Integration of Standard Penetration Tests (SPT), Cone Penetration Tests (CPT), and geophysical surveys to map complex bedrock topography.
GeoSS-influenced local practices, often in alignment with Building and Construction Authority (BCA) requirements, prioritize specific design parameters to ensure high performance. A. Pile Capacity and Soil Parameters
These verified GeoSS guidelines ensure that the construction of deep foundations in Singapore is both safe and optimized for the local environment.
, detailing block arrangements and stability checks to ensure safe execution on-site. Ground Movement Control: Pile Capacity and Soil Parameters These verified GeoSS
: Exercised at the exact piling location to minimize soil displacement and reduce the risk of structural heaving in adjacent plots.
The 2019 guidelines on reuse of existing piles specify:
These practices have been verified through industry application since 2011, providing a safety framework that balances technical rigor with practical constructability. The 2019 guidelines on reuse of existing piles
Structural design must align with Eurocode 7: Geotechnical Design Principles , displacing outdated British Standards (such as SS CP4).
Qualified Persons submit a during the preliminary planning phase.
The design of the kentledge setup must be carried out by a Professional Engineer (PE). The design must encompass the type and amount of kentledge, the setup configuration, and foundation requirements, ensuring stability and safety during erection, testing, and in the event of unexpected pile failure during load application. and members from IES
Strict enforcement of construction tolerances, concreting, and testing methods to ensure verified performance. 2. Key Elements of Verified Pile Design Practices 2.1. Axial Load Capacity Estimation
The represent a comprehensive, risk-based engineering framework designed to standardise and validate deep foundation works in highly complex geological environments. Jointly developed by industry bodies like the Geotechnical Society of Singapore (GeoSS) alongside regulatory authorities, these verified guidelines mandate a strict transition from generic empirical equations to site-specific verification protocols. By combining advanced geotechnical investigations, Eurocode 7 design standards, and rigorous pile load testing , this framework ensures that deep foundations meet stringent structural safety, serviceability, and durability metrics under varying subsurface conditions. 🏗️ Core Pillars of the GEOSS Framework
The most recent addition to the GeoSS guideline suite addresses raft and piled-raft foundations—systems that can provide cost-effective solutions for high-rise buildings when properly designed and constructed on competent ground. Recognizing that existing codes and guidelines primarily address conventional pile foundations with limited guidance on raft and piled-raft systems, BCA formed an industry working group—including academia, government agencies, and members from IES, ACES, and GeoSS—to develop these requirements.