FASTCAST™ tunnelling and underground products - CMS
FASTCAST™ tunnelling and underground products - CMS
FASTCAST™ tunnelling and underground products - CMS
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
25<br />
Buclock<br />
Plastic tunnel lining connection<br />
Compatability with gaskets<br />
Buclock is fully compatible with elastic compression<br />
gaskets. The elastic performance of the connection<br />
compliments the compression characteristic of the<br />
gaskets, which means that it can be used with a stiff<br />
gasket <strong>and</strong> copes with varying joint gaps.<br />
Buclock/gasket interaction<br />
Load (kN)<br />
25<br />
22.5<br />
20<br />
17.5<br />
15<br />
12.5<br />
10<br />
7.5<br />
5<br />
2.5<br />
0<br />
0<br />
Water pressure<br />
Heavy duty Buclock extension characteristic<br />
The graph below shows the compression curve for a<br />
stiff EPDM compression gasket with a compression<br />
force to closure of 25kN/m 2 , superimposed on the<br />
extension characteristic of the heavy duty Buclock<br />
connection when used with a 2.44m I.D. tunnel lining.<br />
Gasket<br />
compression<br />
Joint gap<br />
Buclock<br />
extension<br />
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5<br />
Joint gap (mm)<br />
A resultant joint gap of 1.5mm @ equillibrium.<br />
Gasket sealing performance remains unaffected<br />
Stiff EPDM gasket compression characteristic<br />
Tunnel <strong>and</strong> shaft linings An AMEC company<br />
25
Change language