Ground oor 3rd oor 4th oor

5th oor 6th oor 7th oor

CirculationSite & Building


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Site & Building

Busses, Bikes and pedestrians are given direct into the citythrough the centre o my building. Cars drive in part o the waythen work their way up the building via a series o ramps.

Busses

Cyclists &Pedestrians

Cars

Materials + FacadeWood | Concrete | Glass


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Wood | Concrete | Glass

Wooden and concrete ooring will be used together to empha-sise the dierence between the ast and slow spaces, concretewill be used in the carparking spaces to encourage people tobe more ecient with their time and wood will be used in thegallery spaces to encourage lingering to appreciate the art thatsurrounds them.

Oak boards. Polished concrete

Laminated timber beams Glass

EnergyEnvironmentalSustainability


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Environmental Sustainability

Te sun heats water in evacuated glass tubes [fg.1]. Tis wa-ter is then transered through the service core and distributedthroughout the building where heating is required [fg.2]. Whenthe building has reached the desired temperature the water isthen used to heat a large insulated heat core underneath thebuilding [fg.3]. Tis heat core can then be drawn rom to heatthe building when sun is not availible either at night or duringwinter months [fg.4].

[fg.1] [fg.2]

[fg.3] [fg.4]


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introduction

Christchurchisat avery uniquecrossroadswhere,in thewake of

therecentearthquakes,it willrebuildlargepartsof thecity.This

yearChristchurchwilltransitionfromacityundergoingmassivedemoli-

tionintoacityunderconstruction,forthisreasonitisacriticaltime

toparticipatein thediscourseshapingthe futurecity. Theworldis

watchingasChristchurchemerges fromthe ruins,andwe havethe

rareopportunitytoinfluencewhat willbe builtthroughproposalsput

forwardbythiscourse.Inthiscoursewewillseizethistimeand

takeadvantageofittoengagethepublicandfuelthedebateby

providingcreativedesignswhentheyareneededmost,whichisnow.

StudentshavebeenrequiredtoutilizeresearchfrompreviousAD1&D62012projectsandusedtheseasastartingpointfromwheretheywould

developtheirownuniquedesignpropositions.Whileeachstudentdevel-

poedtheirowndesignproposition,studentshaveworkedingroupsto

comeupwithanurbanplanwhichlinkstheprojectstogether.Theteams

projectsmustcometogetherinsomewayanditisuptotheteam

ofstudentstocreativelydecidehowtheprojectsrelatetooneanother.


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proposed green frame

TheGreenFramehasbeenproposedintherecentlyreleasedCCDU

blueprintandhastheuniquepotentialofsuturingtogetherarchitecture,

landscapearchitectureandurbanism.TheGreenFrameisthecityslargest

transit ionalproject.TheGreenFrameandAvonPrecinctwillcreatea5km

looparoundthenewinnercoreandactasanextensionofHagleyPark.

TheGovernmentispurchasingprivatepropertyintheseareaswiththeeco-

nomicintentionofstabilisinglandvaluesbymitigatingthesupplyofvacant

lotsontherealestatemarket.Forthenext10-15yearsthislandismeant

tocreateagreenbeltaroundanewlydefinedinnerCBD.Itisaboldand

ambitiousurbaninterventionandonethatoffersuniquedesignchallenges.


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current bus exchange

m t r

currentbusexchange

0 200 400 600 800 1000


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ccdu transport hub


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ccdu transport hub

m t r

CCDUtransporthub

busroute

The CCDU has p ropo sed to c reate a t ra ns -

port hub one block south of the original station.

TheCCDUproposalalsotakesthecentralisedapproach.

0 200 400 600 800 1000

hub identities


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hub identities

m t r

0 200 400 600 800 1000

urban proposal


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urban proposal


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site selection


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site selection

m t r

the garden park

Theselectedsiteislocatedonthegreenframeitselfand

thus,agreenapproachneedstobetaken.Theintention

willbetodesignatransportcentrewhichincorporatespark-

ingwithpublicgardensforpeople(businessmennearbyand

employeesfromthehealthprecinct)toenjoy.Thisideaisto

assistwithopposingthestereotypicalcarparkingbuildings.

The design will challenge the typically strong con-crete structure with the organic forms of gardens.

0 200 400 600 800 1000

site analysis


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site analysis

viewfromstasaphstontosite

site


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program requirements


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food/drinkgarden/park people bikes cars buses

program requirements


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bus waitingarea

bus waitingarea


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user circulation


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cars arr ive at thetransporthubandpark

people make the irwayonfootto theirdesired destina tion

busarrivesatterminal

passengersdepartbus

newpassenge rsboar dbus

busdepartstheterminal

peoplearrive atthetransportstationonfoot

tak ing thebusint otheci ty

bikehires

bikes into city

bikehires

site circulation


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scale :

tuam st

st asaph st


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precedents


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Building:SugamoShinkinBank

Architect:EmmanuelleMoureaux

sunlight study


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summersun

wintersun

Thesunstudyshowsthatthelightwellsarerequiredtobeatanglesfacingthesuninor-dertoreceiveoptimumlightingforthebuilding.

L ight wel l wil l be made of a tin tedglass which willfilterlightinto thebuild-ingwithout giving offharshlight duringtheafternoonwhen thesun ismost direct.

tuam stst asaph

S N

plansscale :


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bus waiting area

bus waiting area

scale :

LEVEL ONE LEVEL TWO LEVEL THREE


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Documents

THE GREEN BUFFER