Track re-lay practices (was Box Hill extension)
Brent Efford
Friday, April 19, 2002 4:24 AM
"In addition to being quieter, asphalt (bitumen) is much easier to work with
when track repairs need to be performed."
Hmmm ... not quite sure about this one. If, as on the new Whitehorse Rd
track, the concrete is solid up to just below the rail head, and the asphalt
is a thin layer on top, mainly for aesthetic reasons, I can't see where
there would be any maintenance advantage. Surely the asphalt is an extra
complication - though probably a worthwhile one, like the rubber boot.
Now we are on the topic of trackwork - can anyone tell me when Melbourne
track relaying practice switched from constructing a temporary track and
maintaining services around the work (which went on mainly during normal
working hours as far as I know) to the current practice of closing both
services and the road, and working round the clock with heavy machinery over
a weekend? I presume the change pre-dates privatisation.
The use of concrete sleepers on the Box Hill job is interesting. Are they
now used for relays as well? The method used as recently as last August was
to prop the rails on concrete blocks and shims, with gauging and horizontal
alignment ensured by tie-bars and temporary wooden braces, as shown in the
attached I took in Glenferrie Rd. Using sleepers seems likely to be far
easier.
Cheers,
Brent Efford
TechMedia Services
Co-ordinator, Transport 2000+ NZ
PO Box 2626, Wellington 6015
New Zealand
[email protected]
Ph (04) 801 9331, Fx (04) 801 9344
Mob 025 887 387
www.techmedia.co.nz
-----Original Message-----
From: Peter D. Ehrlich [mailto:[email protected]]
Sent: Friday, 19 April 2002 5:40 a.m.
To: TramsDownUnder
Subject: [TramsDownUnder] Re: Box Hill extension
In a message dated 17 April 2002 @ 0437 PST, "Malcolm Miles"
<[email protected]> wrote:
Maybe some of the top management types are finally listening to R. T.
Murphy. You know, it's funny how much knowledge those who are experienced
tram operators have which--if listened to by those who think they know
everything--would make a big difference.
In addition to being quieter, asphalt (bitumen) is much easier to work with
when track repairs need to be performed.
Milantram
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when track repairs need to be performed."
Hmmm ... not quite sure about this one. If, as on the new Whitehorse Rd
track, the concrete is solid up to just below the rail head, and the asphalt
is a thin layer on top, mainly for aesthetic reasons, I can't see where
there would be any maintenance advantage. Surely the asphalt is an extra
complication - though probably a worthwhile one, like the rubber boot.
Now we are on the topic of trackwork - can anyone tell me when Melbourne
track relaying practice switched from constructing a temporary track and
maintaining services around the work (which went on mainly during normal
working hours as far as I know) to the current practice of closing both
services and the road, and working round the clock with heavy machinery over
a weekend? I presume the change pre-dates privatisation.
The use of concrete sleepers on the Box Hill job is interesting. Are they
now used for relays as well? The method used as recently as last August was
to prop the rails on concrete blocks and shims, with gauging and horizontal
alignment ensured by tie-bars and temporary wooden braces, as shown in the
attached I took in Glenferrie Rd. Using sleepers seems likely to be far
easier.
Cheers,
Brent Efford
TechMedia Services
Co-ordinator, Transport 2000+ NZ
PO Box 2626, Wellington 6015
New Zealand
[email protected]
Ph (04) 801 9331, Fx (04) 801 9344
Mob 025 887 387
www.techmedia.co.nz
-----Original Message-----
From: Peter D. Ehrlich [mailto:[email protected]]
Sent: Friday, 19 April 2002 5:40 a.m.
To: TramsDownUnder
Subject: [TramsDownUnder] Re: Box Hill extension
In a message dated 17 April 2002 @ 0437 PST, "Malcolm Miles"
<[email protected]> wrote:
I'll be damned. Looks like they are covering it with bitumen instead of
concrete. That's much quieter.
R T Murphy
And the rails are mounted in rubber to keep it even quieter.
Best wishes,
Malcolm
Maybe some of the top management types are finally listening to R. T.
Murphy. You know, it's funny how much knowledge those who are experienced
tram operators have which--if listened to by those who think they know
everything--would make a big difference.
In addition to being quieter, asphalt (bitumen) is much easier to work with
when track repairs need to be performed.
Milantram
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Stock for $4
and no minimums.
FREE Money 2002.
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