New Horizon of Amsterdam the roofscape as an accessible space
Project presentation
NEW HORIZON OF AMSTERDAM Esther Bentvelsen ebentvelsen@gmail.com Master of Architecture Academy of Architecture Amsterdam graduation year 2022 Mentor: Rob Hootsmans Commission: Kamiel Klaasse and Ronald Rietveld
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Esther Bentvelsen New Horizon of Amsterdam
Content
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Introduction
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Fascination
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Observation
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Ambition
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Research
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Goal
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Plan
Esther Bentvelsen New Horizon of Amsterdam
Introduction
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New horizon of Amsterdam is an introduction to a new world atop of the rooftops of Amsterdam’s inner city.
New Horizon of Amsterdam I was born and raised in the Netherlands and have been facinated by the spectacular Dutch clouds since childhood. In my opinion, the Dutch landscape is characterized by the Dutch clouds. The continuously changing cloud sky is emphasized by the uninterrupted f lat man-made Dutch landscape. It creates a clear horizon and serves as a canvas for the spectacle of the clouds. It brings me peace and contemplation. In my project I want to give the Dutch clouds back to the residents of Amsterdam. By making a horizon at a new level, the residents get a new perspective on the historic city center with a landscape that accentuates the Dutch clouds and the historic height accents.
Photo: Marineterrein, place where I often walk by and my gaze is drawn to the Dutch cloudy sky, by Esther Bentvelsen
Esther Bentvelsen New Horizon of Amsterdam
Fascination
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My fascination starts with the Dutch clouds: a maximum of light and space. I myself grew up in the Dutch landscape, which is characterised by its f latness and horizontality. A landscape in which the clouds play the leading role and therefore provide a unique image that defines our landscape.
Photo: Passersby on the Red Light District in downtown Amsterdam. Image ANP
Esther Bentvelsen New Horizon of Amsterdam
Observation
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In the city center of Amsterdam, your field of view is framed by the narrow alleys and streets, and the cloudscape largely falls away. In addition, the streetscape in the historic city center is dominated by tourists. The meeting place for residents disappears and the city threatens to lose its connecting function. It causes alienation of the residents. Instead of the city being a place where people come together, it functions primarily as an economic area.
Cross-section through the inner city of Amsterdam
Esther Bentvelsen New Horizon of Amsterdam
Ambition
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I want to give the residents of Amsterdam the typical dutch sky by making places at a new improved Amsterdam level.
Jacob van Ruisdael, A view of Amsterdam, 1665-1670
Esther Bentvelsen New Horizon of Amsterdam
Research
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Dutch cloudscapes never bore: even for artists, the clouds and sky are an inexhaustible source of inspiration. The beautiful stacked clouds have inspired many of the famous Dutch painters of the early times for good reason.
Perspective of the Dutch paintings The Dutch cloud sky has long known its fame in Dutch painting. For example, Jacob van Ruisdeal used techniques to lengthen the field of view. By creating dark and light surfaces he managed to lengthen the field of vision. I want to offer the residents of Amsterdam the perspective that the Dutch painters dreamed of.
Joseph Beuys (1921-1986)
Esther Bentvelsen New Horizon of Amsterdam
Research
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For artists, too, the clouds and sky are an inexhaustible source of inspiration. According to Beuys, Dutch light changed with reclamation and the visual culture of the 16th and 17th centuries came to an end. Joseph Beuys is now considered one of the key players in 20th-century art. His work ranges from traditional artistic expressions such as drawing, painting and sculpture through multiples and large installations to public performances .
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Esther Bentvelsen New Horizon of Amsterdam
Research
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I have observed several Dutch painters and looked at their painting techniques and how they highlight the Dutch cloud sky in their paintings where the horizon and the distribution of the painting on the canvas also plays an important role.
Characteristics of the historical perspective 1. Unlimited space: the far horizon gives the suggestion of almost endless space. 2. Low Horizon: 2/3 and 1/3 ratio. The light changes the landscape, the landscape changes the light - the horizon as a balance. 3. Usually exposed high cloud sky. Water which is also a large part of the horizontal plane ref lects the light. 4. Large frame and fine scale. Painting as a window to the painted reality.
