The brief
The river bed was workable for five months only. Eleven pier foundations had to be complete before the monsoon reached the working platform.
Boulder horizons at 12–18 m had stopped a previous contractor.
What we did
One contractor from the borelog to the final test certificate.
Bunded working platform designed for machine loads and a defined evacuation trigger.
Forty-four barrettes at 2.8 × 1.0 m to 34 m, two rigs working in parallel.
Chiselling regime agreed and priced up front instead of claimed later.
Cross-hole sonic logging on every barrette before the platform came out.
11
Pier foundations
44
Barrettes cast
34 m
Founding depth
1 season
Completed before monsoon
On site
“Two rigs, five months and no claim for the boulders. That was the whole risk on this package.”
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