1. Pearl River Tower

2. Why was it necessary?
• 1000 years ago, Guangzhou was a key port.
• Guangzhou is hosting the Asian games so the
city is getting multi billion make-over.
• Reduce the amount of carbon dioxide emission
by 40-45% by 2020 as compared with 2005.
• Zero Emission Eco-friendly tower.
• Sun and wind to make its own energy.

3. What was the idea?
• Aero-dynamical structure.
• High-performance.
• Use wind energy to power.
• 4 holes for wind turbines.
• Double skin of hi-tech glass
inbuilt with solar panel

4. Challenges
• Typhoon.
• Earthquake.
• Building has to withstand natural forces.

5. Quality
• Every steel piece is subject to test.
• Pressure is applied and a computer records the
strength of steel.
• Ultra-sound test is used to detect cracks and
flaws.

6. Construction
• Nearly 8 tones of steel beams each.
• Nuts and Bolts- To prevent from earthquakes.
• Precision is very important to prevent errors.
• 18000 steel pieces manufactured.
• Steel pieces are curved by applying precise
amount of force.

7. Basement
• Footprint 3 times larger than actual building.
• 30 m Deep-Basement can house 800 vehicles.
• 10m Deep-Bedrock.
• 4 steel mega-columns with smaller columns to
support the building.
• Concrete core.
• Beams to make up the core wall.

8. Beams
• Crane totally relies on the instructions from
team mates.
• Coordinate to place the beam in correct
position.
• Bolted and welded into position.
• Release beam from the crane.

9. Challenge
• Positioning becomes difficult due to the curved
structure.
• Double layer surveying.
• Survey points on neighboring buildings.
• Set of points in tower’s perimeter and edges.
• Measure every piece that they install.

10. Hydraulic climbing Frame
• Makes work twice as fast.
• Climbing frame attached to each of the 4
columns.
• Pour concrete much easily.
• Vertical frame.
• Mold to hold concrete.
• Wooden platform.

11. Double skin glass facade
• Breathable skin.
• Regulate the temperature and radiation inside
the building.
• Two layers of glass with cavity in between.
• Deflects much of the sun spectrum away.
• Blocks more than 70% of heat.

12. Energy efficient lighting
• Energy efficient lights bulbs in beams.
• Curved ceiling panels reflects this light.
• Natural light is also reflected.
• 50% less fixtures.

13. Cooling system
• Chilled radiant ceilings.
• Run chilled water through metal ceiling panel.
• Air required is nearly 25% of what is
necessary in any other building.

14. Glass Panels
• 80,000 square meter of glass
• Typhoons can create problem.
• Curved structure need to be water tight.
• Tests are done to ensure it.

15. Wind current
• Building faces the direction of wind.
• Funnels through wind holes.
• Vertical turbines.
• Integrated within the building.
• Reduce the pressure of wind.

16. PV panels
• Photo-voltaic panels
• Convert light energy into electricity.
• REGEN drive- recycles up to 75% of elevator.
• Captures energy when full life travels up or
down and feed it back into building.

17. Fixing the panels
• Sealing the window frames.
• To prevent moisture from getting in.
• Precision is very important.
• Surveying is done to make sure panels are
installed properly.

18. Steel arches
• To be installed to form the dome.
• Placed properly to make sure it is positioned
properly.
• Glass façade might break so it had to be done
carefully.

19. Power source
• 15 micro turbines
• 3 Mega watts of energy during day.
• Return excess power to grid during night.
• Plan was dropped as returning power was not
possible.

20. Reference
• Refer the NATGEO video file sent to you for
videos.
• Wikipedia has a lot of information on this
topic

21. Thank you