Council on Tall Buildings and Urban Habitat

Why Tall?
2011, 1st Annual CTBUH International Student Design Competition
Competition Jury Chair, William Pederson
View an Overview of the 2011 Competition
A competition aimed to shed new light on the meaning and value of tall buildings in modern society from the perspectives of green, safety, and humanity. Public awareness of urban sustainability has forced designers to rethink and reinvent the role of the high-rise building type. They must contribute to the protection of endangered environments and offer sustainable alternatives to how cities operate. Tall buildings are no longer just mere representations of modern cities; they are an integral part of our everyday life. They have expanded their role from providing space for commercial purposes to include satisfying residential needs. They are fast becoming an important feat of human engineering, as they meet the growing demands of urban dwelling and reshaping the landscape of modern cities.

Some of the multi-layered elements that participants should take into consideration include: the use of new materials, technologies, aesthetics, and novel spatial organizations, studies on globalization, flexibility, adaptability, and the digital revolution. This is also an investigation on public and private space and the role of the individual and the collective in the creation of a dynamic and adaptive vertical community. There are no restrictions on site, program or size, although the project should be based on a “real” site(s) in a real location. The objective is to provide maximum freedom to the participants in proposing imaginative design ideas for new constructions.

Xiaokai Huang, Dong Jin & Lingyun Yang
1st Prize
The purpose of "MultipliCITY" is to promote a more effective and efficient life cycle and energy usage in the urbanization process through a strategy of adaptive and flexible urban programs according to the site, the environment, and the proper design to make full use of natural light, which reinforces the sustainability of the building and the city.

809_Cloud Skyscraper
Sungjin Jang, Hojun Choi, Yohwan Jo, Youngshin Kim, Sewook Son & Hyunkyu Lim
2nd Prize
The workshop addresses the redevelopment of a dismissed industrial area in the East of the residential zone of Marghera. The brief asked students to design a tall building along with a system of low-rise structures.

628_Vertical Neighborhood
Daniel Sacristán Contreras
3rd Prize
This tower aims to create a self-sustaining neighborhood with a unique element - a continuous pedestrian ramp. This ramp acts like a typical street, allowing access to all of the housing units and public facilities. When a tall building takes on the characteristics of a vertical street, it is able to move beyond the typical high-rise and become an expansion of public space while providing more opportunities for social interaction.

188_Culture Transcend
Davin Tanasa
Special Mention
In this project, conventional residential habitation is extrapolated into a more open arrangement to foster a more connected community in the vertical world. Floors are grouped into unique "blocks" and lobbies replace corridors, where people of different generations can gather and interact; kids can play, and seniors can tend to communal gardens.

243_Tower Fusion
Mirera Raphael Binyanya
Honorable Mentions
Composed of an east and west tower connected together at the base and top, Tower Fusion splay as it rises from the ground creating a giant ‘hollow atrium’ at mid-height and converge again at the top. A suspended spinal structure in located In the void containing intermediate vertical circulation and providing excellent panoramic views.

450_Continuidad Vertical Del Parque
Anna Fernández Abelló, Javier Clavé León, Iván Valero Fernández & Guillem Villanueva Nolla
Honorable Mentions
Rejecting the traditional model of a singular vertical tower, the project proposes connected twin towers with different heights for integration within the environment. The main, taller tower is a point of reference while the lower one relates with the neighbor buildings.

709_Archi-Urban Hybrid
Dennis Kam Fung Lui
Honorable Mentions
Archi-Urban Hybrid pursues a high dense vertical development from the prospective of the people instead of pure economical drive. However, the project does not intend to sacrifice commercial activities, rather a mix and balance to achieve mutual gain.

731_Undulating Tower
Dobrina Encheva, Teofana Haralampieva & Stanislava Markovska
Honorable Mentions
The concept is based on the idea of dividing one regular structure into two connected undulated bodies; the perimeter of the building remains elegantly aligned with the Manhattan street grid. With its unique vision, the tower enriches the dynamic city silhouette and could become an icon of Lower Manhattan.

