rooster59 Posted July 13, 2019 Share Posted July 13, 2019 22 Skytrain stations checked after slab-fall By The Nation The Bangkok Mass Transit System (BTSC) on Friday night announced maintenance work was underway at 22 BTS Skytrain stations after a concrete slab fell from a station onto the road, almost hitting passers-by. BTSC executive director Surapong Laoha-Unya announced that the BTSC prioritised the safety of the public and passengers so had ordered special maintenance at all 22 main stations on its green line – the Sukhumvit route from Morchit to On Nut and the Silom route from National Stadium to Surasak. The order was issued after a concrete slab fell from the Ari station on to the road below, narrowly missing vehicles and pedestrians on Friday. Surapong said the BTSC has scheduled maintenance services at all stations but the incident had prompted extra checks of the structure outside of stations. The Skytrain Facebook page announced 96 engineers and 16 cranes are carrying out the checks and maintenance over three days as follows: – From 10pm on Friday to 5am Saturday, the seven stations of Morchit, Saphan Kwai, Sanam Pao, Victory Monument, Phaya Thai, Ratchathewi and National Stadium were checked. – From 10pm on Saturday to 5am Sunday, the seven stations of Ekkamai, Phra Khanong, On Nut, Surasak, Chong Nonsee, Saladaeng and Ratchadamri will be checked. – From 10pm Sunday to 5am Monday, the eight stations of Siam, Chid Lom, Ploenchit, Nana, Asok, Phrom Phong, Thong Lor and Taksin Bridge will be checked. Source: https://www.nationthailand.com/news/30372929 -- © Copyright The Nation Thailand 2019-07-14 Follow Thaivisa on LINE for breaking Thailand news and visa inf Link to comment Share on other sites More sharing options...
asiaexpat Posted July 14, 2019 Share Posted July 14, 2019 The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. Link to comment Share on other sites More sharing options...
P Funk Posted July 14, 2019 Share Posted July 14, 2019 51 minutes ago, asiaexpat said: The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. Well, if you don’t like the “Thai Way”, then hit the highway... along with the falling concrete slabs. Link to comment Share on other sites More sharing options...
Epidemiologist Dave Posted July 14, 2019 Share Posted July 14, 2019 My late father was a concrete engineer and he was always concerned about the number of bridges and overhead rail tracks being built using reinforced concrete. Even if the concrete is made with quality ingredients and the reinforcing rods are correctly sized for the structure, the life span will be around 50 years but ONLY if comprehensive maintenance is carried out. How are the Thai authorities going to deal with their 50 year time bomb? Probably by putting their heads in the cheap sand used for the concrete. Link to comment Share on other sites More sharing options...
RichardColeman Posted July 14, 2019 Share Posted July 14, 2019 33 minutes ago, DavetheGreek said: How are the Thai authorities going to deal with their 50 year time bomb? Probably by putting their heads in the cheap sand used for the concrete. Not worry, the back up plan is already in place Link to comment Share on other sites More sharing options...
bkkcanuck8 Posted July 14, 2019 Share Posted July 14, 2019 2 hours ago, asiaexpat said: The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. I have seen the same thing happen in several western countries, highways, overpasses, etc. Link to comment Share on other sites More sharing options...
ThaiBunny Posted July 14, 2019 Share Posted July 14, 2019 Just now, bkkcanuck8 said: I have seen the same thing happen in several western countries, highways, overpasses, etc. That makes it so much better. Thailand is as good as First World countries Link to comment Share on other sites More sharing options...
hotchilli Posted July 14, 2019 Share Posted July 14, 2019 3 hours ago, asiaexpat said: The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. Which just about goes for anything Thai... just wait for the first major collapse one day ! Link to comment Share on other sites More sharing options...
dddave Posted July 14, 2019 Share Posted July 14, 2019 4 hours ago, asiaexpat said: The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. The Thai way, huh? Guess you don't read much. Bridge collapse in Italy: poor maintenance. Autobhan collapse in Germany: poor maintenance. Bridge collapse in Minnesota: poor maintenance. Japan, the same. New Zealand, Australia, on and on. Your contempt for Thailand suggests maybe it's time for you to return to whatever perfect paradise you came from. Link to comment Share on other sites More sharing options...
