Spiral Drillers Civil has been installing large diameter access shaftsfor over 20 years.These shafts range in finished diameter from 3.6m and down to 40m in depth. Shafts provide a safe and cost effective solution construction benefit to micro-tunneling operations, pump station construction, manhole installation and even silo construction.
Our equipment and tooling capabilities combined with our drilling methods have positioned Spiral Drillers Civil as the leader in large diameter auger excavations. We have successfully excavated these large shafts under both dry and wet conditions
Drill 20 x 18m deep piles and place universal columns and backfill with sand for top down construction of vertical access shaft for installing new stormwater pipeline
Traffic management and assisting with silt control was required.Piling was a continuous operation as weak ground conditions posed a potential problem