804_Eco-Void Skyscraper
Dongwook Kim, Yonghan Lim, Sangil Han & Yonggi Kim
Honorable Mentions
Eco-Void Skyscraper is a multi-function building with entertaining spaces such as the eco-green park, a music hall, shopping plaza and a public square. Large punched openings on the exterior reduces air resistance and visually connect the building to its surroundings. Interior voids create universal space with no specific function yet adaptable to fit any purpose.

857_Urban Fabric
Christian Hahn
Honorable Mentions
Urban Fabric Tower anticipates a new way of high rise organization creating a new infrastructure, a functional arrangement and an optimal environment for all functions and users. The building is organized around the idea of a city district where the structure becomes the street network and the function parcel is located in between.

101_Urban Agricultural Office
Jong-Hoon Kim & Woo-Tack Lee
As agriculture has been removed from the city, it has become an industry in decline as people move to the cities for work. Concurrently, we remove green space from our cities and implement open green space in the new tower to recover from the damage. Urban Agricultural Office integrates agriculture with technology and the officeTower.

111_Why Tall?
Pavlo Kryvozub
This proposal explores the future of a typical Kiev site to reflect on the increased need for higher density and a method of becoming less dependent on Russian energy sources. The project consists of a high-rise gateway to the site which embodies the sustainable aspirations of contemporary Ukraine.

123_Vertical Flow
Jaeseop Shin & Junsang Seo
Vertical Flow creates a new methodology of natural ventilation in a high-rise building by implementing a curved façade to induce the flow of natural ventilation in a double-skin cavity. This is due to the varying incidence of the sun's angle at each floor heating the lower portion of the cavity to induce stack-effect.

172_Elderly Tower
Matthew Abbott & Ryan Bloom
The Elderly Tower sets out to develop a new apartment typology with a strong connection to nature and community focusing on the lack of apartments for the elderly population. As the most popular eactivity of the elderly in Seoul is trekking on mountain trails, the building proposes to incorporate a “mountain path” into the design.

284_Mud Flat Tower
Lee Sae Lom, Park Jae Young, Kim Dong Chul & Jeong Ha Young
This project aims to lower greenhouse gas emissions and prevent climate change through functions of the marine bio industry such as producing bio-ethanol and bio-diesel fuel through seaweed, micro-algae, and living organisms of the ocean.

Ya-Ju Huang & Chih-Chien Peng
StemMetropolis project aims to be a representation of Taiwanese culture and the stem cell which adapts to the surrounding environment and hybrid life style. Horizontal roads and streets are turned vertically to become the structural system with lanes and secondary foundations. The space between is the "districts" utilized for programming.

331_Vertical Intervention
Umair Zia Malik
Walking across spread out roads, surrounded by several grand structures, one reaches the famed Gadaffi Stadium of Lahore. Its presence fills ones eye yet its existence is not discernable. People have been replaced by cars and along with sport, a spirit has abandoned the site. A vertical program is configured to tempt people back to the site.

393_Water Factory
Dong-Hyun Kim, Yoon-Soo Bae & Mo-Young Jung
Located at the Han River in Seoul where nature and the city coexist and the river flows widest and fastest, the Tower consists of two buildings which span the Jamsil Bridge and integrate with the old weirs. The tower visually purifies water and creates energy from the river below to raise awareness of the importance of water.

Kirill Isaev
As the skyscraper is an expression of the development of a nation and its citizens. It must provide a solution to a gamut of problems. Eurasia Skyscraper is a multi multi-functional building which attempts to solve the following five problems: ecology and energy savings; city and the available public realm; dissatisfaction with dwelling; and economy.

453_Synthesis Tower
Tomasz Jagielski & Jan Szymankiewicz
The tower aims to recapture the process of photosynthesis as a source of energy. The tower is constructed of state of the art material with a hidden device that absorbs steam from the air and transforms it into the renewable source of energy – hydrogen. Collected rainwater is periodically released to water the plants located on the façade.

