sebnem tuncel march ud portfolio

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PORTFOLIO MARCH URBAN DESIGN 10 - 11 UNIT 04 TUTORS BERNHARD RETTIG ANNA ROSE DANIEL RINGELSTEIN S. ŞEBNEM TUNÇEL UCL THE BARTLETT SCHOOL OF ARCHITECTURE

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Sebnem Tuncel MArch Urban Design Portfolio 2010 - 2011 The Bartlett School of Architecture UCL

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Page 1: Sebnem Tuncel MArch UD Portfolio

PORTFOLIOMARCH URBAN DESIGN 10 - 11

UNIT 04TUTORS

BERNHARD RETTIGANNA ROSE

DANIEL RINGELSTEIN

S. ŞEBNEM TUNÇEL

UCLTHE BARTLETT

SCHOOL OFARCHITECTURE

Page 2: Sebnem Tuncel MArch UD Portfolio

TERM 1

TERM 2

TERM 3

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CONTENTS

FIRST WORKSLondon vs Istanbul Comparative Research

Analysis of two cities in time

Patchwork CityCity of Layers

Grahame Shane & Recombinant UrbanismHeterotopia hunt in west London and movie making

URBAN DESIGN PROJECTLooking for Boundaries in Istanbul

Analysis of the growth, transport, user groups and boundaries in Istanbul

First Design Strategies: Overall VisionTypes of boundary analysis, locating city scale problems and choosing the site

Site Analysis & First Design ProposalUrban typology and user group analysis & initial thoughts on boundary dilution

Design ReconsiderationReconsideration of the design proposal’s extent

From Concept to DetailDefining typologies for the proposal & integration with the site

Finding the BalanceWorking with new block typologies & definition of new public realm level

Final StepsFurther boundary dilution and detailed design considerations

Page 4: Sebnem Tuncel MArch UD Portfolio
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Analysis of Two Cities in Time

LONDON vs ISTANBUL RESEARCH

Page 6: Sebnem Tuncel MArch UD Portfolio

GROUP A

Amir Sadafi

Mayuri Sisodia

Qing Shen

Qunqun Tang

Şebnem Tunçel

Woong Heo

Xiaoqing Qian

Yu Suzuki

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TWO CITIES IN TIMELONDON vs ISTANBUL RESEARCH

Page 8: Sebnem Tuncel MArch UD Portfolio

A TALE OF POWER, PROSPERITY, DISASTERS AND WARS

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TWO CITIES IN TIMELONDON vs ISTANBUL RESEARCH

Page 10: Sebnem Tuncel MArch UD Portfolio

A TALE OF POWER, PROSPERITY, DISASTERS AND WARS

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TWO CITIES IN TIMELONDON vs ISTANBUL RESEARCH

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“City of Layers”

PATCHWORK CITY

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INSPIRING IMAGES

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CITY OF LAYERSPATCHWORK CITY

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Sketches & First Thoughts

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CITY OF LAYERSPATCHWORK CITY

City of Layers

My city is the city of layers; layers that have been formedover time with changing circumstances, politics, needs, andtechnology. The mix of these layers gives the city its uniqueidentity and liveliness, keeping the city alive and vibrant.

The city keeps changing; new layers are added, some oldlayers start to fade and pieces of them start to dissolve anddisappear under the others. Each new piece finds its placenext to, on top of or under the existing.

My proposed future sustainable city also finds its position onthe others as a new layer. It is conscious of having to find itsplace among the existing layers, but has the courage andpower to change the city as a whole. It affects and chang-esthe existing while at the same time being open to change.

The new city is the city of webs and links. It is a new way ofexperiencing the city as a 3D world, making transportationmore efficient. There is no need for wide and congestedroads anymore; the city offers new functions for the space left behind.

Project Synopsis

Page 18: Sebnem Tuncel MArch UD Portfolio

Presentation Plan showing layers accumulating

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CITY OF LAYERSPATCHWORK CITY

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CITY PATCHINGPATCHWORK CITY

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Grahame Shane & Recombinant Urbanism

HETEROTOPIA

Page 24: Sebnem Tuncel MArch UD Portfolio

HETEROTOPIA

Group-A

Amir Sadafi - Mayuri Sisodia - Qing Shen - Qunqun TangŞebnem Tunçel - Woong Heo - Xiaoqing Qian - Yu Suzuki

Page 25: Sebnem Tuncel MArch UD Portfolio

HETEROTOPIAGRAHAME SHANE AND RECOMBINANT URBANISM

Group-A is looking for heterotopias in West London...

