Sebnem Tuncel MArch UD Portfolio

PORTFOLIO MARCH URBAN DESIGN 10 - 11

S. ŞEBNEM TUNÇEL UCL THE BARTLETT SCHOOL OF

ARCHITECTURE UNIT 04

TUTORS BERNHARD RETTIG ANNA ROSE DANIEL RINGELSTEIN

TERM 1

TERM 2

TERM 3

FIRST WORKS London vs Istanbul Comparative Research Analysis of two cities in time

Patchwork City City of Layers

Grahame Shane & Recombinant Urbanism

Heterotopia hunt in west London and movie making

URBAN DESIGN PROJECT Looking for Boundaries in Istanbul

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

First Design Strategies: Overall Vision

Types of boundary analysis, locating city scale problems and choosing the site

Site Analysis & First Design Proposal

Urban typology and user group analysis & initial thoughts on boundary dilution

Design Reconsideration

Reconsideration of the design proposal’s extent

From Concept to Detail

Defining typologies for the proposal & integration with the site

Finding the Balance

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

Final Steps

Further boundary dilution and detailed design considerations

CONTENTS

Analysis of Two Cities in Time

LONDON vs ISTANBUL RESEARCH

Amir Sadafi Mayuri Sisodia Qing Shen Qunqun Tang ล ebnem Tunรงel Woong Heo Xiaoqing Qian Yu Suzuki

GROUP A

TWO CITIES IN TIME

LONDON vs ISTANBUL RESEARCH

A TALE OF POWER, PROSPERITY, DISASTERS AND WARS

TWO CITIES IN TIME

LONDON vs ISTANBUL RESEARCH

A TALE OF POWER, PROSPERITY, DISASTERS AND WARS

TWO CITIES IN TIME

LONDON vs ISTANBUL RESEARCH

“City of Layers”

PATCHWORK CITY

INSPIRING IMAGES

CITY OF LAYERS

PATCHWORK CITY

Sketches & First Thoughts

City of Layers My city is the city of layers; layers that have been formed over time with changing circumstances, politics, needs, and technology. The mix of these layers gives the city its unique identity and liveliness, keeping the city alive and vibrant.

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

My proposed future sustainable city also finds its position on the others as a new layer. It is conscious of having to find its place among the existing layers, but has the courage and power to change the city as a whole. It affects and changes the 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 of experiencing the city as a 3D world, making transportation more efficient. There is no need for wide and congested roads anymore; the city offers new functions for the space left behind.

Project Synopsis

CITY OF LAYERS

PATCHWORK CITY

Presentation

Plan showing layers accumulating

CITY OF LAYERS

PATCHWORK CITY

CITY PATCHING

PATCHWORK CITY

Grahame Shane & Recombinant Urbanism

HETEROTOPIA

Group-A Amir Sadafi - Mayuri Sisodia - Qing Shen - Qunqun Tang ล ebnem Tunรงel - Woong Heo - Xiaoqing Qian - Yu Suzuki

HETEROTOPIA

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 boundary something places them to the psychological outside.

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

The first place we discovered is a museum. The second is a Japanese community and Japanese temple around Acton. Third is a busy shopping street and a shopping mall. Fourth is an Indian neighbourhood 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

HETEROTOPIA

GRAHAME SHANE AND RECOMBINANT URBANISM

HETEROTOPIA

Through Our Eyes: The Movie

HETEROTOPIA

GRAHAME SHANE AND RECOMBINANT URBANISM

Searching for a site to address city scale problems Analysing city’s transport systems Setting a goal and defining statement of intent Analysing city’s rapid growth and consequences Analysis of Kucuk Armutlu and Karanfilkoy shanty towns and their surroundings

LOOKING FOR BOUNDARIES

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

North-west Istanbul’s divisions in city scale

pre-fifteenth century

nineteenth century

1950

1970

1990

Issues to be addressed Unusable & unused footbridges Obsession with wider roads

Dominant roads and severe traffic problem

Main roads

City’s transport systems

Rail system

Disappearing pavements

2000

City’s urban growth

Ferry & metrobus

CITY GROWTH & CONSEQUENCES LOOKING FOR BOUNDARIES

URBAN FABRIC ANALYSIS

THE SITE’S BOUNDARIES

LOOKING FOR BOUNDARIES

2

1

1

2

SOCIO-ECONOMIC BOUNDARIES LOOKING FOR BOUNDARIES

Steps to create a strategic vision Categorising boundary types in a rapidly growing city Analysing types of residential growth Identifying the severe traffic problem in Istanbul Creating a strategic vision for a sustainable city

