BORED PILING PRODUCTION RATE
(Based on Marina Barrage Project experience)

PRODUCTION
RATE

CREW

PLANT

WORKING CONDITION

0.60 - 1.0 no/rig.d (1.0 is challenging, if not possible)

- 1 site supervisor;
- 1 piling rig operator;
- 1 service crane operator;
- 1 excavator operator;
- 1 welder;
- Polymer or bentonite: waterman (for whole site);
- Barbenders for cage fabrication (for the whole site)

- Bentonite silo (portable type);
- Water tanks;
- De-sander;
- Diesel driven crawler type piling rig;
- Crawler type service crane;
- Excavator

- Soft to media sandy clay;
- 50-70 m deep;
- D=1000-1500m;
- SPT test required to determine the Old Alluvium strata (founding level);
- Steel casing for top part of bored hole;
- Polymer (density=1.04 t/m3) or Bentonite (density=1.02 - 1.1 t/m3);

NOTE:
Polymer is more environment-friendly compared to bentonite, but density of bentonite can be adjusted to be heavier so as to suit greater ground water pressure. The residual of bentonite has to be sent out to the designated dumping ground. Refer to Bored Piling Technology.

 


Typical bored piling layout

CROSS REFERENCE
Bored piling technology