Infrastructure and Energy Sector

Super Flanker

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Atul Setu : The Atal Setu is a cable-stayed bridge in Goa that runs between Panaji and Porvorim. It carries National Highway 66 over the tidal part of the Mandovi River. It is 5.1 kilometres long, making it the third longest cable-stayed bridge in India. Construction of this bridge began in 27 July 2014 and it was opened in 5 February 2019.

Some pictures of Atul Setu.

1. Drone view of the Bridge.
WhatsApp-Image-2021-08-07-at-3.53.50-PM.jpeg


2. Photo taken from the ground.
istockphoto-1213274178-612x612.jpg


3. Photo taken from the bridge lane.
istockphoto-1250502908-612x612.jpg
 
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Super Flanker

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Atul Setu : The Atal Setu is a cable-stayed bridge in Goa that runs between Panaji and Porvorim. It carries National Highway 66 over the tidal part of the Mandovi River. It is 5.1 kilometres long, making it the third longest cable-stayed bridge in India. Construction of this bridge began in 27 July 2014 and it was opened in 5 February 2019.

Some pictures of Atul Setu.

1. Drone view of the Bridge.
View attachment 156753

2. Photo taken from the ground.
View attachment 156755

3. Photo taken from the bridge lane.
View attachment 156756

Some videos of Atul Setu. For all those who are wondering why 2 wheelers are not allowed, it is because of the high speed winds. Also 3 wheelers are not allowed as well for the same reason. Let me tell you, I have myself travelled on Atul Setu with our family car and the winds are quite fast.
 

Suryavanshi

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Any reason as to why most Metros being constructed are elevated and not underground, for Mumbai it made sense but why other places?
 

Haldilal

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Any reason as to why most Metros being constructed are elevated and not underground, for Mumbai it made sense but why other places?
Ya'll Nibbiars cost underground cost a bomb. Instead if 150 crores for elevated per kms underground costs 300 crores.
 

Super Flanker

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Any reason as to why most Metros being constructed are elevated and not underground, for Mumbai it made sense but why other places?
Many reasons are there for why at times metros constructed are elevated and not underground.

For example building underground is more expensive as compared to elevated because to build underground, you have to dig a lot and at times due to the presence of hard rocks, boulders and the topography of the soil it is very hard to dig and hence it takes way more time as well, therefore it becomes very expensive too.

By the way do you know that Hyderabad Metro was at one point planned to be built Under ground? but due to unfavorable topography of the soil, L&T ruled out the idea of building it under ground.
 

Blademaster

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Many reasons are there for why at times metros constructed are elevated and not underground.

For example building underground is more expensive as compared to elevated because to build underground, you have to dig a lot and at times due to the presence of hard rocks, boulders and the topography of the soil it is very hard to dig and hence it takes way more time as well, therefore it becomes very expensive too.

By the way do you know that Hyderabad Metro was at one point planned to be built Under ground? but due to unfavorable topography of the soil, L&T ruled out the idea of building it under ground.
Good point. In some areas, the soil is not stable enough to permit underground metros. Overall, I prefer elevated systems because from a maintenance and repair standpoint, it is more economically feasible to maintain & repair elevated systems than underground.
 

Haldilal

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Good point. In some areas, the soil is not stable enough to permit underground metros. Overall, I prefer elevated systems because from a maintenance and repair standpoint, it is more economically feasible to maintain & repair elevated systems than underground.
Ya'll Nibbiars in Mumbai It's not a problem as most of the hard rock is within reach but cost was a factors.
 

ezsasa

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theoretically how much would it cost to build an aqueduct from brahmaputra to rajasthan and marathwada ?

might help in diverting flood waters from assam, to build biomass in desert soil and water retention capacity of rajasthan.

note : ignore diplomatic issues with bangladesh for this thought experiment, but rather from an engineering and ecological standpoint.

 

TopWatcher

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theoretically how much would it cost to build an aqueduct from brahmaputra to rajasthan and marathwada ?

might help in diverting flood waters from assam, to build biomass in desert soil and water retention capacity of rajasthan.

note : ignore diplomatic issues with bangladesh for this thought experiment, but rather from an engineering and ecological standpoint.

Why cant we setup water grid system like power. Just setup a pipe in form of + sign over India map. This will resolve water problem and will distribute equally. Am i thinking over engineering.
 

ezsasa

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Why cant we setup water grid system like power. Just setup a pipe in form of + sign over India map. This will resolve water problem and will distribute equally. Am i thinking over engineering.
river inter linking projects are part of similar thought process.
 

ezsasa

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I am not here talk about river linking process. I am talking about setup pipes rather than create streams.
pipes are also used, but mostly for transporting drinking water from reservoirs to cities.

for agricultural projects, pipes are used in lift irrigation projects, and gravity do rest of the work. Telangana kaleshwaram lift irrigation project being the latest mega project.
 

Suryavanshi

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theoretically how much would it cost to build an aqueduct from brahmaputra to rajasthan and marathwada ?

might help in diverting flood waters from assam, to build biomass in desert soil and water retention capacity of rajasthan.

note : ignore diplomatic issues with bangladesh for this thought experiment, but rather from an engineering and ecological standpoint.

The longest know aqueduct is 386 km long and that too needs to be lifted 4 times all thanks to having a terrain allowing them to do so.
 

ezsasa

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The longest know aqueduct is 386 km long and that too needs to be lifted 4 times all thanks to having a terrain allowing them to do so.
It's only a matter of time before north India starts having frequent dust storms from westerly direction, as vegetation depletes in pak. we don't have control over dust storms from saudi peninsula.

question also is whether is it worth investing in preventing/delaying the frequency of these dust storms?

1653473906603.png


 

SKC

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It's only a matter of time before north India starts having frequent dust storms from westerly direction, as vegetation depletes in pak. we don't have control over dust storms from saudi peninsula.

question also is whether is it worth investing in preventing/delaying the frequency of these dust storms?

View attachment 157429

We don't have any means to stop this level of dust migration from ME to Indian subcontinent.
But this does not harm India in big way
 

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