FIRST DESIGN STRATEGIES: OVERALL VISION

Types of residential growth

City’s diversity

Traffic problem

proposed 3rd bridge

2nd bridge

1st bridge

Third bridge plan and future nightmare

BIG PICTURE

City’s growth

roads

geography

urban grain change

social

Types of urban boundaries in a rapidly growing city

cultural

BOUNDARY TYPES

FIRST DESIGN STRATEGIES: OVERALL VISION

NORTHWEST ISTANBUL AND ITS FASCINATING DIVISIONS

Present day zones and pressure points

Booming economy and growing CBDs are threatening restricted residential areas

Proposal plan

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

PRESENT DAY ZONES AND PROPOSAL’S STRATEGIC VISION FIRST DESIGN STRATEGIES: OVERALL VISION

Levent site analysis and producing first design proposal Analysing different urban typologies on the site Analysing different user groups Detailed look into the boundaries in the site Classifying existing points of interest Listing the site’s problems, strong points and opportunities Identifying changeable areas Forming initial thoughts on boundary dilution

SITE ANALYSIS & FIRST DESIGN PROPOSAL

DIFFERENT TYPOLOGIES AND USES ON SITE

LEVENT SITE ANALYSIS

SITE ANALYSIS & FIRST DESIGN PROPOSAL

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 storey apartment buildings and no open spaces. Lively commercial streets. Organised weekly street markets.

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.

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.

Walls of Levent: Astonishing physical boundaries between the

low income residential neighbourhood and central business district

DIFFERENT USER GROUPS & BOUNDARIES

Road texture map

Urban grain map

MAIN TWO BOUNDARIES ON SITE

SITE ANALYSIS & FIRST DESIGN PROPOSAL

FOCAL POINT ANALYSIS

Focal point insertion at strategic locations

Changeability map

East-west pedestrian flow

Border and metro stations

SITE ANALYSIS & FOCAL POINT INSERTION SITE ANALYSIS & FIRST DESIGN PROPOSAL

Initial thoughts on boundary dilution First Design Ideas

diluting the boundary mixing different user groups creating an alternative outdoors environment for the residents proposing new dense mixed use grain to accommodate different income users

Setting a Goal

Creating 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

INITIAL DESIGN IDEAS & SETTING A GOAL

Existing building heights analysis map

Levent high-rise vs low-rise

Solitary shanty town buildings

DETERMINING THE PROPOSAL AREA

SITE ANALYSIS & FIRST DESIGN PROPOSAL

Stage 1: Focal points

Inserting public attractions

Focal point 1: Landmark

Stage 2: Open spaces

Inserting new open spaces

Focal point 2: Square, cafes &

monday street market extension

Focal point 3: Outdoor

cinema & performance area

Stage 3: Alignment

Defining guidance lines for new development

Focal point 4: Climbing wall &

skatepark

Focal point 5: Park

PROPOSAL STAGES

Stage 4: Urban grain

Inserting new urban fabric

PROPOSAL VERSION 1

SITE ANALYSIS & FIRST DESIGN PROPOSAL

Reconsideration of the design proposal Determining major design alternatives Further site analysis with travel distances Addressing the severance of the neighbourhood to the east Transforming the streets of the central business district and residential areas Carrying the proposal in third dimension with a concept model Defining heights for the new proposal area First envelope concept design

DESIGN RECONSIDERATION

Option 1

Small interventions along the border

Option 2

Total regeneration of Levent back streets

Option 3

Hybrid option

THREE MAJOR DESIGN ALTERNATIVES

DETAILED SITE ANALYSIS

DESIGN RECONSIDERATION

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.

PROPOSAL VERSION 2

DESIGN RECONSIDERATION

PROPOSAL

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: Park

A quality open space where people can meet, relax and escape from busy city life

FOCAL POINT CHARACTERS DESIGN RECONSIDERATION

ENVELOPE EXPLORATION IN 3D

CONCEPT MODEL

DESIGN RECONSIDERATION

Schematic Project Map

Project area, commercial axis and bridges across the main road

New building heights and main pedestrian mobility

HAND DRAWINGS & SCHEMATIC PROJECT MAP

Public transport nodes and guidelines for new buildings

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

NEW BUILDING HEIGHTS

DESIGN RECONSIDERATION

ENVELOPE DESIGN - FIRST ATTEMPTS

LOOKING FOR AN APPROACH DESIGN RECONSIDERATION

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

PRESENTATION

Focal Point 4 Climbing wall and skatepark

Focal Point 5 Park

MODEL

DESIGN RECONSIDERATION

Defining typologies for the proposal & integration with the site Defining new road structure Detailed open space studies Analysing the points of interest in the east and developing the major mobility axis accordingly Defining new land uses Defining new block typologies and applying them to the site

FROM CONCEPT TO DETAIL

Ismet inonu Street for Cours Mirabeau typology

Levent’s new boulevard for the Ramblas 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.

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

Levent new boulevard location

N

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.

