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north american
Tunneling
September 2017
www.tunnellingjournal.com j o u r n a l
FREEZING SIDEWAYS
UNDER SEATTLE
Tunnelling
www.tunnellingjournal.com September 2017
The international journal for the tunnelling industry j o u r n a l
SEE PAGE 6
SEE PAGE 28
SEE PAGE 43
WORLD
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A SELECTION OF
HIGHLIGHTS FROM
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SERVICE
SHIELDHALL
PROGRESS
TJ TALKS TO
ENGINEERS ON
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DRIVEN TUNNEL AS
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WORKING GROUP
north american Tunneling
Tunnelling www.tunnell
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Above: Terratec wins big in Mumbai
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EFFICIENT SOLUTION. EXTENDED PROTECTION. The
SCL: So Conservative Lately The reason we're only
An array of photographs showing SCL techniques in
12 TUNNELLING JOURNAL
reduction of construction joints as far as possib
SCL Figure 1: SCL design options (Thomas and Dimm
SCL No waterproofing layer It could be that the
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WATERPROOFING Sprayed concrete composite shell
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SITE REPORT Shieldhall edging to completion As th
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SITE REPORT Setting the baseline The ground has b
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LININGS Traditional steel rebar v GFRP Simone Spa
LININGS Figure 2: Fiberglass cages: a) Ring rein
36 TUNNELLING JOURNAL
LININGS Figure 5: Bending test: final crack patte
LININGS Figure 6: Point load test: final crack pa
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FIRE SAFETY been a number of serious underground
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FIRE SAFETY now being replaced by other types of
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The History of Tunneling y of
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