Engineered excavations and confined space work to reach valves, mains and chambers at depth.
Past 1.2 metres, we won't dig without support — beyond that depth it needs shoring and temporary works, and that's where we start. Every excavation runs off a temporary works design engineered for the specific loads, ground conditions and depth involved, then built to that design. There's no real depth limit — we've gone down 11 metres. Confined space work covers anything past 1.2 metres, plus tunnels and headings, and where the atmosphere's a risk, a sewer chamber for instance, it's gas monitors, harnesses and trained operators throughout.
Generally anything below 1.2 metres, plus tunnels and headings. Whether it's formally confined space also depends on the atmosphere; a sewer chamber that's just been opened needs full gas monitoring and harnesses, while a clean, open shaft at the same depth might not.
Most know upfront — trunk mains and larger assets are rarely shallower than 1.2 metres. Some contractors we work alongside only go to 1.2 metres themselves, and that's the point they bring us in.
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