Subsidence, Low Level Of Bangkok Hinder Drainage

[Lite Beer]

Subsidence, low level of Bangkok hinder drainage

Jutharat Thipnampha

The Nation on Sunday

Bangkok not only has problems with its drainage system, it also has ground subsidence, which causes land to be bowl-shaped in many areas of the capital. This caused flooding problems when it rained heavily and made drainage more difficult, a city official said recently.

Sansern Ruangrit, an engineer at the Department of Drainage and Sewerage at Bangkok Metropolitan Administration (BMA), said the capital was lower than sea level and had bowl-shaped land.

A road survey by the BMA's Public Works Department found that on average roads in Bangkok were only about one metre higher than sea level. So, when it rained heavily - more than 60 millimetres in an hour - or when the level of the Chao Phraya River was higher than two metres, Bangkokians could not avoid flooding.

Sansern said Bangkok and its neighbouring provinces were located in the Chao Phraya delta with land between 0 metres and +2 metres above mean sea level (AMSL), which was shown on four zones of a map.

The first zone was on Bangkok's Thon Buri side from Borommarat-chonnani to Rama 2 roads parallel to Kanchanaphisek road, the second was parallel to Phaholyothin Road, the third was parallel to Klong Song Canal and in Hathairat, Min Buri and Nong Chok areas, and the fourth was Bangkok areas.

"Bangkok has bowl-shaped land. Its estuary areas subside one to two centimetres per year," he said.

Phetkasem road is 1.30 AMSL, Sri Ayutthaya road is 0.06 AMSL while Suan Pakkad Palace was 0.13 AMSL, according to a record in 2009.

"We have to use pumps to pump out water from low level areas. A system to release water through a lot of canals in the capital could also help," said Sansern.

He said each residence should have "monkey cheek" areas to hold floodwater in its compound and release floodwater after it stops raining instead of get rid of flood-water from residences while public areas were still flooded.

Apart from releasing floodwater along the canals in areas west and east of Bangkok, the BMA planned to increase water release channels around Bangkok. Water pushing machines were also used to accelerate the release of floodwater into canals, he said.

-- The Nation 2012-10-14

[Thai at Heart]

B+.

Must do better. Tell us something anyone with half a brain doesn't know already.

[zakk9]

This will of course all be solved with the water pushing machines. Being designed in Thailand, they are not hampered by foreign laws and principles like "Newton's law of universal gravitation" (Newton is not my father etc., etc.) so they can push water uphill as well as downhill

Would Newton even get a visa to Thailand after writing a law that is clearly designed to sabotage the Thai principle of building towns and cities below the water level? Doubtfully.

[MEL1]

This will of course all be solved with the water pushing machines.

Yes, of course. If the water pushing works - great! Push the water into any bowl outside of the BKK bowl !!

BKK - Outside the 'hub of bowling alleys' ...

-mel.

[noitom]

They need a flusher. The 'flushing bowl." Bangkok - the flushing bowl.

[TheKrayTriplet]

This will of course all be solved with the water pushing machines. Being designed in Thailand, they are not hampered by foreign laws and principles like "Newton's law of universal gravitation" (Newton is not my father etc., etc.) so they can push water uphill as well as downhill

Would Newton even get a visa to Thailand after writing a law that is clearly designed to sabotage the Thai principle of building towns and cities below the water level? Doubtfully.

You might want to read this, I can't believe you haven't heard of pumps that push water?

http://www.newton.dep.anl.gov/askasci/eng99/eng99574.htm

[zakk9]

This will of course all be solved with the water pushing machines. Being designed in Thailand, they are not hampered by foreign laws and principles like "Newton's law of universal gravitation" (Newton is not my father etc., etc.) so they can push water uphill as well as downhill

Would Newton even get a visa to Thailand after writing a law that is clearly designed to sabotage the Thai principle of building towns and cities below the water level? Doubtfully.

You might want to read this, I can't believe you haven't heard of pumps that push water?

http://www.newton.de...99/eng99574.htm

Ummm... yes, that's the principle of most pumps nowadays. But that has nothing to do with the Bangkok water pushers, which are "open pumps" pushing water within the same canal or basin, which is more or less like pumping water from one end of the bathtub to the other, using a propeller. But then again, since Newton's law probably doesn't apply to Thailand, there is no problem, is there?

[Ricardo]

This will come as a fearful shock to the Science Minister, who has absolute faith in water-pushers and boat-propellers, as the certain solution to the problem !

Water doesn't flow uphill ? Well who would ever have guessed that !

But worry not, keen poo-yai brains are doubtless currently feverishy engaged in considering, how to make money, from this newly-discovered fact !

[Thai at Heart]

This will come as a fearful shock to the Science Minister, who has absolute faith in water-pushers and boat-propellers, as the certain solution to the problem !

Water doesn't flow uphill ? Well who would ever have guessed that !

But worry not, keen poo-yai brains are doubtless currently feverishy engaged in considering, how to make money, from this newly-discovered fact !

Now that has been made into a precise science in Thailand

[hellodolly]

This will come as a fearful shock to the Science Minister, who has absolute faith in water-pushers and boat-propellers, as the certain solution to the problem !

Water doesn't flow uphill ? Well who would ever have guessed that !

But worry not, keen poo-yai brains are doubtless currently feverishy engaged in considering, how to make money, from this newly-discovered fact !

Thailand has solved their water management by signing an agreement with Australia to share their water management knowledge.

Word on the street was Australia was excited to learn that water could flow up hill.

[h90]

This will of course all be solved with the water pushing machines. Being designed in Thailand, they are not hampered by foreign laws and principles like "Newton's law of universal gravitation" (Newton is not my father etc., etc.) so they can push water uphill as well as downhill

Would Newton even get a visa to Thailand after writing a law that is clearly designed to sabotage the Thai principle of building towns and cities below the water level? Doubtfully.

As always the foreigner are causing problems....

[rakman]

"We have to use pumps to pump out water from low level areas. [ true ] A system to release water through a lot of canals in the capital could also help," said Sansern.

Are these elevated canals? Pipes or tunnels might work better.

Get a huge TBM to build some catch tunnels to drain the water off the streets, then use pumps to dump it into the river or other suitable drainage system.

http://www.flickr.com/photos/wsdot/7895874144/in/set-72157628749053321/

Run this puppy for some 10's of km and you'd have a huge underground water storage.