We began walking in the west of London and discovered bubbles of spaces which are almost floating.

Though they are physically within the urban bound-ary something places them to the psychological outside.

They exist with invisible boundaries around them-selves and sometimes define themselves with it.

The first place we discovered is a museum. The sec-ond is a Japanese community and Japanese tem-ple around Acton. Third is a busy shopping street and a shopping mall. Fourth is an Indian neighbour-hood in Wembley.

They all exist in a different space and time within the city.

In order to express the idea of invisible boundary which we called “bubbles of spaces” for duality and contradictions, the reality and unreality; we tried to reflect the four specific places through glass, mirror, body of a car, or surface of a cell phone.

Project Description

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HETEROTOPIA

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GRAHAME SHANE AND RECOMBINANT URBANISMHETEROTOPIA

Through Our Eyes: The Movie

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Searching for a site to address city scale problems

Analysing city’s transport systemsSetting a goal and defining statement of intent

Analysing city’s rapid growth and consequencesAnalysis of Kucuk Armutlu and Karanfilkoy shanty towns and their surroundings

LOOKING FOR BOUNDARIES

Page 30: Sebnem Tuncel MArch UD Portfolio

North-west Istanbul’s divisions in city scale

First Statement of Intent

I would like to

discover the clash and overlap between the public and private realm from pedestrian scale

to urban scale and where the connections lie

question the definition of the boundaries

propose flexible solutions where boundaries can be stretched and spaces can be merged from one another while integrating the advantages

of different areas to each other

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CITY GROWTH & CONSEQUENCESLOOKING FOR BOUNDARIES

Dominant roads and severe traffic problem

City’s transport systems

City’s urban growth

pre-fifteenth century

nineteenth century

1950

1970

1990

2000

Main roads Rail system Ferry & metrobus

Issues to be addressed

Unusable & unused footbridges

Obsession with wider roads

Disappearing pavements

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URBAN FABRIC ANALYSIS

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THE SITE’S BOUNDARIESLOOKING FOR BOUNDARIES

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1

2

1 2

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SOCIO-ECONOMIC BOUNDARIESLOOKING FOR BOUNDARIES

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Steps to create a strategic vision

Categorising boundary types in a rapidly growing cityAnalysing types of residential growth

Identifying the severe traffic problem in IstanbulCreating a strategic vision for a sustainable city

FIRST DESIGN STRATEGIES: OVERALL VISION

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BIG PICTURE

Types of residential growth

Third bridge plan and future nightmare

1st bridge

2nd bridge

proposed 3rd bridge

City’s diversity

Traffic problem

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FIRST DESIGN STRATEGIES: OVERALL VISIONBOUNDARY TYPES

Types of urban boundaries in a rapidly growing citycultural

social

urban grain change

geography

roads

City’s growth

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NORTHWEST ISTANBUL AND ITS FASCINATING DIVISIONS

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PRESENT DAY ZONES AND PROPOSAL’S STRATEGIC VISION

Present day zones and pressure pointsBooming economy and growing CBDs are threatening restricted residential areas

Proposal planEncouraging CBDs to grow towards each other. New residential & mixed use ring

FIRST DESIGN STRATEGIES: OVERALL VISION

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Levent site analysis and producing first design proposal

Analysing different urban typologies on the siteAnalysing different user groups

Detailed look into the boundaries in the siteClassifying existing points of interest

Listing the site’s problems, strong points and opportunitiesIdentifying changeable areas

Forming initial thoughts on boundary dilution

SITE ANALYSIS & FIRST DESIGN PROPOSAL

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DIFFERENT TYPOLOGIES AND USES ON SITE

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SITE ANALYSIS & FIRST DESIGN PROPOSALLEVENT SITE ANALYSIS

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DIFFERENT USER GROUPS & BOUNDARIESWalls of Levent: Astonishing physical boundaries between the low income residential neighbourhood and central business district

Buyukdere Street: 8-lane road separating Levent into two

West Levent: Low income residential area. Ex-shanty town. Organic street structure. Dense urban fabric with six or seven sto-rey apartment buildings and no open spaces. Lively commercial streets. Organised weekly street markets.

East Levent: High income residential area. Small scale one or two storey houses with private gardens. Well maintained streets. Empty public parks with no attraction. Individual private sports and social clubs.

Central Levent: Central business district. Divided by Buyukdere Street. High-rise and skyscraper corporate business buildings. No public space. Unfriendly streets. Most open spaces are car parks.

