Toward less conservative flotation criteria for lightweight cables and pipelines

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Abstract

This paper aims to give a new perspective on possible criteria for the pipeline and cable flotation phenomenon. Laboratory flotation and pullout tests have been conducted in high moisture content kaolin clay using a model pipeline or cable analogue of 63mm diameter installed at different embedment depths. Uncertainty over the definition of "flotation" has led to comparison of data from previous studies and those obtained from the pull-out tests described herein. Different definitions of flotation may lead to a significant increase in the magnitude of available resistance used in design which can directly affect the commercial choices made for commercial pipelines and cables (e.g. coating type and thickness and minimum burial depth).

Original languageEnglish
Title of host publicationProceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
EditorsJin S. Chung, Howard H. Wang
Place of PublicationUnited States
PublisherInternational Society of Offshore and Polar Engineers
Pages535-540
Number of pages6
Volume2
ISBN (Electronic)9781880653975
Publication statusPublished - 2017
Event27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
Duration: 25 Jun 201730 Jun 2017

Publication series

NameProceedings of the International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Volume2
ISSN (Print)1098-6189

Conference

Conference27th International Ocean and Polar Engineering Conference, ISOPE 2017
CountryUnited States
CitySan Francisco
Period25/06/1730/06/17

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Keywords

  • Atterberg limits
  • Cable
  • Flotation
  • Kaolin clay
  • Lightweight
  • Liquidity index
  • Pipeline
  • Pull-out
  • Specific gravity

Cite this

Bizzotto, T., Brown, M. J., Powell, T., Brennan, A. J., & Chandler, H. (2017). Toward less conservative flotation criteria for lightweight cables and pipelines. In J. S. Chung, & H. H. Wang (Eds.), Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017 (Vol. 2, pp. 535-540). (Proceedings of the International Ocean and Polar Engineering Conference; Vol. 2). International Society of Offshore and Polar Engineers.