FASTCAST™ tunnelling and underground products - CMS
FASTCAST™ tunnelling and underground products - CMS
FASTCAST™ tunnelling and underground products - CMS
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Six Segment Trapezoidal Tunnel Linings<br />
Fig 1.<br />
Plastic grout/ Non-return Sealing Threaded<br />
Fig 1. The rings lifting socket consist of three valve different washer segment grout plug<br />
types. Segments are supplied to the erector in<br />
a predetermined sequence dependant upon the<br />
alignment required.<br />
The ring orientation is altered by erecting segments in<br />
a different order.<br />
Fig 2. The staggered joint pattern, avoiding the<br />
cruciform joint (where the edges of four corners meet)<br />
is a major feature.<br />
Bolt pockets <strong>and</strong> caulking grooves are caulked or<br />
pointed to provide the finished lining.<br />
Fig 3. The plastic grout/lifting socket has a specially<br />
developed coarse thread for tunnel <strong>and</strong> shaft linings<br />
which allows easy thread starting <strong>and</strong> fast fixing.<br />
Plastic non-return valve, threaded grout plug <strong>and</strong><br />
sealing washer are also available.<br />
Fig 3.<br />
Plastic grout/<br />
lifting socket<br />
Plastic grout/<br />
lifting socket<br />
Rings in same orientation<br />
for curved alignment<br />
Non-return valve<br />
Non-return valve<br />
Sealing washer<br />
Sealing washer<br />
Threaded<br />
grout plug<br />
Threaded<br />
grout plug<br />
Fig 2.<br />
Rings rotated at 120 o<br />
for straight alignment<br />
Tunnel <strong>and</strong> shaft linings An AMEC company<br />
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