>12 m high, eye height 1.6m
>16 m high, eye height 1.6m
>20 m high, eye height 1.6m
Esther Bentvelsen New Horizon of Amsterdam
Research
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At various points in the inner city of Amsterdam, I conducted a survey of different elevations to see what height is needed to experience the horizon with its expansive views and to recognize the historical highlights.
Elevation I did this in several places accurately comparing three different elevations. At a ground level of 20 meters the historical height accents become visible and the new level is also partly situated between the existing buildings. In this way you have the new perspective, but it is also interwoven with the existing buildings.
>12 m high, eye height 1.6m
>16 m high, eye height 1.6m
>20 m high, eye height 1.6m
Esther Bentvelsen New Horizon of Amsterdam
>12 m high, eye height 1.6m
>16 m high, eye height 1.6m
>20 m high, eye height 1.6m
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12-06-2021 with the manager of the Ibis hotel
28-05-2022 13:30 o’clock with photographer Ossip van Duivenbode
28-05-2022 13:30 o’clock with film artist Justin Bentvelsen
Esther Bentvelsen New Horizon of Amsterdam
Research
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In addition to the research for finding the correct level, I have been on the roofs several times myself in different places. With hotel owner of the Ibis hotel, professional photographer Ossip van Duivenboode and filmmaker Justin Bentvelsen. Each visit was unique due to the different places and times and the everchanging cloud cover. The visit with Ossip van Duivenbode was at 6 in the morning where there was a lot of fog. It had something mystical about it and illuminated, nearby buildings suddenly came to the fore. Whereas the visit with Justin Bentvelsen showed just the vistas, with a spectacular cloud cover above.
Acoustic tranquility After my first visit to the roofs I immediately noticed, in addition to the visual peace of the cloudy sky, also the acoustic peace. The sound of the city largely falls away on the roofs. You really enter a different world that guarantees its own qualities.
12-06-2021 with the manager of the Ibis hotel
Esther Bentvelsen New Horizon of Amsterdam
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28-05-2022 13:30 o’clock: Up on the roof with photographer Ossip van Duivenbode
28-05-2022 13:30 o’clock: Up on the roof with photographer Ossip van Duivenbode
28-05-2022 13:30 o’clock: Up on the roof with photographer Ossip van Duivenbode
28-05-2022 13:30 o’clock: Up on the roof with film artist Justin Bentvelsen
28-05-2022 13:30 o’clock: Up on the roof with film artist Justin Bentvelsen
Lucas Cranach de Oude, The Golden Age, 1530
Esther Bentvelsen New Horizon of Amsterdam
Research
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Creating more open spaces for residents suits the open and free character of Amsterdam.
The free character of Amsterdam The painting by Lucas Cranach the Elder typifies the traditional characteristics of the mythical prehistoric era: the ideal of erotic impartiality and freedom of movement. A statement that I think fits well with the open and free character of Amsterdam. For example, the photos from the 1960s on the next page show how the Vondelpark was used by residents as the Hippie Mecca of Amsterdam.
Vondelpark 1960’s: Hippie Mecca van Amsterdam
Esther Bentvelsen New Horizon of Amsterdam
Vondelpark 1960’s: Hippie Mecca van Amsterdam
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Inner London
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Price increases of houses belonging to inner gardens of London. Avarage property price (£) Source: Financial Times, Liz Rowlinson, June 1, 2021. Sources: Hamptons, Land Registry
Notting Hill private gardens, Londen
2020
Esther Bentvelsen New Horizon of Amsterdam
Research
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The metropolitan city of London already has similar places where residents of a certain housing block share gardens. This brings several practical benefits.
Collective spaces for residents London has some 300 open spaces in its inner city with collective courtyard gardens for residents. It increases the livability and also provides a substantial increase in the value of the houses that are part of these gardens. Portman Estate owns these parks and is a member of the garden committee, helping to make daily decisions about maintenance and fees (an electronic key costs £270-£300 per year). These parks are privately managed by the people who live there and strictly supervise their maintenance.
Slag op de Nieuwmarkt, Amsterdam, 1980
Esther Bentvelsen New Horizon of Amsterdam
Research
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Another image that has fascinated me is the aerial image taken during the ‘Slag op de Nieuwmarkt’ in Amsterdam (1980). This shows on a large scale an emptiness that goes right through the inner city of Amsterdam. An unprecedented image which, in addition to its devastation, also provided space for temporary interventions. A river-like movement that made a completely new image of Amsterdam.