Just Weird Posted July 14, 2019 Share Posted July 14, 2019 4 hours ago, asiaexpat said: The Thai way, let something fall apart before doing any work. Preventive inspection/maintenance is a waste of time so the story goes. "Surapong said the BTSC has scheduled maintenance services at all stations but the incident had prompted extra checks of the structure outside of stations". Reading the OP and being able to understand what you are reading is an interesting story also. Link to comment Share on other sites More sharing options...
rkidlad Posted July 14, 2019 Share Posted July 14, 2019 2 hours ago, Just Weird said: "Surapong said the BTSC has scheduled maintenance services at all stations but the incident had prompted extra checks of the structure outside of stations". Reading the OP and being able to understand what you are reading is an interesting story also. If that’s true, that’s even more worrying. A slab just fell and could have killed someone. Time to fire someone. Link to comment Share on other sites More sharing options...
Reigntax Posted July 14, 2019 Share Posted July 14, 2019 8 hours ago, DavetheGreek said: My late father was a concrete engineer and he was always concerned about the number of bridges and overhead rail tracks being built using reinforced concrete. Even if the concrete is made with quality ingredients and the reinforcing rods are correctly sized for the structure, the life span will be around 50 years but ONLY if comprehensive maintenance is carried out. How are the Thai authorities going to deal with their 50 year time bomb? Probably by putting their heads in the cheap sand used for the concrete. There is no 50 year time bomb. That is a complete exaggeration from someone who does not understand the material properties of reinforced concrete and engineering. Reinforced concrete is probably the best and safest building material available. It can be manufactured in a mixture to suit any application, be moulded into almost any shape, t's performance accurately predicted any even if subject to loads way beyond its original design, a structural element will still remain in place. In such cases, clear evidence will be visible well before ultimate failure occurs, If by defination we agree failure as the point beyond an elements elastic limit. Before a structural element permanently deforms, it would have been subject to a load well beyond design and greater than actual design plus designed safety factors. We are not talking about small percentages, we are talking about loads upwards of 5 times the design load where a reinforced concrete structure will still remain servicable. The reasons why are very simple. Most spans are designed on deflection limits and not as beams capable of supporting a particular load. Deflection limit design on large spans is many times stronger than beam design suitable for any given load. Panels similar to the recent one are nothing more than cosmetic panels. The requirement being poor design, an after thought, a maintenance issue and serve no purposes other than visual appearance to the structure overall. Link to comment Share on other sites More sharing options...
atyclb Posted July 14, 2019 Share Posted July 14, 2019 6 hours ago, Reigntax said: There is no 50 year time bomb. That is a complete exaggeration from someone who does not understand the material properties of reinforced concrete and engineering. Reinforced concrete is probably the best and safest building material available. It can be manufactured in a mixture to suit any application, be moulded into almost any shape, t's performance accurately predicted any even if subject to loads way beyond its original design, a structural element will still remain in place. In such cases, clear evidence will be visible well before ultimate failure occurs, If by defination we agree failure as the point beyond an elements elastic limit. Before a structural element permanently deforms, it would have been subject to a load well beyond design and greater than actual design plus designed safety factors. We are not talking about small percentages, we are talking about loads upwards of 5 times the design load where a reinforced concrete structure will still remain servicable. The reasons why are very simple. Most spans are designed on deflection limits and not as beams capable of supporting a particular load. Deflection limit design on large spans is many times stronger than beam design suitable for any given load. Panels similar to the recent one are nothing more than cosmetic panels. The requirement being poor design, an after thought, a maintenance issue and serve no purposes other than visual appearance to the structure overall. therefore the cosmetic panel is non load bearing and should not have fallen out. i wonder if they used an already proven design to secure it in place or came up with their own? Link to comment Share on other sites More sharing options...
Tropposurfer Posted July 14, 2019 Share Posted July 14, 2019 8 hours ago, Reigntax said: There is no 50 year time bomb. That is a complete exaggeration from someone who does not understand the material properties of reinforced concrete and engineering. Reinforced concrete is probably the best and safest building material available. It can be manufactured in a mixture to suit any application, be moulded into almost any shape, t's performance accurately predicted any even if subject to loads way beyond its original design, a structural element will still remain in place. In such cases, clear evidence will be visible well before ultimate failure occurs, If by defination we agree failure as the point beyond an elements elastic limit. Before a structural element permanently deforms, it would have been subject to a load well beyond design and greater than actual design plus designed safety factors. We are not talking about small percentages, we are talking about loads upwards of 5 times the design load where a reinforced concrete structure will still remain servicable. The reasons why are very simple. Most spans are designed on deflection limits and not as beams capable of supporting a particular load. Deflection limit design on large spans is many times stronger than beam design suitable for any given load. Panels similar to the recent one are nothing more than cosmetic panels. The requirement being poor design, an after thought, a maintenance issue and serve no purposes other than visual appearance to the structure overall. Candidate for sanest post of the month ... thank you ???? Link to comment Share on other sites More sharing options...
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