This is a PowerPoint down for an edX course offered by Tsinghua University.

1. One cultural relic from my
home country
TsinghuaX
00690242_2x Historical Relic Treasures and Cultural
China: Part 2

2. The Sydney Harbour Bridge
As a young nation I am offering the Sydney Harbour Bridge
as a ‘cultural relic’ of Australia. Built in 1932 the bridge
enjoys iconic status in my home country.

3. Dimensions
Total length: 1,149 m (3,770 ft)
Width: 49 m (161 ft)
Height: 134 m (440 ft)
Longest span: 503 m (1,650 ft)
Clearance below: 49 m (161 ft)
at mid-span
Construction begin: 28 July
1923
Construction end: 19 January
1932
Opened: 19 March 1932

4. Arch
The arch is composed of two
28-panel arch trusses.
The total weight of the
steelwork of the bridge,
including the arch and
approach spans, is 52,800
tonnes.
The bridge is held together by
six million hand-driven rivets

5. Pylons
A pair of pylons stands at
the northern and southern
ends of the bridge. They
are constructed from
concrete and faced with
granite and are 89 m (292
ft) high.

6. Maintenance
The bridge requires constant inspections
and maintenance to keep it safe for public
use.
Painting is the major maintenance work.
The steelwork of the bridge that needs to
be painted is a combined 485,000 m2 (120
acres), the equivalent of sixty football fields.
Each coat on the bridge requires some
30,000 l (6,600 imp gal) of paint.
A special fast-drying paint is used, so that
any paint drops have dried before reaching
the vehicles or bridge surface

7. Uses
The bridge carries 8
lanes of traffic.
North/South railway
lines.
Pedestrian walkway on
the East side.
Cycleway on the west
side.

8. Interactivity
The bridge is a cultural relic
as it is used in many ways
to symbolise Australia.
As a relic there is ongoing
interactivity.
A bridge climb is a must do
activity for many visitors to
Sydney

9. Cultural Icon
Apart from its day to day
use of conveying traffic,
the bridge is the
centrepiece of many
cultural activities. A
prime example of this is
the New Year’s Eve
fireworks display.

10. Cultural Icon
In conclusion, the
Sydney Harbour
Bridge dominates
Sydney Harbour. It is
a symbol of our
nation and occupies
the hearts and minds
of all Australians.

11. Image Credits
1. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:Sydney_Harbour_Bridge_night.jpg
2. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:Early_construction,
_Sydney_Harbour_Bridge.jpg
3. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:
HMAS_Canberra_sailing_into_Sydney_Harbour_in_1930.jpg
4. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:Sydney_Harbour_Bridge_SE_Pylon,
_jjron,_02.12.2010.jpg
5. http://en.wikipedia.org/wiki/File:Sydney_Harbour_Bridge_DSC01595.JPG
6. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:To_Stop_the_Jumpers_(6619485209).jpg
7. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:
BridgeClimb_participants_on_Sydney_Harbour_Bridge.jpg
8. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:Sydney_new_years_2008-9.JPG
9. http://en.wikipedia.org/wiki/Sydney_Harbour_Bridge#mediaviewer/File:Sydney_Harbour_Bridge_from_the_air.
JPG