Valley Line LRT | ?m | ?s | City of Edmonton

EdwardEdm

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Who said anything about anyone screwing up? General rail grinding and “surveying and fine-tuning” are two different things for two different purposes.

The first run of rail grinding was done to remove any defects/residue/weld marks from the construction process and to result in a smoother, more uniform rail surface so trains run quieter and more smoothly.

The surveying and fine-tuning process is much more in-depth using specialized measurement and adjustment equipment which optimizes train movement and ride comfort.
Sorry for the late reply in this one, but, the arrival of the machine in question confirmed my suspicions. You don't brining in something they say looks like a diesel locomotive for fine tuning work.
What even is fine tuning of rails? They need to be shaped to an optimum profile for the type of wheel in use. It's either the correct profile or it's not. Any fine tuning I've seen done on the Capital and Metro lines was done with portable rail grinders after repairs were made to the track.
It turns out the machine they have brought in is a milling machine. https://northamerica.rhomberg-sersa.com/en/services/urban-rail-services-milling-machines
Anyways, although TransEd's advisory is accurate that there will be only minor grinding, I will be curious to see the extent of milling operations.
Curious why they didn't just start with this machine in the first place. That what makes me wonder what they did wrong the first time.

This adjustment process adjusts the rails with methods besides just grinding the rails. You can’t do this step until you do the first.

Which methods are those?
The embedded track is enclosed in an elastomeric grout, and the exposed track utilizes direct fixation where there is really no way to adjust the rails.
Sure, on ballast and tie construction you certainly can adjust the track, but not with embedded or direct fixation.
 
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yeggator

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Ain't no valley low enough
Ain't no river wide enough
To keep the train from getting to you, baby.
 

Kaizen

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A few more pics from this past Sunday's pedestrian access opening. It was a fun event.
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I really love the big viewing decks.
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Great art
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A close up of one of my favourite's
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Can't wait to see more pictures of the cable stays and tower lighting at night.
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There are LED light strips at the base of each pillar for subtle night lighting, not too noticeable in the daylight, of course, but they were on.
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CplKlinger

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