Heritage Crossing by Coop Himmelb(l)au
“Two Iconic Structures Across Dubai Creek”, Dubai, UAE (2008)All images and information courtesy of Coop Himmelb(l)au – all images © Armin Hess, ISOCHROM. See full post for detailed credits. Copyright by desMena
Coop Himmelb(l)au have provided us with detailed information on their design for “Two Iconic Structures Across Dubai Creek”, Dubai, UAE (2008). The following text from the architects features “Heritage Crossing”- the second of the 2 structures.
Heritage Crossing – Hotel Bridge
Our proposal for Two Iconic Structures across Dubai Creek re-defines the concept of “Bridge” and thereby creates entirely new and unmistakable icons on the skyline. These new paradigmatic designs create never before experienced urban conditions connected to their locations on Dubai Creek. The new and memorable, iconographic structures offer unique functional, spatial and view conditions in landmark architectural forms that ensure the new bridges will become the most well known destinations in Dubai.
Urban design strategy
While the new Dubai Gateway defines the skyline along the waterfront the new Heritage Crossing becomes a distinctive urban icon in the heart of old Dubai. An urban pattern of souks and residential areas form old Dubai. Therefore the new bridge is not only a pedestrian link in between Old Bur Dubai Souk and Old Deira Souk, but also houses an exquisite small boutique hotel. Two entrance lobbies raised above ground level are located in the heads of the bridge. The pedestrian promenade and hotel are merged into one hybrid form crossing Dubai Creek. The new Heritage Crossing will improve the urban quality of the area for tourists and visitors and will become a new sight-seeing attraction.
The new Heritage Crossing is located in the heart of Old Dubai at the narrowest area of the creek and links Old Bur Dubai Souk and Old Deira Souk.
The new Heritage Crossing connects and integrates physically and visually with Old Bur Dubai Souk and Old Deira Souk. The new Heritage crossing will be a new sight-seeing attraction for tourists and an orientation point in the heart of Old Dubai. It will become one of the hippest places in Old Dubai and therefore we propose to integrate a boutique hotel floating above Dubai Creek. Not only the fantastic views and atmosphere of old Dubai makes the hotel special but also the strong relationship to the river guarantees a unique and unforgettable experience.
Access ways on both sides of the bridge are designed to ease and shorten movements. A navigation clearance of 16 m in between the river and the bridge structure is required and the main connection level is established at +18.00. Old Bur Dubai Souk and Old Deira Souk end in two public plazas partly covered by the new Heritage Crossing. Elevators and escalators on the plazas connect to the main bridge level linking the two souks.
The façade design is driven by the sustainability concept of generation of energy. The second skins of the façades are shaped by climate conditions and inner functions. These skins include photovoltaic cells to generate electricity and also cells to reduce excessive wind pressure, shade the sun and create multi media displays. They are fixed onto a standard metal construction system. The orientation of the individual panels will be generated and optimized by a computer driven scripting program. The density of these varies according to orientation and tilt angle, thus creating a visually interesting pattern in the building skins. Strategies employing the form of the building to assist natural ventilation together with the use of renewable energy sources (wind and solar power) assure an energy efficient design and reduce energy consumption and reliance on fossil fuel energy sources.
The main structural element of Bridge B consists of a tube that spans a distance of 130 m. At one end the bridge girder is rigidly connected to a cylinder with elliptical ground plan and a height of 35 m. This is to reduce vertical deflections. On the other side the bridge rests on a mega-column with a height of 22 m. Beyond this support the bridge cantilevers another 45 m.
Environmental, energy and building services concepts
Strategies employing the form of the bridges to assist natural ventilation together with the use of renewable energy sources (wind and solar power) assure an energy efficient design and reduce energy consumption and reliance on fossil fuel energy sources.
Excessive wind pressures are reduced via an additional outer metal façade construction, which is a sun blocker as well as a solar screen formed in a pattern optimized to orientation. The density of these varies according to orientation and tilt angle, thus creating a visually interesting pattern in the building skin as well as in the roof surface. Dubai enjoys some of the best climatic conditions in the world for the generation of electricity employing photovoltaic cells.
The bridge design also enables wind energy to be captured and employed via a wind generation plant to generate renewable electrical energy.
Alternative energy sources
Biomass or possibly gas fueled combined heat and power generators provide the building with both heat and electrical power. This solution has both ecological and economic advantages compared to more conventional alternatives (c. 60% less CO2 emissions), and also provides a major advantage with regard to security of supply. In warm weather the heat is used to drive an absorption chiller that supplies chilled water to cool the building.
Plant rooms for technical equipment are connected via vertical shafts and risers to the individual floors to provide an efficient technical infrastructure.
PROJECT DATA (01/2009)
PLANNING COOP HIMMELB(L)AU
LOCAL PARTNER Woods Bagot, Dubai, UAE
BUILDING HEIGHT 51 m
COMPETITION 12/2008 (3rd prize)
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