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Smoothbore Shaft and Tunnel Segments 5<br />
Trapezoidal Tunnel Linings<br />
Internal<br />
diameter<br />
(m)<br />
External<br />
diameter<br />
(m)<br />
Size<br />
*Nominal weights increase by 5% for sizing of lifting equipment and reduce by 5% for flotation design.<br />
ExpandedTunnel Linings<br />
Max Ring<br />
Width<br />
(m)<br />
Min Ring<br />
Width<br />
(m)<br />
Segments<br />
per ring<br />
Vol per<br />
ring<br />
(m3)<br />
Wt per<br />
ring*<br />
(tonnes)<br />
Maximun<br />
piece<br />
weight*<br />
(kg)<br />
2.440 2.800 1.0075 0.9925 6 1.48 3.70 622<br />
2.590 2.950 1.0075 0.9925 6 1.57 3.92 658<br />
2.820 3.180 1.0075 0.9925 6 1.70 4.24 712<br />
2.870 3.230 1.0075 0.9925 6 1.72 4.31 724<br />
3.050 3.400 1.211 1.189 6 2.13 5.32 893<br />
Internal<br />
diameter<br />
(m)<br />
Size Segments per ring<br />
External<br />
diameter<br />
(m)<br />
Ring<br />
Width<br />
(m)<br />
Ord Top Key<br />
*Nominal weights increase by 5% for sizing of lifting equipment and reduce by 5% for flotation design.<br />
Bolts per ring<br />
(number x dia x<br />
length mm)<br />
24 x M18 x 260<br />
Spear Bolts<br />
24 x M18 x 260<br />
Spear Bolts<br />
24 x M18 x 260<br />
Spear Bolts<br />
24 x M18 x 260<br />
Spear Bolts<br />
24 x M18 x 260<br />
Spear Bolts<br />
Tel: +44(0)1455 290 780 precast@fpmccann.co.uk www.fpmccann.co.uk Fax: +44(0)1455 292 189<br />
Vol per<br />
ring<br />
(m3)<br />
Weight per<br />
ring*<br />
(tonnes)<br />
2.590 2.950 1.000 5 2 1 1.57 3.92<br />
3.050 3.400 1.200 5 2 1 2.13 5.32
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