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Post by culvercitylocke on Jun 11, 2019 13:31:44 GMT -8
Soyeon breaking through very soon. Likely will be ahead of the estimated June 19 date in the April status report. The TBMs have averaged around 40 feet per day, by my calculation (9700 feet in 238 days). If Soyeon is still tunneling at this rate, it will reach Wilshire/Western by Wednesday! They only operate five days a week, not 7. At 32 weeks since the October 16 launch (I took out two weeks for Xmas and thanksgiving), that’s actually 160 days of mining for an average of 60 ft per day, or about 18.5 meters per day. About twenty percent faster than the international average of about 15 meters per day (a rate I’ve seen alon levy throw around at least). Given that the westward reach to fairfax is the most geologically fraught mining on the whole route, I imagine it is going to take substantially more time per day as they’ll go really slowly near the tar pits. |
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Post by culvercitylocke on Jun 11, 2019 14:58:31 GMT -8
Soyeon has broken through link |
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Post by metrocenter on Jun 12, 2019 10:49:46 GMT -8
Here's the Metro Source story. "A second TBM named “Elsie” that launched six weeks after Soyeon is also expected to break through to Wilshire/Western later in June." |
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Post by bzcat on Jun 14, 2019 16:55:34 GMT -8
So phase 1 tunneling is now complete?
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Post by numble on Jun 15, 2019 8:01:06 GMT -8
So phase 1 tunneling is now complete? No, Phase One is very long. They have only completed tunneling of one tunnel (Reach One) from La Brea to Western (Elsie has still not finished the second tunnel). They still need to tunnel from La Brea to Fairfax and from Fairfax to La Cienega. |
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Post by metrocenter on Jun 17, 2019 14:04:02 GMT -8
Major Project Status Report for June is out. Phase 1 is listed as 48% complete (overall progress). Last month it was at 47%. Phase 2 is listed as 17% complete (overall progress). Last month is was at 16%.
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Post by numble on Jun 25, 2019 11:58:22 GMT -8
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Post by numble on Jun 28, 2019 19:02:52 GMT -8
Elsie broke through at Wilshire/Western, slightly ahead of the schedule predicted in the May status report.
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Post by culvercitylocke on Jun 28, 2019 22:22:33 GMT -8
Elsie broke through at Wilshire/Western, slightly ahead of the schedule predicted in the May status report. Now the toughest reach begins... |
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Post by numble on Sept 23, 2019 16:03:02 GMT -8
August 2019 project status reports released for all 3 Purple Line extension sections:
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Post by numble on Oct 2, 2019 9:18:37 GMT -8
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Post by culvercitylocke on Oct 2, 2019 10:23:35 GMT -8
In that update they refer to the intersection of Wilshire/McCarthy vista, for those unaware this street is never referred to as such outside of maps but to all humans in Los Angeles interacting with the street grid this street is known only as Crescent Heights For unknown reasons lost to time, Crescent Heights is actually called three different names within a two hundred foot distance, crescent heights->Carrillo Dr->McCarthy Vista->Crescent Heights So naturally everyone just calls it crescent heights since it is insane to ever refer to it otherwise. |
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Post by numble on Oct 11, 2019 18:47:26 GMT -8
Tutor Perini will probably get a $440 million contract for the Division 20 turnback facility, it’s 4th Purple Line contract:
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Post by jahanes on Oct 12, 2019 12:36:52 GMT -8
Tutor Perini will probably get a $440 million contract for the Division 20 turnback facility, it’s 4th Purple Line contract: Out of curiosity, do you know the breakdown of contractors on past Metro rail construction projects? Google and Wikipedia aren't forthcoming on this, and I have to do a bit of digging just to find the contractors for ongoing projects. |
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Post by culvercitylocke on Oct 12, 2019 14:54:26 GMT -8
Tutor Perini will probably get a $440 million contract for the Division 20 turnback facility, it’s 4th Purple Line contract: So you’re saying it’s going to cost 1.2 billion now and be delivered eight years late? |
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Post by cygnip2p on Oct 12, 2019 15:02:27 GMT -8
Fixed price contract, right? .... RIGHT?
(sadly, I'm joking)
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Post by numble on Oct 12, 2019 16:12:22 GMT -8
Tutor Perini will probably get a $440 million contract for the Division 20 turnback facility, it’s 4th Purple Line contract: Out of curiosity, do you know the breakdown of contractors on past Metro rail construction projects? Google and Wikipedia aren't forthcoming on this, and I have to do a bit of digging just to find the contractors for ongoing projects. How far back are you looking? The name of the contractors for major projects since 2011 are in the status reports located here: libraryarchives.metro.net/DPGTL/StatusReports/For earlier projects they may be scattered throughout their digital archives somewhere: libraryarchives.metro.net/DPGTL/Or you can request a copy of the relevant contract through a public records request to RMC@metro.net. |
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Post by numble on Oct 16, 2019 14:33:33 GMT -8
TBM#2 (Elsie) has already begun tunneling and has dug 200 feet already. It was scheduled to start October 1, so I guess it is no surprise. TBM#1 is supposed to be scheduled to start tomorrow, October 17, according to the August status report.
