Borehole Drilling & SPT (Standard Penetration Test)

Deeper subsurface investigations beyond 3 metres

Service Overview

For projects requiring deep subsurface investigation, BSGC offers comprehensive borehole drilling with Standard Penetration Testing (SPT). This service includes rotary and percussion drilling, rock core recovery, SPT sampling, and full laboratory analysis for complete ground characterisation.

When to Use Borehole Drilling

• Multi-storey residential and commercial buildings
• Heavy industrial structures and infrastructure
• Deep foundation requirements (pile foundations)
• Complex geological conditions requiring rock profiling
• Projects exceeding 3 metres investigation depth

What's Included

• Rotary or percussion borehole drilling to required depth
• Standard Penetration Testing (SPT) at intervals
• Rock core recovery and logging
• Undisturbed and disturbed sample collection
• Comprehensive laboratory testing of all samples
• Detailed borehole logs and stratigraphy
• Complete geotechnical engineering report

Advantages of Borehole Drilling

• Deep Investigation: Access to subsurface conditions at any depth
• Comprehensive Data: SPT values, soil samples, rock cores
• Rock Profiling: Accurate rock layer identification
• Laboratory Testing: Full strength and compressibility analysis
• Foundation Design: Complete parameters for deep foundations

Typical Deliverables

• Detailed borehole logs with stratigraphy
• SPT penetration profiles and N-values
• Laboratory test results summary
• Bearing capacity calculations
• Foundation design recommendations
• Settlement analysis
• Comprehensive geotechnical report