NEW STREET NETWORK & TYPOLOGIES

The Ramblas location

Focal point 1: Landmark / viewing tower Surrounding open space

New boulevard

Existing major commercial street extended

Focal Point 2: Square surrounded by cafes Existing weekly street market to be extended Mosque Primary school

Focal Point 3: Outdoors performance area

Focal Point 4: Skatepark & climbing wall

Mosque Primary school

OPEN SPACES AND CONNECTIONS IN DETAIL FROM CONCEPT TO DETAIL

STITCHING CONCEPT

FROM CONCEPT TO DETAIL

Sketch showing the most needed connection points and the insertion of the raised landscaped connections

Sketch showing extent of the proposal and active frontages

Sketch showing existing and proposed points of interest and desire-lines

CONNECTIONS

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

STITCHING THE TWO SIDES TOGETHER FROM CONCEPT TO DETAIL

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

Land-use map for the proposal residential gf commercial & upper residential gf commercial & upper offices business places of intrest green

Diagram for detailed land uses active frontages & areas where people gather

DIAGRAMS FOR LAND USES

LAND USES MAP

FROM CONCEPT TO DETAIL

Merging divided blocks with envelope concept: This attempt was soon considered inadequate. 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.

FIRST APPLICATION OF THE ENVELOPE TO THE BLOCKS

REVISED PROJECT AREA MAP FROM CONCEPT TO DETAIL

PROPOSED BLOCK TYPOLOGIES Location Open space Building size

more public

larger & taller

Block type - 2

east

Block type - 3

smaller & lower

more private

west

Block type - 1

Existing fabric

Existing fabric Block type - 1

commercial axis & shop entrances

commercial axis & shop entrances

Block type - 3

Block type - 2

commercial axis & shop entrances

commercial axis & shop entrances

BUILDING ENTRANCES AND COMMERCIAL LINES APPLIED FROM CONCEPT TO DETAIL

First attempt for the block typology application along the site: The first attempt proposed a separated pedestrian 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.

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

Two attempts for the block typology application

BLOCK TYPOLOGY APPLICATION TO THE SITE

MASTER PLAN VERSION 1 FROM CONCEPT TO DETAIL

Working with new block typologies & definition of new public realm level New road structure for the CBD Merging the stepped block typologies with the envelope concept New public realm level in detail Zooming into a strip along the site

FINDING THE BALANCE

FP4: Skatepark FP3: Outdoors performance

FP4: Skatepark FP5: Park

East - west major mobility axis

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

Existing fabric

Stepped typology trial

BLOCKS IN 3D

Insertion of the new organic road structure between Levent’s high-rise buildings

A detail from the new road infrastructure junction

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.

MERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 1 FINDING THE BALANCE

Platform penetration sketches

Section A - A

Section B - B

WORKING WITH THE PLATFORM

Level connections

New functions and a new lively integrated multi-level environment

NEW PUBLIC REALM LEVEL FINDING THE BALANCE

Upper floor plan

Platform porous character

Lower floor plan

Maximum interaction between levels

Perforation study 1

Perforation study 2 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.

Rules for the new public realm

SETTING UP RULES

Searching for the right platform

1

2

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

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

- Sharp edge single platform surface

- Sharp edge single platform surface

3

- Liquid form platform surface for maximum lower level connection - Hybrid block typology trial between the existing high-rise buildings

NEW PUBLIC REALM LEVEL STUDIES FINDING THE BALANCE

MERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 2

MASTER PLAN VERSION 2 FINDING THE BALANCE

Detailed plan strip location on master plan

DETAILED PLAN STRIP ACROSS THE SITE FINDING THE BALANCE

Sectional elevation showing the proposal in context

Section showing the new public realm level and curved platform trial

SECTION & ELEVATION FINDING THE BALANCE

Further boundary dilution and detailed design considerations Re-visiting the proposal for a seamless boundary dilution Inserting new public functions into the existing business buildings Looking for a new atmosphere in multi-level public realm & new streets Extending the block typologies across the site to dissolve boundaries Further study on merging stepped block typology with the envelope concept

FINAL STEPS

1

Detailed plan progress

2

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.

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

PUBLIC REALM IMPROVEMENT

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

NEW ACTIVITY-RICH ENVIRONMENT FINAL STEPS

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

New Ismet Inonu Street typology based on the Cours Mirabeau, Aix-en-Provence

REVISITING STREET TYPOLOGIES FINAL STEPS

new block layout

new block intermediate detail

new block detailed divisions

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

PAGE TITLE

MASTER PLAN VERSION 3 FINAL STEPS

MASTER PLAN VERSION 4 FINAL STEPS

Lower level floor plan

Upper level floor plan

FLOOR PLANS & NEW FUNCTIONS FINAL STEPS

MERGING ENVELOPE WITH STEPPED TYPOLOGY VERSION 3

PROPOSAL IN CONTEXT FINAL STEPS

Sectional elevation showing the proposal in context

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

DETAILED PLAN STRIP ACROSS THE SITE FINAL STEPS

Figure ground plan - Before

Figure ground plan - After

FIGURE GROUND PLANS FINAL STEPS

New public realm level and proposed new functions for existing buildings

SECTION

FINAL STEPS

A

B

A

C

B

C

D

D

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

NEW VISION FOR LEVENT FINAL STEPS