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Post by jahanes on Oct 21, 2019 11:53:08 GMT -8
Out of curiosity, do you know the breakdown of contractors on past Metro rail construction projects? Google and Wikipedia aren't forthcoming on this, and I have to do a bit of digging just to find the contractors for ongoing projects. How far back are you looking? The name of the contractors for major projects since 2011 are in the status reports located here: libraryarchives.metro.net/DPGTL/StatusReports/For earlier projects they may be scattered throughout their digital archives somewhere: libraryarchives.metro.net/DPGTL/Or you can request a copy of the relevant contract through a public records request to RMC@metro.net. Thanks. I've been aware of this directory for some time but its so shoddily organized I rarely find the time to dig through it. |
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Post by numble on Oct 23, 2019 22:52:26 GMT -8
September 2019 status reports for all 3 sections:
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Post by numble on Oct 24, 2019 15:34:21 GMT -8
Elsie has completed 7.7% of her tunnel between La Brea and Fairfax, according to my calculations.
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Post by numble on Nov 1, 2019 5:19:00 GMT -8
They finished the excavation of the Section 2 launch pit and are scheduled to launch the first TBM in December 2019 and second TBM in March 2020. Not sure why there’s a 3 month gap, the Section 1 TBMs just have about a month separation. www.metro.net/projects/notices/notice_purpleline2_040518/ |
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Post by culvercitylocke on Nov 1, 2019 10:40:51 GMT -8
I would guess the gap is do to timing the tunnel mining under BHHS when school is out for winter break and spring break. They’ll probably pay the holiday wage penalties to mine as much as possible during the holidays so that the school and students can’t launch complaints that the tunneling is disrupting their life.
Is tunneling usually at night (to facilitate spoils haulage?) and maintenance in the day or vice versa?
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Post by numble on Nov 1, 2019 14:44:19 GMT -8
I would guess the gap is do to timing the tunnel mining under BHHS when school is out for winter break and spring break. They’ll probably pay the holiday wage penalties to mine as much as possible during the holidays so that the school and students can’t launch complaints that the tunneling is disrupting their life. Is tunneling usually at night (to facilitate spoils haulage?) and maintenance in the day or vice versa? Sounds like a pretty good theory. There was this LA Times article that explained tunneling on the Regional Connector, seems they tunnel in the morning and afternoon, one shift starting at 5 am and another shift starting around 3:30 pm. www.latimes.com/projects/la-me-metro-tunneling/ |
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Post by metrocenter on Nov 4, 2019 19:49:22 GMT -8
Both pairs of TBMs have about 2.5 miles and two stations to traverse to get to La Cienega, and both are launching this fall.
In other words: the race for La Cienega is on!
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Post by masonite on Nov 5, 2019 10:57:28 GMT -8
Both pairs of TBMs have about 2.5 miles and two stations to traverse to get to La Cienega, and both are launching this fall. In other words: the race for La Cienega is on! One is launching in Dec. and the other not until Mar. |
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Post by numble on Nov 5, 2019 19:27:51 GMT -8
Both pairs of TBMs have about 2.5 miles and two stations to traverse to get to La Cienega, and both are launching this fall. In other words: the race for La Cienega is on! One is launching in Dec. and the other not until Mar. However the Section 1 TBMs will stop for some amount of time when they reach the Fairfax station, while the original plan for Section 2 TBMs is to tunnel all the way through to La Cienega without major stops because none of the stations have been excavated yet. The station excavation plan is for them to break open the already-excavated tunnels. |
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Post by numble on Nov 6, 2019 11:08:55 GMT -8
Elsie has tunneled 600 feet, or about 13.6% of this tunnel drive, according to my calculations.
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Post by numble on Nov 12, 2019 7:57:25 GMT -8
Both pairs of TBMs have about 2.5 miles and two stations to traverse to get to La Cienega, and both are launching this fall. In other words: the race for La Cienega is on! There is tunnel length information on the Purple Line TBM website (Where are they now?): www.metro.net/projects/purple-line-extension-tbm/Section 1 TBMs will need to tunnel 4,440 feet from La Brea to Fairfax, and then stop and restart to tunnel 3,280 feet from Fairfax to La Cienega, and then a third small tail tunnel that is an additional 555 feet west of La Cienega. Since the launch box is being built at Constellation Blvd and Century Park East, it seems to suggest the Section 2 TBMs first tunnel will be 7,020 feet from Constellation Blvd. to Reeves Dr., followed by a second tunnel of 6,610 feet from Reeves Dr. to La Cienega. It seems it would be hard for the Section 2 TBMs to beat the Section 1 TBMs to La Cienega, unless there is a long stop at Fairfax and little or no stop at Reeves Dr. |
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Post by metrocenter on Nov 12, 2019 9:30:05 GMT -8
^ Yeah that makes sense. BTW I wasn't super serious about it. But I do like the idea that they're racing for some point in the middle, like when they built the Trans-Continental Railroad.
Also, as you know, things happen. Maybe Section 1 will have some kind of crazy delay. (I don't want that to happen, BTW.)
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