Large void in the historic center of Amsterdam Aldo van Eyck responded well by creating temporary play areas here. It shows that a large void in the historic inner city offers room for new interpretations and provides a place for residents to meet in a playful manner.
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Esther Bentvelsen New Horizon of Amsterdam
Research
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Major spatial intervention is nothing new for Amsterdam. For example, Amsterdam has experienced major explosive growth and has always adapted well to it.
Explosive growth of Amsterdam Thus, around 1625 there was an economic boom and immigrants f locked. There was a grand plan to build an entirely new city around the old town with a new fortification. This massive city expansion continued and is still going on today.
Tourists vs Locals, by Erik Fischer, Amsterdam, 2021
Esther Bentvelsen New Horizon of Amsterdam
Research
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Increasing crowding at ground level is becoming unsustainable for residents in certain areas.
Unsustainability of public space Below shows a map by Erik Fischer that maps tourism by the number of photo opportunities posted online. It shows well the most congested areas.
Tourists vs Locals, by Erik Fischer, Amsterdam, 2021
Esther Bentvelsen New Horizon of Amsterdam
Research
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In my project, I want to investigate the potential of the rooftop landscape in the historic inner city of Amsterdam at the place where the crowding at ground level is the greatest.
Research location The area around the Nieuwe Kerk and its surroundings shows densely built blocks in addition to the crowding at ground level. The area largely consists of new retail buildings which, in terms of possible surface area, gives it the most potential for the creation of a new raised landscape.
Cultural act The only connection you can make now is always through that busy ground level. At the new 20m height, residents can meet each other which creates more social cohesion and a social condensation point in the city.
Visual transquility Giving residents of the city the dutch cloudscape
Acoustic quietness A place where you can shortly withdraw from reality and the busy inner city.
Esther Bentvelsen New Horizon of Amsterdam
Goal
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I want to give the residents of Amsterdam the cloudy sky by making places at a new improved Amsterdam level.
Jacob van Ruisdael: View of Amsterdam towards the IJ from the scaffolding around the tower of Amsterdam’s new City Hall, 1665 - 1670
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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A design that is fundamentally shaped by the world below, but which also has its own language of form that responds to the qualities of the world above 20 meters.
Design principles the diagrams show the following design steps: where it gets its own form that ref lects a new landscape on the roofs of Amsterdam: 1. To be completely covered by a plane at 20 meters in height, with accents on the buildings that rise above 20 meters 2. Offset of min. 3 meters from facade for preservation of characteristic streetscape 3. Cutouts over courtyards and alleys for daylighting purposes 4. Sites where the obstruction to daylight for the building below is minimal 5. Connecting planes per building block 6. Unifying it through f luid movement and landscape organic forms. 7. Plane deforms in response to unique experiences at the 20-meter level
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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To test the minimum obstruction of sunlight to the underlying buildings, I did a comprehensive sun study that can calculate the amount of sunlight on the facades at each time point. I tested this for each season at a time when the sun is at its highest.
Minimal sunlight obstruction The solar study shows that the shapes are chosen so that there is minimal obstruction of sunlight on the facades of the buildings. below.a new landscape on the roofs of Amsterdam.
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Esther Bentvelsen New Horizon of Amsterdam
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20 m + NAP Nieuw Amsterdams Peil
20 m + NAP Nieuw Amsterdams Peil
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20 m + NAP Nieuw Amsterdams Peil
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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To test the acoustic rest, I enlisted the help of acoustic consultant Jeroen Vughts, senior consultant at LBP sight. In this conversation, I presented my plan and discussed how the plan could connect to optimise the acoustic quietness at the 20 meter mark.
Acoustic rest The conclusion after conversation with Jeroen Vughts: 1. >20 meter is already above the noise: Many sound ref lections disappear and do not reach the plane: you are already above the sound. The direct sound becomes less but also ref lections become less. 2. Distance from the edge: The necessary distance to the edge is determined by the width and intensity of the sound from the street. The further the balustrade is from the edge, the more the sound will be attenuated. 3. Glass balustrade: A glass balustrade ref lects the sound above it you sit in a kind of niche, the sound goes around it. 4. Shape: No parallel surfaces - f lared curved glass walls cause sound to bounce away.
