Geoss Guidelines On Local Practices For Pile Foundation Design And Construction Verified 'link' -

: Focused on the safe and effective use of kentledge blocks for load testing in the local context. Key Design & Construction Principles

for strata where Standard Penetration Test (SPT) 'N' values exceed 100.

: Each design must be verified against specific performance criteria to ensure it preserves the structure's function throughout its design life. Kentledge Method for Pile Load Testing | PDF - Scribd

According to Eurocode 2 and local guidelines, bored piles require a strict minimum steel cross-sectional area ( Asbpmincap A s sub b p m i n end-sub

The ultimate purpose of these guidelines is verification — confirming that the pile’s actual load-settlement behaviour matches the design assumptions. GEOSS emphasises that initial load tests should be conducted to determine safe vertical and lateral loads, and that these test results form the basis for final design values. This verification loop — design, test, verify, adjust — is central to the GEOSS philosophy. : Focused on the safe and effective use

The guidelines, developed by an industry working group comprising academia, government agencies, practitioners, IES, ACES, and GeoSS, provide clarity on:

Kentledge load testing is frequently utilized to confirm pile capacity.

For bored piles, allowable concrete compressive stress is often limited (e.g., ) to ensure long-term durability.

Enter the This landmark framework does not seek to replace international codes but to validate and calibrate them against indigenous knowledge, local soil stratigraphy, and verified field performance. Kentledge Method for Pile Load Testing | PDF

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.

The circular was designed to supersede the earlier Advisory Note 1/03 and to align local practices with the Eurocode framework, particularly Eurocode 7 (EC7) on geotechnical design. It became effective for all structural plans submitted on or after 1 April 2017, and it remains a cornerstone of foundation verification in Singapore today.

The 2024 circular establishes:

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. The guidelines, developed by an industry working group

The 2025 edition of the GEOSS guidelines introduces a revolutionary component: . Using machine learning trained exclusively on verified local practice data (Tiers 1-4), the VLPE can:

GEOSS Guidelines on Local Practices for Pile Foundation Design and Construction Verified

The 2024 raft and piled-raft circular similarly emphasizes that “all qualified persons must continue to exercise their engineering judgment and evaluation and take all reasonable steps and due diligence to ensure that the use of Raft or Piled-Raft foundation will fulfil the objectives and performance requirements” .