This paper contains a discussion of a paper pretaining to measured culvert performance as well as a closure by the authors of that paper, which is a response to the discussion. The discusser questions some of the authors' conclusions drawn from the Burns and Richard solution, particularly regarding the slip of the bolted longitudinal joints in the culvert. The closure writers regard as incorrect the discusser's assumptions on the high-strength bolt grade and on the bolt installation procedures. However, they do acknowledge the limitations of the Burns and Richard solution for the Newtown culvert situation pointed out by the discusser. Perhaps more important, according to the writers, is the fact that this solution does not represent the incremental placement of soil layers, but instead assumes that the structure is fully embedded in a weightless soil, after which the effect of the soil weight is added by applying a pressure to the soil surface. To overcome this limitation, a finite element method of analysis was subsequently undertaken. This analysis, which took into consideration laboratory data on the bolted seam behavior, also indicated that the circumferential stiffness was less than that of a solid metal ring. However, the reduced stiffness was much less than the factor of 30 in the discussed paper.

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  • Accession Number: 00324522
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 15829
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM