01603 250754 admin@howland.co.uk
01603 250754 admin@howland.co.uk

Environmental investigations

Window and windowless sampling are rapid, cost-effective methods for retrieving near-surface soil samples in geotechnical and environmental investigations. By driving cylindrical steel tubes into the ground with a high-frequency percussive hammer, these techniques provide reliable soil samples while minimising disruption to the site.

Typical depths

  • Investigation depths commonly range from 3m to 5m, though depths up to 10m can be achieved in favourable conditions where the borehole remains open without support.
  • Depth and success depend on factors such as soil type, presence of groundwater, and obstructions.
Window sampling Rig

Why choose A F Howland Associates?

  • Proven expertise: our decades of industry experience guarantee professional, innovative solutions.
  • Accuracy & reliability: we adhere to the highest standards to ensure the data you receive is both precise and actionable.
  • Customised reporting: from initial assessments to detailed insights, our reports are tailored to meet your project’s unique requirements.
  • Dedicated support: our specialist team is committed to helping you interpret results and move forward with confidence.

Ready to take the next step?

Contact us today to discuss your site investigation requirements. Let A F Howland Associates provide the dependable data and expert guidance you need for a successful project.

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California Bearing Ratio (CBR) testing services

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01603 250754 admin@howland.co.uk
  • Over 40 years of experience
  • Reliable expertise
  • Tailored services
  • Fast, accurate results

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