The foundations of river bridges on alluvial soil are decided largely based on hydraulic data and subsoil strata. The subsoil strata is represented by a numerical value called the silt factor. This factor plays a vital role as the foundation level depends upon soil strata underneath, which is examined based on the bore log data. Bridges are very costly due to various reasons and the depth of foundation is one of them. There is a need to optimize the depth of the foundation to a pragmatic level, which can be constructed safely without undue delay as per construction practices. Any variation in foundation level at a later date plays a crucial role in the overall cost of the bridges and affects the completion time of the project. It is highlighted that pre-construction investigation should be given more attention to avoid any lapse in the construction program. Data analyzed based on investigation need to be reviewed in terms of construction trend in the area. The importance of the silt factor is discussed in this paper. An accurate estimation of the same helps in completing the structure in less time without time and cost overrun.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 560-565

Subject/Index Terms

Filing Info

  • Accession Number: 00977041
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 5 2004 12:00AM