On Local Practices For Pile Foundation Design And Construction: Geoss Guidelines

: Using Interferometric Synthetic Aperture Radar to detect millimeter-level settlement of pile groups over time.

Issued in September 2019, this practical guideline addresses a common challenge in bored piling: determining, during construction, whether the material encountered at the pile toe is competent rock (weathering grade III or better) that can provide the intended end‑bearing resistance. : Using Interferometric Synthetic Aperture Radar to detect

The circular applies to both bored piles and barrette piles (another type of deep foundation element) and became mandatory for structural plan submissions submitted on or after 1 March 2026. It is supplemented by three annexes: Annex A (design and construction guidelines), Annex B (good practices for geophysical surveys), and Annex C (good practices for limestone cavity logging in boreholes). It is supplemented by three annexes: Annex A

Perhaps most importantly, the GEOSS guidelines are . The 2025 limestone guideline involved extensive consultation with piling contractors, site investigation companies, geophysical survey companies, grouting specialists, consultants, academia, professional institutions, and government agencies. This collaborative process ensures the guidelines reflect practical realities rather than theoretical ideals. site investigation companies

Tracks millimetre-scale ground deformation and historical surface settlement over time.