Port Tunnel

Postby kefu » Wed Dec 10, 2003 7:38 pm

Everybody makes out that the underground system in Paris involves stepping off one train, walking about five steps, and getting on another. Having lived in Paris, this is absolutely not the case.
The distance you have to travel (ie walk underground) in big stations like Chatelet-Les Halles, Montparnesse, Etoile is the equivalent of walking from Stephen's Green to College Green. It includes staircases etc and with luggage etc can be an absolute nightmare. I won't even mention the Tube, because it's worse again.
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Postby niall murphy » Wed Dec 10, 2003 8:48 pm

Rory W... My point was based on peak times. You dont seem too knowledgable on the subject even though you're a commuter. I'm also a commuter and by just picking a random station on the DART on the irish rail website I found that there are 18 trains from Killester to Connolly between 7:08am and 10:12am.

This amounts to 6trains per hour in this direction. this is a frequency average of 1 every ten minutes.

Now the LUAS advertisement boards state there will be a tram every 5mins at peak time.This means there will be 12 trams per hour. Where you got your 3min frequency I dont know, but its wishful thinking

Now with simple maths this gives the Luas a frequency of twice that of the DART.

Now even going by your assumption that a 6 carriage DART carries 800 people that gives

800x6 = 4800 for the DART over this specific period of time

250x12 = 3000 for the Luas over the same time period.

Also if some people at irish rail got the finger out and introduced some sort of clockface timetable for the DART you could have better service if additional rolling stock was made available.
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Postby PVC King » Wed Dec 10, 2003 11:07 pm

The stop/Station at the green is a red Herring if anyone analysed the port tunnel's construction. As the construction of the line would be underground tunnelling would commence in Spencer Dock and Finish in Heuston (most convient points close to)
The ducts for people could be commenced from below the surface in the same way that the ventilation for the port tunnel is being done.

The only effect at the Green would be the lift/escalator shfts bringing people and services up and down. Solution move the LUAS tracks back 50-200 Metres whatever is required for the overground station. Which would be very little.

Regarding super cube trailors, there are two points, firstly a lot of freight capacity is limited by the weight limits of c40tonnes. At the higher end shipments are getting smaller as supply chain management practices dictate logistics strategies. This is particularly relevent
to Silicon/Viagra Ireland.

The second point is volume limit 4.65 metres equates to about 3m of usable space, therefore 0.5 metres only gives another 16.66% of space for Tescos toilet rolls.

Forget Jimmy Quinn look at Ken Whelan of the Irish Exporters Assciation, he spent a lot more time on the dismantling of Rail Freight facilities at spencer dock and pushing Aer Rianta to make their first investment in Air Cargo at Dublin Airport in Dublin Airport since the 1980's ( A wire Fence)

Air Freight is the future
PVC King


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