Peter - I think it's safe to say that HS2 will run beneath the realigned Harvil Road. A 200mph train passing over it would end up somewhere on the A40, causing even more delays.
Just for reference it takes a 10 mile long ramp to climb over. And the 10 miles on the other side to get back down again due to the speed. So it will always be roads that are realigned to keep the track as level as possible.
Thank you Peter. Very nice HS2 Colne Valley Viaduct curve views and scenic details (and we can hear the workings). Eventually when HS2 gets running it will be exciting, and we will know how it came together.
Thanks Peter, about the segments - because of the variable curve every segment is different! So making the whole thing fit together is an outstanding achievement.
Yes it's great, isn't it! My incredulous and some would say, stupid, jokes are an attempt to lighten the mood. Hopefully any HS2 people who see the vids, realise this! Pity I was too young to help NASA with the moon landings!
According to the plan/profile map showing the HS2 route, Harvill Road will go over the HS2 railway on an overbridge. The road also goes over the Chiltern Railway line similarly on an overbridge. I think I saw something about this road having already been diverted over the new structures?? Regarding the centrifugal force from transiting the curve, I expect the tracks will have a slight "cant" or bank which will help to offset such effects. Even "ordinary" railways running at a max of around 100 odd MPH have the rail on the outside of curves slightly raised to alleviate the effects of centrifugal force.
I think the SMB references Sarens who is a crane builder so that might be the manufacturer. The curve on the viaduct will be impressive when it is working. I will go take a ride on it to go over this part just to see how it rides.
Hi Peter, a lovely video and a great spot to observe 'Dominique' Thanks, as for your list of questions rather than, IJDK (I just don't Know) I can confirm that the yellow lifting beam could be marked SLB.2 = Single Leg Brace number 2, for safety ID proposes. Also, Align JV is an unincorporated joint venture between Bouygues Travaux Publics SAS, VolkerFitzpatrick Limited, and Sir Robert McAlpine Limited. I am sure Sir Robert McAlpine or 'Concrete Bob' as he was known would have been so proud of an association with the Cole Valley Vauduct as his firm built the 'Glenfinnan Viaduct' of 'Harry Potter fame'......
When HS2 is finnished most of it will be hardly noticeable when nature regreens itself arround the line, the biggest scar and whte elephant is the M40 motorway made up of 6 lanes, 2 hard shoulders and central carriageway plus earthworks either side which makes the M40 6 times wider than the HS2 line, I bet you did not complain about that.
@@philgillman3869 Oh we are tetchy are we not, I am afraid to tell you the truth that once the 2 track line is complete exept for the bridge crossing it will blend into the country side a lot better than the M40, also I live n Birmingham a mile from the HS2 works and it does not bother me one bit.
To prevent any stiletto wearing, drunk, geriatric politicians falling flat on their face, while staggering to the toilet, and then suing, the train won't run at a speed that will exert any more than 0.15 Newton's of centrifugal force on a tax payer funded rider, their beverage, or bladder. So whatever is the minimum radius of the tightest curved section (in meters), will set the maximum line speed in m/s = (9.8 * 0.15 * radius)^0.5
![This is the only bridge to a massive island. It's falling apart. [LH]](http://i.ytimg.com/vi/os_fYLgiAM8/mqdefault.jpg)
Peter - I think it's safe to say that HS2 will run beneath the realigned Harvil Road. A 200mph train passing over it would end up somewhere on the A40, causing even more delays.
Ha ha! Hilarious! We apologize to customers who weren't anticipating taking the A40 to Birmingham, but life is full of surprises!
Just for reference it takes a 10 mile long ramp to climb over. And the 10 miles on the other side to get back down again due to the speed. So it will always be roads that are realigned to keep the track as level as possible.
Thank you Peter. Very nice HS2 Colne Valley Viaduct curve views and scenic details (and we can hear the workings).
Eventually when HS2 gets running it will be exciting, and we will know how it came together.
Thanks Peter, about the segments - because of the variable curve every segment is different! So making the whole thing fit together is an outstanding achievement.
Setting the V-piers accordingly is equally mind boggling.
Yes it's great, isn't it! My incredulous and some would say, stupid, jokes are an attempt to lighten the mood. Hopefully any HS2 people who see the vids, realise this! Pity I was too young to help NASA with the moon landings!
According to the plan/profile map showing the HS2 route, Harvill Road will go over the HS2 railway on an overbridge. The road also goes over the Chiltern Railway line similarly on an overbridge. I think I saw something about this road having already been diverted over the new structures?? Regarding the centrifugal force from transiting the curve, I expect the tracks will have a slight "cant" or bank which will help to offset such effects. Even "ordinary" railways running at a max of around 100 odd MPH have the rail on the outside of curves slightly raised to alleviate the effects of centrifugal force.
They call that cant 'superelevation'. It is applied from model railways all the way up to 200mph high speed lines.
Yesssss! I thought as much! I could've been an engineer!
Great to see progress
I think the SMB references Sarens who is a crane builder so that might be the manufacturer. The curve on the viaduct will be impressive when it is working. I will go take a ride on it to go over this part just to see how it rides.
Hold on to the walls of the train!
Hi Peter, a lovely video and a great spot to observe 'Dominique' Thanks, as for your list of questions rather than, IJDK (I just don't Know)
I can confirm that the yellow lifting beam could be marked SLB.2 = Single Leg Brace number 2, for safety ID proposes.
Also, Align JV is an unincorporated joint venture between Bouygues Travaux Publics SAS, VolkerFitzpatrick Limited, and Sir Robert McAlpine Limited. I am sure Sir Robert McAlpine or 'Concrete Bob' as he was known would have been so proud of an association with the Cole Valley Vauduct as his firm built the 'Glenfinnan Viaduct' of 'Harry Potter fame'......
Absolutely wonderful! Many thanks, Steve!!
It joins with the Copthall Tunnel.
White elephant rampaging through the previously beautiful lakes and countryside of Harefield and Denham & everywhere else along the route.
When HS2 is finnished most of it will be hardly noticeable when nature regreens itself arround the line, the biggest scar and whte elephant is the M40 motorway made up of 6 lanes, 2 hard shoulders and central carriageway plus earthworks either side which makes the M40 6 times wider than the HS2 line, I bet you did not complain about that.
You obvs don’t live in Harefield. Nature can’t reclaim where it cuts through our lakes. & don’t presume to tell me what I do or do not complain about.
@@philgillman3869 Oh we are tetchy are we not, I am afraid to tell you the truth that once the 2 track line is complete exept for the bridge crossing it will blend into the country side a lot better than the M40, also I live n Birmingham a mile from the HS2 works and it does not bother me one bit.
To prevent any stiletto wearing, drunk, geriatric politicians falling flat on their face, while staggering to the toilet, and then suing, the train won't run at a speed that will exert any more than 0.15 Newton's of centrifugal force on a tax payer funded rider, their beverage, or bladder. So whatever is the minimum radius of the tightest curved section (in meters), will set the maximum line speed in m/s = (9.8 * 0.15 * radius)^0.5
Andrew! Many thanks! Love it!