Special care is needed in areas with karst features. Guidelines, as highlighted in related regional practices, suggest probing at least into solid rock and using grouting to treat cavities.
The guidelines mandate specific requirements for ground investigation, load testing, and quality control testing for deep foundations. Notably, QPs must exercise independent judgment on whether more stringent requirements should be adopted where ground conditions could be adverse or highly variable. Special care is needed in areas with karst features
The GeoSS guidelines are not imposed top‑down; they are co‑created with the industry. The limestone circular, for example, was developed through extensive consultation and feedback sessions involving piling contractors, geophysical survey companies, grouting specialists, consultants, academia, and government agencies. Similarly, the raft foundation circular was developed by an industry working group that reviewed overseas practices, existing literature, and past projects in local ground conditions before finalising the requirements. This collaborative approach ensures the guidelines are practical, implementable, and widely accepted. Notably, QPs must exercise independent judgment on whether
RLT offers significant advantages over conventional maintained static load tests (SLT), including much shorter testing duration, reduced manpower requirements, and lower carbon footprint. However, to ensure reliability without compromising safety, the guidelines: Similarly, the raft foundation circular was developed by