sunnyraytoronto said:
About 10 years ago,... core drilling at 4800 Yonge - southeast corner of site,.... there's WYE subway turning tunnel underneath/nearby,.... the old-timer drilling hit something,... might have been roof of that subway turning tunnel,... but he also hit water - there's under ground creek here,... that's why Emerald Park to south has huge underground water reservoir collector along its north-side and tanks along its east-side on Yonge St!

4800 Yonge Street | 168.24m | 49s | Menkes | Arquitectonica

observation monitoring caps like that usually have an iron rod below it that surveyors use to ensure that the ground isn't moving, They usually install them around excavation sites in urban environments to ensure the ground around the pit isn't moving. It isn't to monitor water levels. Now...
urbantoronto.ca urbantoronto.ca

For 4800 Yonge,.. Yonge Subway underneath Yonge St roadway, Sheppard Subway underneath Sheppard roadway,.... connecting turning tunnel underneath 4800 Yonge site - that's why they're taking forever doing their underground work,... oh, and I'm pretty sure they used pile drivers at 4800 Yonge,.... my ears are still ringing!!!

4800 Yonge Street | 168.24m | 49s | Menkes | Arquitectonica

From 1985 Source
urbantoronto.ca urbantoronto.ca

BUT here,.... Yonge Subway is not underneath Yonge St roadway,... it's east of the roadway,... about 200ft east of the most eastern property line of this site!
Click to expand...
Hello Sunnyraytoronto,

The basic difference between shoring rigs and pile drivers is that shoring rigs use a rotational or turning auger to drill out the hole, into which material (steel beam, concrete) is subsequently inserted as part of the retaining wall structure. A pile driver uses a hydraulic hammer (previously a steam hammer) to pound a steel girder directly into the ground. The pictures from the posting that you referenced are actually showing two shoring rigs at Yonge and Sheppard, not pile drivers - the hydraulic mechanism that is used to turn the auger is clearly visible on both rigs, and there are no hydraulic hammer attachments.

The noise that made your ears ring is typical of shoring rigs. After the auger has completed a drilling cycle, it is lifted out of the ground, and the rig is turned away from the hole, and the auger is then rotate back and fourth to shake off the ground that has accumulated within the auger. As the auger switches back an forth shaking out the dirt, causes a very loud banging noise.

Aslo, having been on the Yonge subway many time - from south to north, the alignment is as follows:

  • King to College - under Yonge Street
  • Between College and Wellesley - moves out from under Yonge to being on the east side of the road
  • Wellesley to St. Claire - east of Yonge
  • Between St. Claire and Davisville moves from east to west side of Yonge
  • Davisville to Eglinton - west side of Yonge
  • Just north of Eglinton, after the short section with a centre track - the subway line moves to being under Yonge Street
  • From there, the line is under Yonge Street, all the way to Finch station
I do not believe there are any further turns in the track between Lawrence and Finch stations - a point at which the line moves 200 feet east of the Yonge Street centre line to go east of York Mills station, and then back west to being under Yonge Street. From prior years when there were seats beside the driver's cab, and one could look out front of the lead subway car - I do not recall seeing any turns along this section of track.
 
AHK said:
Aslo, having been on the Yonge subway many time - from south to north, the alignment is as follows:

  • King to College - under Yonge Street
  • Between College and Wellesley - moves out from under Yonge to being on the east side of the road
  • Wellesley to St. Claire - east of Yonge
  • Between St. Claire and Davisville moves from east to west side of Yonge
  • Davisville to Eglinton - west side of Yonge
  • Just north of Eglinton, after the short section with a centre track - the subway line moves to being under Yonge Street
  • From there, the line is under Yonge Street, all the way to Finch station
I do not believe there are any further turns in the track between Lawrence and Finch stations - a point at which the line moves 200 feet east of the Yonge Street centre line to go east of York Mills station, and then back west to being under Yonge Street. From prior years when there were seats beside the driver's cab, and one could look out front of the lead subway car - I do not recall seeing any turns along this section of track.
Click to expand...

The alignment of the track at York Mills is just a smidge east of Yonge.

You can see this in the following construction photo, showing the tunnel excavation immediately south of the station, and south of York Mills Road:

1737025800861.png

Source, Toronto Archives:
September 19, 1969
Fonds 16, Series 1604, File 86, Item 163.

Yonge is open on the right hand, west side of the image.
 
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Original proposal for Yonge Subway at YorkMills/Wilson was to emerge from other side of Yonge St about 300m from Yonge St,... above ground! Like Old Mills Subway Station over Humber River,...
Image looking south, down Yonge St south of 401:
1737047176064.png


"This Toronto Archives image shows a model of an early proposal for York Mills station. The image looks south, with Yonge Street on the left. As you can see, the subway would emerge from the side of the valley, cross York Mills and the Don River over a bridge, before diving back underground by Highway 401. York Mills station would have resembled Old Mill. Residents at the nearby Armour Heights neighbourhood objected, saying the "noise pollution" would adversely affect property values, even with Highway 401 already in place. This image is courtesy the Toronto Archives."

Armour Height neighbourhood is on-ridge to west,... then Hoggs Hollow neighbourhood insisted it be buried - hence York Mills Subway Station is very deep,... to deal with nearby Don River West,... which is very close to south end of York Mills Station - lots of water issues!
 
Gupta Group... They have completed two projects and I have toured one of them when I was looking for a place.... It wasn't great.

They are basically sitting on a bunch of pre-construction projects - not sure if they will move ahead with most of them. I don't really have faith in their work tbh. If they have any resources, I would like those resources to go to work on the Distillery District Hotel. Don't really want them to do a half-baked job there.
 
sunnyraytoronto said:
Original proposal for Yonge Subway at YorkMills/Wilson was to emerge from other side of Yonge St about 300m from Yonge St,... above ground! Like Old Mills Subway Station over Humber River,...
Image looking south, down Yonge St south of 401:
View attachment 625945
Click to expand...
Would be strange to named York Mills when it was actually located along Wilson...
 
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