Sectional flight auger piles→

How it works

A sectional flight auger (SFA) works like a continuous auger split into short lengths. The rig drills one section, a new section is added, and the process repeats until the bore reaches the design depth. Because the mast never needs to be taller than one section, the rig can work where headroom and access are tight.

Our SFA rigs install piles up to 450mm diameter and up to 12m deep. They’re typically used on individual house plots, and for retaining walls and retro-fit basements on confined sites.

When it’s used

SFA piles are typically considered for all unobstructed ground conditions, including made ground and ground with a high water table, where access is restricted or working height is low.

Advantages

• Minimal vibration, so it’s ideal next to buildings and underground services
• Works on restricted access and low headroom sites, in most ground conditions
• Low noise
• Can be designed to overcome the adverse effects of ground heave