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Re: Imagine an Altamont not so long tunnel
Author: Clem
Date: 12-10-2018 - 23:21

If you ditch diesel you don’t need much tunnel length to shoot straight across Altamont. Modern EMUs can easily swallow 4+ percent grades even at high speed, cutting the tunnel length to 2.5 miles or so. The SETEC alignment from 2010, which CHSRA strenuously didn’t want to study lest it throw shade on Pacheco, was engineered less aggressively and needed a 4.2 mile tunnel over the pass.
[www.tillier.net]

The savings of shorter tunnels offset electrification costs, with bimode DEMUs providing interim service as soon as the new shortcut is done.

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Subject Written By Date/Time (PST)
  Fresno pols gung-ho for CAHSR dollars synonymouse 12-10-2018 - 10:02
  Re: Fresno pols gung-ho for CAHSR dollars Taxpayer 12-10-2018 - 11:50
  Re: Fresno meeting has the usual trolls gung-ho for CAHSR conspiracy theory??? BOB2 12-10-2018 - 14:27
  Re: Imagine an Altamont long tunnel??? BOB2 12-10-2018 - 15:57
  Re: Imagine an Altamont not so long tunnel Clem 12-10-2018 - 23:21
  Re: Imagine an Altamont not so long tunnel synonymouse 12-10-2018 - 23:49
  Re: Imagine an Altamont not so long tunnel hysterical 12-11-2018 - 07:31
  Re: Imagine an Altamont not so long tunnel synonymouse 12-11-2018 - 10:02


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