TENDER VALUE: £0.5M
CONTRACT: BO’NESS HABOUR REGENERATION
CLIENT: ING DIRECT
The investigation comprised marine and on-
Cable percussion and cone penetrometer methods were performed from a uniflote pontoon drilling platform in a heavily silted harbour area, with a significant tidal range. Standard penetration testing, variable head permeability and vane shear were undertaken in the cable percussion holes in accordance with the contract specification. Rotary coring was performed using a 412” core barrel and air flush in order to retrieve 76mm lined rock cylinder samples. Coring yielded few losses even where ‘broken ground’ and artesian water conditions were encountered.
Access to the pontoon used bespoke interlocking buoyancy modules to provide safe walkways for operatives, with a support boat on hand as an additional safety feature. The work was successful and was commissioned, in part, on our unique approach to the access issues that the harbour presented.
EXPERTISE FOCUS: Over-