Resistance of closed-ended piles in a layered soil: A comparison of existing base and shaft capacity methods based on the measured jacking force

Foundations of buildings ensure the safety and serviceability are upheld. A common type of<br/>foundations used in the Netherlands is pile foundations which are typically founded on a thick sand layer in the subsurface. These pile foundations are the focus of this thesis and more specifically the methods used to design such foundations. This...

The Influence of Negative Skin Friction on the Bearing Capacity of Timber Piles in Amsterdam

This research looked into the influence of negative skin friction on timber piles in Amsterdam. Tensile load tests were performed on new, instrumented timber piles at Overamstel in Amsterdam. The negative skin friction calculated from the test data was compared to the negative skin friction from NEN 9997-1 for a single pile. The test results...

Geotechnical Bearing Capacity of Timber Piles in the City of Amsterdam: Derivation of bearing capacity prediction factors based on static load tests conducted on instrumented timber piles

In the city of Amsterdam, many structures, such as houses,bridges and quay walls, are founded on wooden piles. In order to gain insightinto the safety of such structures, assessment of the foundations is required.As part of an experimental framework assessing the safety of bridges and quaywalls in the city of Amsterdam, a...

Development of a new CPT averaging technique and review of existing CPT based methods for the calculation of total pile capacity

Over the last couple years, a number investigations into the α factors used for the cone penetration test (CPT) based calculation methods for the base and shaft capacity of driven piles have been carried out. These investigation, express different concerns and limitation of the currently used CPT based calculation methods. Prompting the need for...