The Anonymous Widower

HS2 Reveals Dramatic Carbon Saving With Ambitious Modular Design For Thame Valley Viaduct

The title of this post, is the same as that of this press release on High Speed Two.

This is the first paragraph.

HS2 today revealed the final designs for the Thame Valley Viaduct and the pioneering pre-fabricated construction methods that will see the 880m long structure slotted together like a giant Lego set, cutting its carbon footprint by an estimated 66%.

This is one of the pictures released in this photoset.

This second picture shows a closer view of a pillar and the catenary.

It does appear in these two views that the catenary and the gantries that support it are more elegant than those that tend to be used on most electrification schemes at the present time.

These paragraphs describe how the design saved carbon emissions.

Applying lessons from recent high speed rail projects in Spain, the design team cut the amount of embedded carbon by simplifying the structure of the viaduct so that every major element can be made off site.

In a major step forward for viaduct design in the UK, the team opted for two wide ‘box girder’ beams per span instead of eight smaller beams – to simplify and speed up assembly.

The production of steel and concrete is a major contributor to carbon emissions, with the new lighter-weight structure expected to save 19,000 tonnes of embedded carbon in comparison to the previous design. That’s the same amount of carbon emitted by one person taking a flight from London to Edinburgh and back 70,000 times.

It would appear that saving weight and using less steel and concrete can save a lot of carbon emissions.

I once got a bonus at ICI because I saved ten metres on the height of a chemical plant. My boss said, I’d saved nearly a million. by using a mathematical model on an analogue computer to show that a vessel in the plant wasn’t needed and this eliminated a complete floor of the plant.

How much concrete and steel has been saved by High Speed Two on this viaduct, by making it more basset than Afghan hound?

Ever since I watched the building of Crossrail’s Custom House station, I have been in favour of off-site construction.

I wrote about it in An Express Station and am pleased to see it being used on High Speed Two.

April 8, 2022 Posted by | Design, Transport/Travel | , , , , , , | 1 Comment

GB Railfreight Names Locomotive For Ukraine

The title of this post is the same as that of this article on Railnews.

This is the first paragraph.

GB Railfreight has unveiled a Class 66 locomotive bearing the nameplates ‘Glory to Ukraine’, and painted in a special livery using the Ukrainan colours. GBRf said it ‘stands with Ukraine, and this newly painted locomotive honours the people affected by the conflict as they continue to courageously defend their homeland’.

Perhaps not in the same class as this article from the Guardian, which is entitled Lithuania Names Road Leading To Russian Embassy ‘Ukrainian Heroes’ Street’.

But every little bit helps!

April 8, 2022 Posted by | Transport/Travel | , , , , , , , | Leave a comment