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MAIN TWO BOUNDARIES ON SITE

Road texture map

Urban grain map

SITE ANALYSIS & FIRST DESIGN PROPOSAL

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FOCAL POINT ANALYSIS

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SITE ANALYSIS & FOCAL POINT INSERTION

Focal point insertion at strategic locations

Changeability map East-west pedestrian flow Border and metro stations

SITE ANALYSIS & FIRST DESIGN PROPOSAL

Page 50: Sebnem Tuncel MArch UD Portfolio

INITIAL DESIGN IDEAS & SETTING A GOAL

Initial thoughts on boundary dilution

First Design Ideasdiluting the boundary

mixing different user groupscreating an alternative outdoors

environment for the residentsproposing new dense mixed use grain to

accommodate different income users

Setting a GoalCreating a vibrant dense mixed use

sustainable environment with significant open spaces to make a more desirable

Levent, thus reducing the number of commuters from east to west and easing

the city’s traffic congestion

Page 51: Sebnem Tuncel MArch UD Portfolio

DETERMINING THE PROPOSAL AREA

Existing building heights analysis map

Levent high-rise vs low-rise Solitary shanty town buildings

SITE ANALYSIS & FIRST DESIGN PROPOSAL

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PROPOSAL STAGES

Stage 1: Focal pointsInserting public attractions

Stage 2: Open spacesInserting new open spaces

Stage 3: AlignmentDefining guidance lines for

new development

Stage 4: Urban grainInserting new urban fabric

Focal point 1: Landmark

Focal point 2: Square, cafes & monday street market extension

Focal point 3: Outdoor cinema & performance area

Focal point 4: Climbing wall & skatepark

Focal point 5: Park

Page 53: Sebnem Tuncel MArch UD Portfolio

PROPOSAL VERSION 1SITE ANALYSIS & FIRST DESIGN PROPOSAL

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DESIGN RECONSIDERATION

Reconsideration of the design proposal

Determining major design alternativesFurther site analysis with travel distances

Addressing the severance of the neighbourhood to the eastTransforming the streets of the central business district and residential areas

Carrying the proposal in third dimension with a concept modelDefining heights for the new proposal area

First envelope concept design

Page 56: Sebnem Tuncel MArch UD Portfolio

THREE MAJOR DESIGN ALTERNATIVES

Option 1Small interventions along the border

Option 2Total regeneration of Levent back streets

Option 3 Hybrid option

Page 57: Sebnem Tuncel MArch UD Portfolio

DESIGN RECONSIDERATIONDETAILED SITE ANALYSIS

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Proposal Version 2

The extent of the proposal increased to address the severance of the neighbourhood to the east and to improve Levent’s

high-rise business area.

The diagram on the opposite page is showing the new proposal area together with the focal point locations and the

guidance lines for the new proposal.

Page 59: Sebnem Tuncel MArch UD Portfolio

PROPOSAL VERSION 2DESIGN RECONSIDERATION

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PROPOSAL

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FOCAL POINT CHARACTERS

Focal point 1: Landmark / Viewing Tower

For the people to enjoy beautiful Istanbul views

Focal point 2: Public Square

Surrounded by locally owned cafes and with space for Monday

market to expand

Focal point 3: Outdoor Performance Area

Weekly screenings on the existing security wall

Focal point 4: Climbing Wall / Skatepark

Transforming walls into a new lunch-hour activity

Focal point 5: ParkA quality open space where peo-

ple can meet, relax and escape from busy city life

DESIGN RECONSIDERATION

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ENVELOPE EXPLORATION IN 3D

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CONCEPT MODELDESIGN RECONSIDERATION

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HAND DRAWINGS & SCHEMATIC PROJECT MAP

Project area, commercial axis and bridges across the main road

New building heights and main pedestrian mobility

Public transport nodes and guidelines for new buildings

Schematic Project Map

Page 65: Sebnem Tuncel MArch UD Portfolio

NEW BUILDING HEIGHTS

Determining building heights, major mobility axis, existing and proposed commercial lines across Buyukdere Street

DESIGN RECONSIDERATION

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ENVELOPE DESIGN - FIRST ATTEMPTS

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LOOKING FOR AN APPROACHDESIGN RECONSIDERATION

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PRESENTATION

Major mobility axis is carried from west to east by raised landscaped bridges across Buyukdere Street

Focal point 5 at intersection of major mobility axis and new main boulevard

Page 69: Sebnem Tuncel MArch UD Portfolio

MODEL

Focal Point 4

Climbing wall and skatepark

Focal Point 5

Park

DESIGN RECONSIDERATION

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FROM CONCEPT TO DETAIL

Defining typologies for the proposal & integration with the site

Defining new road structureDetailed open space studies

Analysing the points of interest in the east and developing the major mobility axis accordinglyDefining new land uses

Defining new block typologies and applying them to the site

Page 72: Sebnem Tuncel MArch UD Portfolio

NEW STREET NETWORK & TYPOLOGIES

Levent’s new boulevard for the Ramblas typology

Ismet inonu Street for Cours Mirabeau typology

Assigning character to two main streets in the proposal:

The two main streets in the proposal were inspired by the Ramblas and Cours

Mirabeau, two famously successful streets.

