The Safety Level Of Concrete Pile Foundations Under Industrial Monuments

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Abstract

Prefabricated concrete piles have been used for the foundation of bigger buildings for about a century. Often a change in function, an addition (also vertically) or another type of alteration is required, resulting in different loads on the foundation. There are several complicating factors that return regularly in these assessments. The first one is a lack of data. Often drawings are missing or incomplete, e.g. showing only pile head dimensions or maximum calculated load but not the pile length, pile tip shape or material properties. Inspection is hard and only possible for the part directly under the pile head. And a third complication is that in The Netherlands there have only been official codes for piles since 1992.

Various calculation and design methods from WWII until 1985 are discussed to see if there is any consistency that might lead to an indication of the load bearing capacity of piles in The Netherlands from that era.

It is concluded that design rules for the load bearing capacity of concrete pile foundations in The Netherlands have been inconsistent over time. If the original detailed geotechnical calculations and/or structural drawings cannot be found in archives then the given ultimate loads cannot only not be exceeded; even if the load on a pile is currently less than stated on the technical specifications designers are advised not to increase the load.
Original languageEnglish
Title of host publication12th International Conference on Structural Analysis of Historical Constructions
Subtitle of host publicationSAHC 2021, Online event, 29 Sep - 1 Oct, 2021
EditorsP. Roca, L. Pelà , C. Molins
Place of PublicationSpain
PublisherInternational Centre for Numerical Methods in Engineering, CIMNE
Pages192-199
Number of pages8
ISBN (Print)978-84-123222-0-0
Publication statusPublished - 2021
Event12th International Conference on Structural Analysis of Historical Constructions - Online event
Duration: 29 Sep 20211 Oct 2021
Conference number: 12
https://congress.cimne.com/SAHC2020/frontal/default.asp

Conference

Conference12th International Conference on Structural Analysis of Historical Constructions
Abbreviated titleSAHC
Period29/09/211/10/21
Internet address

Keywords

  • Pile Foundation
  • Pile Capacity
  • Adaptive Reuse
  • Codes

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