Nieuwe Kerk and surroundings Total surface area Area walking surface Number of households Number of inhabitants Average surface area per resident
2418 m² 1203 m² ca. 78 ca. 116 10.4 m²
Avg. energy consumption per household Avg. energy consumption block Surface solar panels Total railing surface Power available per person
1239 m³ gas and 2741 kWh electricity 96.642 m³ gas and 213.798 kWh electricity appr. 20m² per person needed 10.6164 m² 90.52 m² per person
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1. The total number of inhabitants on the plane 2. Length of the glass plates and the potential energy yield
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L4 = 3810 m appr. 4572 m²
Esther Bentvelsen New Horizon of Amsterdam
Plan
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Research the surface area, look at the number of residents who can use it and the additional benefits it brings.
Number of inhabitants The number of inhabitants calculated from the latest statistics from the municipality of Amsterdam and placed on the surface, approximately 10 m² per inhabitant
Glass surface for energy generation The total length of the glass plates was calculated and the possible energy generation was calculated. Of course, not every part is equally well positioned and the vertical inclination angle is not completely optimal for energy generation. But given the large glass area, it can generate enough energy for all residents.
Elementen Raming Plateau 28 April 2022
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TOTALE DIRECTE BOUWKOSTEN
Vloeren op grondslag
Versterking fundering bestaande woningen Constructie Kolommen, rond 300 mm, 16 mm dik Hoofdliggers HEA 600
Aantal
Eenheid
Ankerpunten t.b.v. trap Onvoorziene kosten
160 stuk
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Vloerafwerking loopgedeelte: biocomposiet met reliëf Vloerafwerking: biocomposiet, wit, hoogglans Afwerking onderzijde: biocomposiet, wit, mat Balustrades en leuningen Glazen balustrade, 20 mm Aluminium railing Trappen Trappen
Balustrades en leuningen Installaties Water
Regeling klimaat en sanitair
PV panelen in glazen balustrade incl montage Elektra: energievoorziening, verlichting Centrale elektrotechnische voorzieningen Krachtstroom Verlichting
€ 80.000
€ 172.710 € 205.200
€ 40
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€ 45.000 € 48.000 € 66.000
1 post 75 stuk
€ 500.000 € 5.000
€ 500.000 € 375.000
9 stuk
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385 m2 385 m2
1000 stuk
385 m2
1 post
385 m2
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€ 5.000
€ 311.395
€0
€ 70 € 45 € 45
988 m
€ 1.610.350
€ 118.440
€ 171
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Afwerking Dakafbouwconstructies Sparingen t.b.v. trap
Totaal per Onderdeel € 5.553.740
€ 900.000
1200 m2
Hoofddraagconstructies
Totaal
€ 500
220 m2
1010 m
Trekdraden t.b.v. windverbanden
Prijs per eenh.
1800 m2
Secundaire liggers, HEA 400 Kleine liggers t.b.v. plaat
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€ 60.500,00
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€ 103.000,00
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€ 6.477.006,50
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€ 829.920
€ 39.520 € 544.000
€ 64.000 € 1.051.200
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116 bewoners
2381 m2 oppervlak
ca. 20 m2 oppervlak per bewoner Kosten per m2 per bewoner
Kosten ca. 10 m2 loopvlak per bewoner Waarde Amsterdam centrum
Waarde woning na toevoegen plateau Waardevermeerdering 2
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Wtb.: vloeistof- en gasinstallaties Afvoer vaste stoffen
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Cost estimate which shows that the input is increased by more than 200%
bron: D&S Landscape, PVE der Dieren, 2010
van 4 m tot 30m
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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Increase in value In this area of Amsterdam, outdoor space is worth as much as indoor space. A cost estimate shows that the cost of making the plane increases by >200% and therefore also gives a substantial increase in the value of your home.
Space for Flora and Fauna At the 20 meter height, the ‘gierzwaluw’ and ‘meervleermuis’ can nest and take shelter. The plane will therefore be provided with nesting opportunities.
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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Space for Flora and Fauna In addition to the quality of giving the Dutch cloudscape to the inhabitants, you also add value by making planes at the 20-meter mark.
Summarized, these are the following additional qualities: 1. Additional surface: In addition to the additional 10m² of outdoor space, currently vacant attic f loors will have access from the new ground level. 2. Value increase: Value of the investment increases by over 200 percent. 3. Generation of energy: Application of solar cells in glass railing: enough surface to power entire building block. 4. Space for Flora and Fauna: nesting for the ‘gierzwaluw’ and ‘meervleermuis’.