Levent’s new boulevard and the Ramblas comparison:

The new boulevard is designed for people to be on, to walk, to meet and to talk. The Ramblas is successful in this goal.

The Ramblas runs approximately 1.1 kms , starting and finishing with a major active node. This corresponds to the proposed

Levent Boulevard.

Levent new boulevard location

The Ramblas location

N

N

New street network:

Proposed streets are well integrated with the existing street structure.

Existing straight CBD road structure

Existing organic road structure

Proposed road structure

Page 73: Sebnem Tuncel MArch UD Portfolio

OPEN SPACES AND CONNECTIONS IN DETAIL

Focal point 1: Landmark / viewing tower

Surrounding open space

New boulevard

Existing major commercial street extended

Existing weekly street market to be extended

Mosque

Primary school

Focal Point 2: Square surrounded by cafes

Focal Point 3: Outdoors performance area

Focal Point 4: Skatepark & climbing wall

Mosque

Primary school

FROM CONCEPT TO DETAIL

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STITCHING CONCEPTFROM CONCEPT TO DETAIL

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CONNECTIONSSketch showing existing and proposed

points of interest and desire-lines

Sketch showing extent of the proposal and active frontages

Sketch showing the most needed con-nection points and the insertion of the

raised landscaped connections

Page 77: Sebnem Tuncel MArch UD Portfolio

STITCHING THE TWO SIDES TOGETHER

Locating raised landscaped connections across Buyukdere Street and continuation of the public realm

FROM CONCEPT TO DETAIL

Page 78: Sebnem Tuncel MArch UD Portfolio

DIAGRAMS FOR LAND USES

Detailed land uses

commercial lines, cafes & restaurants, shops & offices, shopping malls, schools and mosques

Diagram for detailed land uses

active frontages & areas where people gather

Land-use map for the proposal

residential

gf commercial & upper residential

gf commercial & upper offices

business

places of intrest

green

Page 79: Sebnem Tuncel MArch UD Portfolio

LAND USES MAPFROM CONCEPT TO DETAIL

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FIRST APPLICATION OF THE ENVELOPE TO THE BLOCKS

Merging divided blocks with envelope concept:

This attempt was soon considered inade-quate. Although the envelope corresponded

to the existing building heights and open spaces, the direct application resulted with a block typology that is alien to the existing

dynamic fabric.

Page 81: Sebnem Tuncel MArch UD Portfolio

REVISED PROJECT AREA MAP FROM CONCEPT TO DETAIL

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PROPOSED BLOCK TYPOLOGIES

Exist

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Ope

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mor

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em

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Build

ing

size

smal

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Loca

tion

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Bloc

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ock

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Bloc

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3

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BUILDING ENTRANCES AND COMMERCIAL LINES APPLIED

Exist

ing

fabr

icBl

ock

type

- 1

Bloc

k ty

pe -

2Bl

ock

type

- 3

commercial axis & shop entrances

commercial axis & shop entrances

commercial axis & shop entrances

commercial axis & shop entrances

FROM CONCEPT TO DETAIL

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BLOCK TYPOLOGY APPLICATION TO THE SITE

First attempt for the block typology application along the site:

The first attempt proposed a separated pe-destrian route between the blocks which was soon abandoned.

This approach thought to be not appropriate for a good integration with the existing road structure and not suitable for the existing street culture.

