the sundial cities when astronomy and surveying … · the sundial cities when astronomy and...
TRANSCRIPT
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
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
3
Joël van Cranenbroeck
Stonehenge is an astronomical calendar and a sundial to forecast the season’s …
4
Joël van Cranenbroeck
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
5
Joël van Cranenbroeck
Design 500 years ago with an outstanding accuracy … Still working ! Only need sun …
6
Joël van Cranenbroeck
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 4
7
Joël van Cranenbroeck
8
Joël van Cranenbroeck
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 5
9
Joël van Cranenbroeck
10
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
11
Joël van Cranenbroeck
12
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
13
Joël van Cranenbroeck
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.
14
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
15
Joël van Cranenbroeck
Urban planners and architects are using the Sun Ephemeris to design new buildings …
16
Joël van Cranenbroeck
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
17
Joël van Cranenbroeck
From Sun Azimuth and Elevation to design Sundial Let’s reverse the process …
18
Joël van Cranenbroeck
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 10
19
Joël van Cranenbroeck
Building’s shade at the University of New South Wales in Sydney, Australia …
20
Joël van Cranenbroeck
Sundial can be part of an architectural project …
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 11
21
Joël van Cranenbroeck
The Sundial Bridge in the United States Designed by Calatrava, spanish inspired architect
22
Joël van Cranenbroeck
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
23
Joël van Cranenbroeck
Why not create a new urban concept ? The Sundial Cities … Time and Space …
24
Joël van Cranenbroeck
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
25
Joël van Cranenbroeck
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
26
Joël van Cranenbroeck
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
27
Joël van Cranenbroeck
28
Joël van Cranenbroeck
FIG Congress 2010
Facing the Challenges – Building the Capacity
Sydney, Australia, 11‐16 April 2010 15
29
Joël van Cranenbroeck
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