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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Access The design of the stairs includes the following principles: 1. Slender stairs join the formal language of the plane: a cloudlike f luid movement upward 2. Construction points of staircase to existing building and columns 3. Accessibility from multiple building levels to reduce the distance between the plane and the residents. Comfort for the residents is the focus here.
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Esther Bentvelsen New Horizon of Amsterdam
Plan
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Access to the elevated park is organised in the following way: 1. Stairs go from resident-owned courtyards, exsiting cores of f loors, so they do not have to cross the busy ground level. Existing elevator cores of stores are continued to the platform, with the upper portion being of glass. 2. Stairs and elevators land in the middle of the walkway. Once at the top, they get to see the wide view.
Usage Each plane is also accessed by one elevator, to which residents are given an electric key and is accessible at limited times. Other residents of residential blocks that have realized a plateau will also receive such an electronic key. This allows them to use other areas during the opening hours of the stores.
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Esther Bentvelsen New Horizon of Amsterdam
Building Act Section 2.5 Stairs Minimum width of stairs 0,8 m Minimum clear height above stairs 2,3 m Minimum slope 0,22 m Maximum rise 0,188 m
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Single staircase shall not span a height difference of more than 4 m. Where there is a greater difference in height, an intermediate landing with a surface area of at least 0.8 m x 0.8 m must be provided.
New staircase 20 metres high 108 treads Top step 185 mm Access steps 220 mm After each 22 treads a landing of 0.8m x 0.8m 5 landings with heights of 20 m
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Stairs anchored like a long string to the existing building and construction.
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Aluminium window frame and door turning inwards, colour similar to staircase
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Staircase: 20 metres high 108 steps, optrede: 185 mm, aantrede: 220 mm
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Horizontal detail, connection stairs and second floor house
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Esther Bentvelsen New Horizon of Amsterdam
Exterior 21.200 + P Top of balustrade
Finishing top coat: bio composite with Twaron fibers, high gloss. To reflect the clouds. 20.000 + P New Amsterdam level
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New aluminum frame and door turning inwards, powder coated in color similar to staircase, white RAL 9010, matt
Aluminum finish at recess, powder coated to match stairs, white RAL 9010, matt
Aluminum railing same as on the platforms
Staircase beam twice 40x100 mm, 8 mm thick, in consultation with the structural engineer Anchoring of staircase to existing exterior wall in consultation with structural engineer
7000 + P Second floor
Exterior
Glass balustrade detailed in steps. Maximum glass size: 3 meters
Finishing staircase: bio composite with Twaron fibers, white mat. Walking surface anti-slip
Staircase: 20 metres high 108 steps, optrede: 185 mm, aantrede: 220 mm
Base plate for staircase support in consultation with structural engineer P=0 Ground floor
Vertical detail connection staircase to existing building
Ref. John Portman, Westin Bonaventure Hotel, Los Angles, 1974
Esther Bentvelsen New Horizon of Amsterdam
Plan
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Maintenance and control The surfaces are an extension of the gardens within the open building blocks, but located at a higher level. It is a communal space for the residents. To create a safe world for the residents, there are two skywatchers who keep an eye on the sky park during the day.
A total of three different discussions with the structural engineer to come up with a clear construction principle.
Esther Bentvelsen New Horizon of Amsterdam
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Construction After several meetings with Rudi Royakkers, senior structural engineer at ABT, we came to the conclusion that for the slenderest of the platforms, the choice will be made for partly a full beam bridge construction and a truss.
