tunnelling-journal (1)
tunnelling-journal (1)
  • Home
  • Print
    • Subscribe
    • Tunnelling Journal
    • Breakthrough
    • ITA Activity Report
    • A&NZ Journal
    • WTC Preview
    • Media Kit
  • Digital
    • Newsletter
    • E-Shots
    • TJ Digital edition
    • Products Page
    • Media Kit
  • Conferences
    • BTS Conference and Exhibition
    • Cutting Edge 2022
  • Buyer’s Guide
  • Events Diary
  • Jobs
  • About Us
  • Contact Us
  • Podcast

Home > Bertha's main components all now lowered

Bertha's main components all now lowered

Tris Thomas

Written by Tris Thomas on 09/09/2015 in News

Tagged:

Seattle Tunnel Partners has successfully lowered three large pieces of Bertha, the 17.52m diameter Hitachi Zosen EPBM SR 99 tunnelling machine’s front shield into the access pit for reassembly meaning that all major components of the TBM are now in the pit.

On Saturday, Aug. 29 and Monday, Aug. 31, respectively, crane crews from Mammoet lowered two 98-ton side body pieces.

On Friday, Sept. 4, the 278-ton middle shield was lowered.

With all major components of the machine now in the pit, crews are focusing on reassembling the machine and preparing for the testing phase of the repair effort. Crews will spend the coming weeks welding pieces back together, in addition to the lengthy task of reconnecting the hundreds of wires and hoses that are integral to the tunneling operation. STP and Hitachi Zosen will conduct a series of tests following reassembly to ensure the machine is ready to resume mining.

Comments:

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

  1. GeorgeHanshaw1 says:
    11/09/2015 at 4:22 am

    Years late, millions over budget, and only 10% complete. Let the litigation begin…

    Reply

Search

Digital Edition

More Like This

11/05/2022

First major contract for BART San Jose/Santa Clara extension approved

First major contract for BART San Jose/Santa Clara extension approved

The Santa Clara Valley (VTA) Board of Directors has voted unanimously to authorise the General Manager/CEO to execute the first…

25/01/2022

Brenner Lot H41 construction begins

Brenner Lot H41 construction begins

Mid-January 2022 saw work has begun on ‘Lot H41 Gola del Sill-Pfons’ of the Brenner Base Tunnel. The contract, worth…

21/01/2022

hyperTunnel chosen for innovator catalyst programme

hyperTunnel chosen for innovator catalyst programme

New underground construction specialist hyperTunnel has been selected to join a global acceleration and support programme run by Leonard, the…

  • Contact Us
  • Media Kit
  • Magazine Archive

Newsletter

The latest from the Tunneling Journal direct to your inbox.

Social



Enquiries

TGS Media Ltd
The Old Library
Webster House
Dudley Road
Tunbridge Wells
TN1 1LE
United Kingdom

© Tunnelling Journal. All Rights Reserved. Privacy Policy / Terms & Conditions. Admin

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.OkRead more