The Sundial Cities When Astronomy and Surveying meet ... fileThe Sundial Cities When Astronomy and...
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FIG Congress 2010 Facing the Challenges – Building the Capacity Sydney, Australia, 11‐16 April 2010 1 Joël van Cranenbroeck The Sundial Cities When Astronomy and Surveying meet together … Joël van Cranenbroeck, Lecturer of the Siberian State Academy of Geodesy Novosibirsk, Russian Federation 2 Joël van Cranenbroeck
Transcript of The Sundial Cities When Astronomy and Surveying meet ... fileThe Sundial Cities When Astronomy and...
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 1
Joël van Cranenbroeck
The Sundial Cities When Astronomy and Surveying meet together …
Joël van Cranenbroeck, Lecturer of the Siberian State Academy of Geodesy
Novosibirsk, Russian Federation
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Joël van Cranenbroeck
Motivation The importance of the sun and the moon …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 2
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Stonehenge is an astronomical calendar and a sundial to forecast the season’s …
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Jaïpur city in India has many Sundials and even they claims the biggest in the world …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 3
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Design 500 years ago with an outstanding accuracy … Still working ! Only need sun …
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FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 4
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Joël van Cranenbroeck
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 5
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Joël van Cranenbroeck
Sun position at Sydney the 14th April 2010
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 6
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Joël van Cranenbroeck
To use the Sun to orient the GNSS Antenna to the North – Reference Station installation
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 7
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RTK GNSS pole shadow for radiations !
One of the features on board GNSS RTK !
When you can’t get enough satellites eg corner of building or under a tree, you can take GPS observations out in the open area then you can use the shadow of the pole.
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Joël van Cranenbroeck
The University of Athens released a thesis about the use of Total Station and GPS …
The University of Athens released a thesis about using a Total Station and a PC synchronised in time with GPS to evaluate the accuracy of astronomical methods of determination Azimuth of directions …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 8
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Urban planners and architects are using the Sun Ephemeris to design new buildings …
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In Hong Kong, penalties and indemnities are paid when a new building is shading existing ones …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 9
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Joël van Cranenbroeck
From Sun Azimuth and Elevation to design Sundial Let’s reverse the process …
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FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 10
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Building’s shade at the University of New South Wales in Sydney, Australia …
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Sundial can be part of an architectural project …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 11
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The Sundial Bridge in the United States Designed by Calatrava, spanish inspired architect
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The “Solar Vessel” in the south of France Along the highway from Montpellier to Orange …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 12
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Why not create a new urban concept ? The Sundial Cities … Time and Space …
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The Burj Khalifa (Dubai) is not only the highest building in the world up to 850 meters and 160
floors …but the largest Sundial !
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 13
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Moslem Prayer Times
Gnomon
Noon Zuhr Asr
Defined by altitude of sun determined by shadow lengths : Zuhr = Noon + ¼ gnomon height
Asr = Noon + gnomon height to Noon + 2 gnomon heights
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Muslim Prayer Timelines
Istanbul: Latitude 41º N Horizontal with Vertical Gnomon
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 14
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FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 15
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I have the feeling that a new architecture wave can be inspired by playing with the sun shade.
Today I don’t know what it will be but I am sure that space must integrated time through shade.
Joël van Cranenbroeck