ref: Nescio bridge, cycle path to IJburg, length 780 metres, Jum Eyre, Amsterdam, 2006
All-steel girder structure
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45
5080
35
13 treden van 185 mm = 2300 mm vrije hoogte 97
80 80 319 319 31980
103
76 19
55
39
104
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25 491 25 491 49125
650 650 139 139 139650
63 84
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60 60 516 516 51660
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103
103 103 103 103 103
76 76 76 76 76 21
95
19 19 19 19 19 13 treden van 185 mm = 2300 mm vrije hoogte
55 55 55 55 55
58
34
42
42
13 treden van 13 13 treden treden van van 13 treden mm =van 2300 185 mm 2300 13 treden 185 mm = =van 2300 185 mm = 2300 mm vrije hoogte mm mm vrije = hoogte 185 2300 mm vrije hoogte mm vrije hoogte mm vrije hoogte 97 97 97 97 97
97
84
39 39 39 39 39
103
76
19
104 104 104 104 104
63 63 63 63 63
55
84 84 84 84 84 42 39
63 21 104
63
13
72
5
66 66 66 66 66
84
19 19 19 19 19
66
42 42 42 42 42
84 84 84 84 84 19
911 911 911000
63 63 63 63 63
42
103
84
84
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21 63
9110
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55
42 42 42 42 42
63
21 21 21 21 21
103 84
58 63
21
42 42 42 42 42
2121 21 21 21
103 103 103 103 103
84 84 84 84 84
63 63 63 63 63 42 42 42 42 42
21 21 21 21 21
42
21
6035
58 58 58 58 58
42
42
21
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21 21 21 21 21
58
21
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76
6035 6035 6035
63
42 42 42 42 42
5858 58 58 58
42
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21 21 21 21 21
58
21
Hoofdliggers: Main structure Hoofdliggers:
Hoofdliggers:
42
21
HEA 600 HEA 600 HEA 600
overspanning 9.6 HEA 600maximale maximum span 9.6 meter maximale overspanning 9.6 meter meter maximale(0.6 overspanning 9.6 meter x (0.6 x 16) (0.6 x 16) 16) (0.6 x 16)
Secundaire liggers:HEA 400 Secondary HEA 400 Secundairebeams liggers:HEA 400
Secundaire liggers:HEA 400maximale overspanning 6.4 meter maximum span 6.4 meter maximale overspanning 6.4 meter maximale(0.4 overspanning 6.4 meter x x16) (0.4 16) (0.4 x 16)(0.4 x 16)
103
21 21 21 21 21 21
42
21
58 58 58 58 58
2121 21 21 21
42 42 42 42 42 58
58
4242 42 42 42
42
5858 58 58 58
Randbalken:
HEA 160
Edge beamsHEA 160HEA HEA 160 Randbalken: 160 Randbalken: maximale overspanning 2,56 maximum span meter overspanning 2,56 meter meter maximalemaximale overspanning 2,562.56 meter (0.16 (0.16x 16) (0.16 x x16) 16) (0.16 x 16)
Kolommen: mm, mm dik Columns 300 mm, mm Kolommen: 12 mm dik12 Kolommen:300 mm, 300 300 mm, 1212 mm dikthick Delen smaller dan 3 volledig staal referentie Parts than 3 metres to(cf. bereferentie made(cf. entirely of steel (cf. Delen smaller dan 3 meter volledig staal Delennarrower smaller dan 3 meter meter volledig staal (cf. referentie fietsbrug) reference fietsbrug) fietsbrug) bike bridge Amsterdam) SparingRecess t.b.v. lift oflift trapgat for or of stairwell Sparing t.b.v. lift trapgat Sparing t.b.v. lift of trapgat Windverbanden m.b.v.using dunne trekdraden inwires x en yin the Wind bracing thin tensile and Windverbanden m.b.v. dunne trekdraden in yy y direction for Windverbanden m.b.v. dunne trekdraden in xxxen en richtingthe t.b.v. stabiliteit purpose stability richting t.b.v.ofstabiliteit
richting t.b.v. stabiliteit
Tegen Against buigen van de plaat: bending ofde theplaat: plate: Tegen buigen van buigen van de plaat: y / 16 =Tegen x yy 16 y/// 16 16== =xx x van twee steunpunten y = overspanning yy of two support points overspanning van twee steunpunten y== =span overspanning van op twee steunpunten x = minimale horizontale maat dunste punt
xx horizontal maat dimension at thinnest minimale op punt x== =minimum minimale horizontale horizontale maat op dunste dunste punt point
Construction principle set up in several consultations with the structural engineer, using the bicycle bridge in Amsterdam as a reference.
Esther Bentvelsen New Horizon of Amsterdam
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6. Aluminum deck with small beams that span 2 meters so that plate only needs to span 30 cm cf. specification of structural engineer. Finishing bio composite, seamless
5. Secondary beams according to the manufacturer’s specifications, HEA 400. Edge beams according to the specifications of the structural engineer, HEA 160.
