THE CORRUGATED METAL CONDUIT AS A COMPRESSION RING

BRIEF DISCUSSIONS OF THE TYPES OF LOADINGS ON A CORRUGATED METAL STRUCTURE ARE GIVEN. THE LOADS CONSIDERED ARE THOSE ACTING IN A PLANE PERPENDICULAR TO THE LONGITUDINAL AXIS OF THE STRUCTURE WHICH TEND TO CHANGE ITS CROSS-SECTIONAL SHAPE. TWO TYPES OF STRENGTH IN THE STRUCTURE ARE CONSIDERED - RING COMPRESSION STRENGTH AND RING BENDING STRENGTH. A DISCUSSION OF REQUIREMENTS FOR RING COMPRESSION STRENGTH INCLUDES THE APPLICABLE FEATURES OF A RING COMPRESSION THEORY AND SHOWS HOW A CORRUGATED METAL CONDUIT CARRIES FILL LOAD BY MEANS OF ITS RING STRENGTH AND ITS ABILITY TO UTILIZE SUPPORT FROM SURROUNDING EARTH. A METHOD OF APPLYING LINEAR ARCH THEORY TO THE STRUCTURE IS GIVEN WHICH WILL ENABLE A DESIGNER TO APPROXIMATE THESE COMPRESSION REQUIREMENTS IN THE PERIPHERY OF THE STRUCTURE AND PRESSURE REQUIREMENTS IN THE SOIL SURROUNDING IT. THE REQUIREMENTS FOR BENDING STRENGTH ARE PRESENTED IN THREE PARTS DEALING WITH STRENGTH FOR RESISTING COLUMN BUCKLING IN THE STRUCTURE'S WALLS AND FOR BRIDGING INCONSISTENCIES IN THE BACKFILL, STRENGTH FOR MINIMUM COVER INSTALLATIONS, AND STRENGTH FOR HANDLING, TRANSPORTING, ERECTING AND INSTALLATION OF THE STRUCTURE. A DISCUSSION OF INSTALLATION FEATURES SUCH AS FOUNDATION CONDITIONS, BEDDING, IMPERFECT TRENCH METHODS OF CONSTRUCTION IS GIVEN, INCLUDING WHAT CONSTITUTES ADEQUATE BACKFILL AND COMPACTION AROUND A STRUCTURE. A SUMMARY INCLUDES STEP-BY-STEP PROCEDURES FOR THE VARIOUS METHODS OF DESIGN AND INSTALLATION OF CORRUGATED METAL STRUCTURES AS LOAD-CARRING CONDUITS. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/39/39-024.pdf
• Supplemental Notes:
  • Vol 39, pp 389-397. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • White, H L
  • Layer, J P
• Publication Date: 1960

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Ninth Annual Meeting of the Highway Research Board, Washington, D.C., January 11-15, 1960
• Serial:
  • Highway Research Board Proceedings
  • Volume: 39
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Backfilling; Bedding; Buckling; Columns; Compaction; Compression tests; Conduits; Corrugated metal culverts; Design; Fills; Foundations; Handling characteristics; Installation; Loads; Strength of materials; Theory
• Uncontrolled Terms: Handling; Loading
• Old TRIS Terms: Backfills; Cover; Foundation conditions; Imperfect trench methods; Ring compression and flexibility factor; Strength requirements
• Subject Areas: Design; Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00216437
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 9 1994 12:00AM