Rock Anchors and Seawall Grouting
Client: Groundfix Ltd
Works: The project involved both the installation of 12 ground anchors to 11m deep, into a secant retaining wall that would support the railway main trunk line, and the provision of 100m of grouting repairs, for the reconstruction of a sea wall. Works required Texco’s Track Mounted Multifunctional Rotary Drill unit (Casagrande C6 XP) and a grouting unit.
Anchors were drilled close to ground level, in close proximity to the railway tracks, for the purposes of subsequent tie-back installation. Texco anchors successfully tested to %150 of design loads.
The project also required the excavation and subsequent re-filling via grout into erosion cavities at the base of a concrete sea wall. Grout pumping was conducted to strengthen and repair the wall prior to subsequent rebuilding of the coastal retaining structure. Texco contributed design expertise to ensure the optimal grouting results could be achieved within engineering requirements.
The site required expertise in deep anchor drilling, as well as coordinating on a busy site alongside other drilling operations, and other construction works in railways and roading. Furthermore, as earthquake remedial work, it was necessary to execute this project to tight timeframes.
Timeframe: 6 weeks, commencing in October 2017, with testing concluding in November 2017
Contract Scale: $100,000 - $500,000
Installation of RB25 anchors to 6 metres, through existing retaining wall
Client: Mike Herlihy Consulting Ltd
Works: Installation of 8 horizontal RB25 anchors embedded to 6metres through an existing retaining wall, using the Casagrande C6XP tracked drill rig.
Timeframe: Carried out over February 2015
Contract Scale: Under $100,000
Soil Nails and Anchoring System for Retaining Wall
Drilling and grouting of 13 x RB16 Rock Anchors and Soil Nails, to anchor the retaining wall footing on a new residential rebuild. Anchors were proof tested to 5 tonne.