489_Vertical Fiesta
Suruchi Modi & Ankur Modi
The design celebrates the spirit of Singapore by creating a vertical residential community bound together with aspects of festivity. Vertical Fiesta lifts the vibrancy, color and celebration of “Festivals” into the sky, embraces “Vertical Greenery” through fostering social interaction, and provides high density living with long term adaptability.

Achim Reifer & Olli Vuorinen
Skyscrapers have become as large as small cities yet still function like buildings. By using the time efficient elevator, people have no time to interact with and experience their environment. "Arrived" is a concept for a tall building with a re-imagined traffic system replacing elevators allowing occupants to experience the architectural environment.

515_Projecting Skygardens
Debarpita Mohapatra, Rahul R. Suralkar & Yi-Li Hsieh
Located in Singapore, Projecting Skygardens has three main objectives: create a vibrant mixed-use community bound together by a series of large, projecting public skygardens; orientate the skygardens at various heights and directions capturing different views; and lift the entire tower 30 meters above the ground to create a shaded public realm below.

Brian Vargo
HYPER- begins as an intensive investigation of the ebb and flow of free market forces that govern Building Tall. HYPER- suggests a systemic change and genetic mutation to the guiding principals of Building Tall. HYPER- breaks down to two extremes that typify the office tower: the “blank floor plan,” suitable for any number of occupants and the cyclicle change of tenants.

670_Kinetic Skyscraper
Pavlo Zabotin
The proposed structure implements a modular frame system which wraps the building, has cell grating, and provides an area for integral living. The tower is a system of multiple stories with a hydroponic function which allows ecologically clean produce to grow using less energy and providing a recreational area for occupants.

Temba Jauch
The base of the tower integrates with urban amenities surrounding the site as a permeable object absorbed into the existing public infrastructure. The outer skin is key to the environmental performance, structural concept, and visual expression of the tower. It forms a continuous tube of diagonal braces visually expressed on the surface.

686_Urban Ventilator
Chen Yi Fan, Li, Chi, Wang Pei Ju & Chou Wei Chun
Urban Ventilator acts as a “solar chimney” for Taipei city creating a low pressure zone in building to activate indoor ventilation. The building strengthens air circulation of the city and reduces urban heat island. The rotation of the plans along the height of building creates a spiral stair ecosystem which provides a biological continuity to the site.

699_Vertical Temple Square
Wang Hsuan Lin, Tzu-Yi Chuang & Shih-Ming Yeh
Vertical Temple Square
is a reinterpretation of the Tainan lifestyle which can be characterized in the public and private and private realm. The site becomes an intermediary space connecting the two realms and combining them with a community farm which becomes an area for socialization and food supply.

773_Iztapalapa Propagation
Chansoo Byeon & Justin Oh
Four massive concrete shafts rise out of a swarm of affordable prefabricated units that compose the tower's stature. Ongoing construction perpetually raises the skyscraper's pinnacle to new heights. Prefabricated wood frame modules are transported to the citadel where they are installed allowing for quick, inexpensive and ease of assembly.

819_Borneo Forest Tower
Salman Zahrawan, Adam Angkawijaya, Adhy Wangsaatmadja & Raden Grenaldi, Universitas Katolik Parahyangan
The design of the building directly refers to the Dayak tribal shield. This design is intended to raise the spirit of the Borneo local people and their self belonging to the forest. It also a symbol of defense and protection for the Borneo Forest.

851_701 East Ocean Boulevard
Michelle Houser
The project is located in downtown Long Beach, California on the corner of Ocean Boulevard and Alamitos Avenue. The urban context provides a range of activities and services to the residents of the development. The design of the building is driven by access to light, air, views, and outdoor space.

860_Twins Tower
Xin Jin
The chosen site is the heart of the South Korean capital which is also the cultural center, Jongno district. Due to the limited size of the site and built-up surrounding business area, the tower is predominantly office with some apartments, hotel, tourist shops, restaurant and conference facilities.