Daily Telegraph: 150 fascinating Tube facts
 

In message , at 11:24:03 on
Tue, 15 Jan 2013, David Walters remarked:
davros.org lists Marble Arch as having a fixed stairway.

That confirms my recollection (a stairway alongside one of the
escalators, but not at the same angle so it's succession of half a dozen
steps, landing etc)

Is that a safety thing? If you slip you will stop at the next landing
rather than tumbling all the way to the bottom. It seems rare to find
very long unbroken flights of stairs.

It's because the natural 'angle' of escalators and stairs are different,
due to the different step dimensions. The landings are needed to keep
the two in synch.

Maybe the list you need is the inverse of the "only escalator" one
(assuming lifts are either OK, or always accompanied by stairs).

Lifts aren't okay though, I want to be able to find routes that don't
involve mechanical aids between the platform and street.

OK, I thought it was about carrying dogs (which ought to be able to sit
in a lift), but thanks for clarifying the requirement.
--
Roland Perry

Daily Telegraph: 150 fascinating Tube facts
 

In article ,
David Walters wrote:
Is that a safety thing? If you slip you will stop at the next landing
rather than tumbling all the way to the bottom. It seems rare to find
very long unbroken flights of stairs.

I think it's more of a gradient thing - comfortable escalators have
a lower gradient than comfortable stairs. After all, falling that
distance down an escalator is going to hurt quite a lot, and LuL
does have rather long escalators.

--
Mike Bristow

Daily Telegraph: 150 fascinating Tube facts
 

On 2013\01\15 11:53, Roland Perry wrote:
In message , at 11:24:03 on
Tue, 15 Jan 2013, David Walters remarked:
davros.org lists Marble Arch as having a fixed stairway.

That confirms my recollection (a stairway alongside one of the
escalators, but not at the same angle so it's succession of half a dozen
steps, landing etc)

Is that a safety thing? If you slip you will stop at the next landing
rather than tumbling all the way to the bottom. It seems rare to find
very long unbroken flights of stairs.

It's because the natural 'angle' of escalators and stairs are different,
due to the different step dimensions. The landings are needed to keep
the two in synch.

I think you might have put the cart before the horse... I think the step
size of escalators is deliberately different to the step size of steps
in order to ensure that a flight of escalators and multiple flights of
steps with landings can occupy the same shaft.

Daily Telegraph: 150 fascinating Tube facts
 

In message , at 15:55:08 on
Tue, 15 Jan 2013, Basil Jet remarked:
It's because the natural 'angle' of escalators and stairs are different,
due to the different step dimensions. The landings are needed to keep
the two in synch.

I think you might have put the cart before the horse... I think the
step size of escalators is deliberately different to the step size of
steps in order to ensure that a flight of escalators and multiple
flights of steps with landings can occupy the same shaft.

That might be plausible if the only escalators anywhere were the ones on
the tube, but they exist elsewhere, and have the same basic geometry as
the tube escalators, without the need to synch up with a step/landing/
step/landing scheme.
--
Roland Perry

Daily Telegraph: 150 fascinating Tube facts
 

On Thu, 10 Jan 2013 06:48:23 -0000, Offramp wrote:
On Jan 9, 10:27 pm, Recliner wrote:
112. There are 14 journeys between stations that take less than a
minute on average.

I imagine these are all in zone 1.

I think South Ealing to Northfields is one.

[I came late to this thread!]

Colin McKenzie

--
Cycling in the UK is about as safe as walking, and helmets don't make it
safer. Make an informed choice - visit www.cyclehelmets.org.