4. Slender parts of all-steel bridge constructions
3. Main structure: Partly a steel girder structure with main girders as per constructor’s specification, HEA 600
2. Columns 300mm, 16mm thick with main beams HEA 600. Wind bracing (windverbanden) by thin tension wires.
1. Connection to the structural walls of the existing buildings.
Construction principle
HEA 160
HEA 600
HEA 400
HEA 600
Cross-sectional plane: as minimal and thin as possible at a height where you can enjoy the cloudy sky in the crown of the tree.
HEA 160
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Esther Bentvelsen New Horizon of Amsterdam
Glass ballustrade detailed in platform. Maximum glass size: 3 meter. Glass with integrated solar panels in consultation with supplier.
Finishing top coat: bio composite with Twaron fibers, high gloss. To reflect the clouds.
HEA 160
HEA 600
Floor drain and waste garbage can (built-in) with finish similar to plateau Cover gutter for drainage via columns Construction platform Column 300 mm, 16 mm thick Main beams c.h. 9.6 m, HEA 600, cf. Secondary beams at 6.4 m centres, HEA 400, according to the constructor’s specifications. Supporting fins, 10 mm thick Beams 40x40 mm c.h. 2000 mm for plate Finishing platform Below 20 meters: Biocomposite, Twaron fibers, texture mat, color white, seamless. Above 20 meters: Biocomposite, Twaron fibers, glossy texture, color white, seamless. Walking surface with an anti-slip layer.
Vertical detail connection to existing building: platform
Post 106x60x2700 mm, cf. constructor’s specification
Roof decking
3.1 Third floor
Replace roof tile Tile batten 25x38 mm Gutter shelf 25x130 mm Counter batten 15x45 mm Gutter Gutter bracket Self-drilling screw shear rule wall plate Mineral wool insulation
Healing masonry
Vertical detail connection to existing building: roof
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Esther Bentvelsen New Horizon of Amsterdam
Exterior
0.1 Ground floor Existing masonry
-1 Crawlspace
If necessary, strengthen foundation in consultation with structural engineer.
Workfloor 120mm C10/15 with shrink net
Existing foundation with shear wood and longitudinal wood
Vertical detail connection to existing building: foundation
Scale model 1:50 showing the cross sections of the plane with the materials
Esther Bentvelsen New Horizon of Amsterdam
Plan
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Material The design goes to accentuate the world above 20 meters. This means that the material should be as simple and minimal as possible and serve as a kind of canvas for this new world of clouds and historical height accents. Therefore, I chose the bio composite material with the ingredient Twaron fibers. Twaron is extremely light and five times stronger than steel. It retains its shape and strength despite varying weather conditions and is heat resistant. Twaron is typically used in the marine, aviation and space industries. These unique properties enable a seamless and smooth surface to be achieved over 100 meters in length. This ensures that my surfaces can be made virtually seamless which creates a calm image that does not distract from the view.
Bio composite with twaron fibers with anti-slip coating, high gloss
Bio composite with twaron fibers, high gloss for the non walking area
Materialpallet: simplicity in materials, the focus is on the Dutch skyscape
Esther Bentvelsen New Horizon of Amsterdam
Stairs: Bio composite with twaron fibers, matt.
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Balustrade plateaus and stairs: Curved glass surfaces with aluminum balustrade
0
Floor plan scale 1:1500 showing the urban incorporation of the plan.
1500
3000
6000
21 42 58
21
31
40
61
82
13 treden van 185 mm = 2300 mm vrije hoogte
103
97 103 76 19
55
39
104
63 84
66
19
42 84
42
63
63
76
21
42
103 21
84
58 63
21
42
42
21
42
103
58
21
84
42 63 21
103
84
21 63
42 21
42
21
42
58 58
42
58
42
58
21
104 76
21 58
97
13 treden van 185 mm = 2300 mm vrije hoogte
103
42
42 21
58
66
82
10
4
84
103
0
Floor plan scale 1:500 showing the urban incorporation of the plan with the rise points
1500
3000
6000
Section scale 1:200
Section scale 1:200 which also shows the underlying storerooms and toilets.
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0
200
400
800
Scale model 1:500 showing urban incorporation
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Scale model 1:300 of a building block showing planes with the points of ascent and underlying storerooms
View towards The Dam square
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View towards the Bijenkorf and Oude Kerk
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Wide view towards the Koepelkerk
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