Knowledge
Ground investigation, explained
Practical guides for the engineers, consultants and developers who commission our work - choosing methods, difficult sites, contaminated ground and drilling safely around services.
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Methods
Window sampling vs rotary drilling: which method do you need?
A plain-English guide to choosing between window sampling and rotary drilling for a ground investigation - by depth, ground, access and what you need from the samples.
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Methods
Cable percussion with a rotary follow-on, or one multipurpose rotary rig?
The traditional two-rig approach - cable percussion through the soils, then a rotary rig following on for the rock - against a single multipurpose rotary rig that does both in one hole.
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Planning
What ground investigation do you need before you build?
What a ground investigation is for, when you need one, and the methods and testing that typically go into a scheme - so you can brief it with confidence.
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Difficult sites
Restricted-access ground investigation: options for difficult sites
Basements, gardens, embankments, live highways and soft ground - how ground investigation still gets done where a standard rig cannot go.
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Safe digging
How do you avoid striking underground services when drilling?
The layered approach - locating, mapping to PAS 128 and vacuum excavation - that keeps crews safe and live services intact before a rig breaks ground.
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