Two attempts for the block typology application

Block typology application (opposite page):

The application of the specified block typologies on an east - west strip along the site

new block layout

new block intermediate detail

new block detailed divisions

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MASTER PLAN VERSION 1FROM CONCEPT TO DETAIL

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FINDING THE BALANCE

Working with new block typologies & definition of new public realm level

New road structure for the CBDMerging the stepped block typologies with the envelope concept

New public realm level in detailZooming into a strip along the site

Page 88: Sebnem Tuncel MArch UD Portfolio

BLOCKS IN 3D

Envelope concept applied to blocks on the model

Platformed connections between the high-rise business buildings & new roof gardens at appropriate locations on the existing roofs

Landscaped connection across Buyukdere Street

FP5: Park

FP4: Skatepark

FP4: Skatepark

FP3: Outdoors performance

East - west major mobility axis

Existing fabric

Stepped typology trial

Page 89: Sebnem Tuncel MArch UD Portfolio

FINDING THE BALANCEMERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 1

This section shows the application of the defined block typologies and divisions on a chosen block.

The union of the curvy character of the envelope and the stepped character of the block typologies. The stepped character of the proposed buildings offers roof gardens for the residents.

Insertion of the new organic road structure between Levent’s high-rise buildings A detail from the new road infrastructure junction

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WORKING WITH THE PLATFORM

Section B - B

Platform penetration sketches

Section A - A

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NEW PUBLIC REALM LEVEL

Level connections

New functions and a new lively integrated multi-level environment

FINDING THE BALANCE

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SETTING UP RULES

Platform porous character

Maximum interaction between levels

Upper floor plan

Lower floor plan

Perforation study 1

Perforation study 2

Rules for the new public realm

Mobility on the new public realm level on the landscaped bridges is mainly pedestrian and bicycle based.

The paths are relatively narrow and the street surface is cobbled. These paths can still accommodate vehicles if needed, though they are not designed to offer through access.

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NEW PUBLIC REALM LEVEL STUDIES

- Sharp edge single platform surface

- Continuation of the same block typologies between the existing high-rise buildings

Searching for the right platform

- Sharp edge single platform surface

- New curvy block typology between the existing high-rise buildings

- Liquid form platform surface for maximum lower level connection

- Hybrid block typology trial between the existing high-rise buildings

1 32

FINDING THE BALANCE

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MERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 2

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MASTER PLAN VERSION 2FINDING THE BALANCE

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DETAILED PLAN STRIP ACROSS THE SITE

Detailed plan strip location on master plan

FINDING THE BALANCE

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SECTION & ELEVATIONSection showing the new public realm level and curved platform trial

Sectional elevation showing the proposal in context

FINDING THE BALANCE

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FINAL STEPS

Further boundary dilution and detailed design considerations

Re-visiting the proposal for a seamless boundary dilutionInserting new public functions into the existing business buildings

Looking for a new atmosphere in multi-level public realm & new streetsExtending the block typologies across the site to dissolve boundaries

Further study on merging stepped block typology with the envelope concept

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PUBLIC REALM IMPROVEMENT

Section:

New public functions for the lower storeys of the existing business buildings and under the new public realm level

Detailed plan progress

Image 1: Regularising platform penetrations

Image2: Ensuring the continuity of the block typologies across two boundaries: Both between the west neighbourhood & CBD and Buyukdere Street.

Creating a seamless movement between the proposed new blocks from the west residential area, between the high-rise business buildings and eventually to the east residential neighbourhood.

1

2

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FINAL STEPSNEW ACTIVITY-RICH ENVIRONMENT

New feeling:

New multi-level public realm and active frontages defined by the proposed new public functions insertion

Continuity

Continuity of activities along the site

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Levent’s new boulevard typology based on the Ramblas, Barcelona

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REVISITING STREET TYPOLOGIESNew Ismet Inonu Street typology based on the Cours Mirabeau, Aix-en-Provence

FINAL STEPS

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PAGE TITLE

Improvements

Continuous green network

New bus stop locations on the junctions of the existing main road and the proposed

new major mobility axis

Application of continuous block typologies across the boundaries

new block layout

new block intermediate detail

new block detailed divisions

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MASTER PLAN VERSION 3FINAL STEPS

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MASTER PLAN VERSION 4FINAL STEPS

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Upper level floor plan

Lower level floor plan

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FLOOR PLANS & NEW FUNCTIONSFINAL STEPS

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MERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 3

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PROPOSAL IN CONTEXTFINAL STEPS

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DETAILED PLAN STRIP ACROSS THE SITE

Continuation of the public realm and the new block typologies across the site

Sectional elevation showing the proposal in context

FINAL STEPS

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Figure ground plan - Before

Figure ground plan - After

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FIGURE GROUND PLANSFINAL STEPS

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SECTIONNew public realm level and proposed new functions for existing buildings

FINAL STEPS

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BA

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NEW VISION FOR LEVENT

D

D

C

CBA

A multi-perspective view of Levent’s new activity-rich public realm

FINAL STEPS

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