Compressed Air Work And Diving 1909
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CONCRETING UP.
49
one frame at a time as the concrete is brought up. In
the King Edward Bridge caissons the first 26 ft. from
the cutting edge was strutted with Steel girclers which
were concreted in ; the timber framing starteel above
this level.
Below low water the timbers will be kept in position
by the pressure of the water on the outsicle of the
caisson, but above low water there will be a tendency
for the shell to open a little. It will therefore be
necessary to have a few light Steel girclers to tie the
sides of the caissons together and prevent the sides from
spreading.
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