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There is a website for updates on the extension, http://www.taksinskytrain.com/ with pics available of track being laid, http://www.taksinskytrain.com/Gellary2.html.
Further pics on SSC show that foundation work on S9 and S10 stations is advancing. However, the month long disruption due to flooding - mainly issues of material supply and manpower - has made the opening deadline look near impossible.
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ONLY 2 out of 4 stations on Wongwian Yai - Bang Wah extension will be opened (Phonimit station and Ratchada-Ratchapruek station) on 5 Dec 2012 while the rest will be opened in 2013
http://www.dailynews.co.th/thailand/4745
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BMA giving a reason why they have to terminate at Ratchada-Ratchapruek station at the time being - waiting for MRTA to construct the elevated tracks along with the Interchange Building at Bang Wah Station so BTS could pinpoint the location for Phetkasem station of BTS to connection with Bang Wah Station of MRTA for the convenient interchange - and Rural Highway Dept (owner of Ratchapruek road) could allocate the space to construct Phetkasem station of BTS.
http://www.thairath.co.th/content/region/226242
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So much for integrated planning!!! Sounds like a good excuse for both the BMA and contractor to not complete the whole extension on time. That being said, anything is better than nothing....or yet another long BTS ext delay!Originally Posted by Wisarut
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Ratchada-Ratchapruek station is the station closest to Talad ploo station of Mahachai line of SRT ... better make a connection so they can interchange with Mahachai line ...
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The original plan was for an interchange with the Mahachai line at S11 which would be built just on the north side of Wuttakat rd given that the BTS viaduct curves where it passes over the Mahachai line. But that was when there was going to be 5 stations so I am unsure if the exact location of S11 has been changed?
An interchange from the new Mahachai line and S10 would be very long even with S10 being located on the west side of .
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Khun Mosdelta has given the idea about how to operate the train when S11 (Wutthakart) and S12 (Bang Wah) station has not been opened yet since S9 and S10 has no turnouts:
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Which begs the very obvious question, why not just install a turnout east of S10. In the scheme of things it won't add much cost but it will save a lot of hassle for pax and the operator.
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Some construction pics of S10 posted by Khun nutnano on SSC. Hard to see the contractor meeting the Dec dealine but we'll see how far they advance in the next 3 months.
Update การก่อสร้าง โครงการรถไฟฟ้าสายสีเขียว ส่วนต่อขยาย ตากสิน - บางหว้า
วันที่ 3 พฤษภาคม 2555
งานโครงสร้างสถานี S10 รัชดา - ราชพฤกษ์
งาน Track work ช่วงสถานี S9
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And some more pics of S10 posted by Khun Blue Oceans
S10วันนี้ 7/5/2555
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^^^
Here is the reason why the turnouts cannot be installed in those stations mentioned above:
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I don't see how any of the issues which Khun Nutnano mentions are a major obstacle to installing a turnout;
1) That it is constructed offsite and needs to be transported and lifted onsite is no different than other components which are constructed offsite and transported onsite,
2) So a small section of the line would have to be redesigned; sleepers removed, space created and appropriate signalling and electricals installed, and it will take up to 3 months. That fact should provide no impediment at all as there is just over 6 months until the ext opens.
3) I have yet to see any BTS station built on a curve, though it is no major problem it seems to be avoided in the construction of BTS stations. I had thought that S10 is being constructed on a straight alignment of the viaduct so it should be possible to install a turnout immediately past the station but need to check this. The line does then curve prior to passing over Wuttahakat rd. However, if there is a curve around the station it DOES NOT exclude building a turnout at the next available straight section of track even if it is 300m away.
None of these issues are major design, engineering nor project implementation issues which would negate the installation of a turnout after S10 station.
This is a line which is already suffering timetabling wise due to a single platform station. To introduce another design limitation will only lead to more potential timetabling and connectivity problems. A turnout will negate such added problems and provides operational flexibility for the future should there be problems shutting down the line past S11 (an accident etc). Some might suggest a shunting system will only operate until August 2013 but as we have seen deadlines tend to slide and this could end up being much longer.
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^^^
Probably, it is more like the case "Lost in translation" - I tried to translate the message of Khun Nunnano which has explained why we cannot install the turnouts on that S9-S10-S11 stations.
You think that it is None of these issues are major design? Nope, that's big and serious issue .... since the construction of elevated track has left very little margin for the turnouts ... You know the rest of the story don't you?
Last edited by Wisarut; 27-05-12 at 01:05 AM. Reason: Addendum
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Some of what you translated may well be "lost" but you clearly translated the 3 main reasons he gave. I can't question a qualified rail engineers knowledge.
It still seems not to be a major design issue when we are discussing 30-40m of track of what is a 2km+ ext. The time frame is there to avoid what will be a design and operational limitation until the rest of the extension if opened. That could be 8 months or 12 months or longer of operating a shunting system with all the operational and inconvenience that will bring.
As I suggested, there seems to be adequate space beyond the station as the curvature of the track immediately beyond the station appears not to be significant that it would exclude a turn out as shown in shown in Khun nutnano's own pic;
In Khun Nutnaos pic we can see western view of the station area. The viaduct/track clearly has sufficient space beyond the station area prior to a slight left curve before the major right curve beyond.
This aerial view shot (taken to the east or back towards S9) doesn't show the western end of where the station will be (the extreme left of the pic) not obviously the viaduct to the west towards S11ภาพมุมสูงS10 (ยืมมาจากภาพวิวทิศเหนือของCasa2 รัชดา-ราชพฤกษ์)
This poor aerial pic looking west does show the area where the station will be built (which is the area of the viaduct immediately adjacent to the on ramp in the top left of the pic)
I'll attempt to find a better aerial view shot of the area around S10.
Last edited by Yappofloyd; 30-05-12 at 04:07 PM.
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As I said, I think you translated the scope of Khun nutnano's reasons why it can't be done. Here is his reply from SSC for any who may be interested to read;
Also, a track diagram that he has done;
BTS Green Line Extension (Taksin - Bang Wa) - Track Aligment
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