23Nov90 UK: KELLER COLCRETE'S SINGLE BORE MULTIPLE ANCHOR SYSTEM IS SIMPLE BUT EFFECTIVE. (2 OF 2)
It is in poor ground conditions especially where Mr Barley believes SBMA can score. Conventional anchors can suffer from difficulties in variable, weak ground because of their small effective length. If the end of the tendon is fixed in even a small pocket of bad ground, the whole unit can be rendered useless and need to be replaced. With the SBMA system, single anchor unit failure can be incorporated in the design, and costly remedial works can be avoided. An early trial of the system ...
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