080731 6LYG A1 Particular Tunnelling Specification ... - SCATnow
080731 6LYG A1 Particular Tunnelling Specification ... - SCATnow
080731 6LYG A1 Particular Tunnelling Specification ... - SCATnow
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Lee Tunnel, Contract No. <strong>6LYG</strong>/<strong>A1</strong><br />
PT – <strong>Particular</strong> <strong>Tunnelling</strong> <strong>Specification</strong> - PT200<br />
PT248.12<br />
Design Loadings<br />
a) The internal lining shall be designed to resist the full internal hydrostatic<br />
pressure imposed when the tunnel and shaft systems fill to shaft roof soffit<br />
level.<br />
b) The internal lining shall be designed to resist the full external hydrostatic<br />
pressure imposed from the groundwater level as defined in the GBR.<br />
The loadings defined in a) and b) above shall be applied both simultaneously and<br />
separately.<br />
Thames Water Utilities Limited August 2008<br />
Page 38 of 38
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