MANUAL RECOMMENDATIONS: COMMITTEE 1 - ROADWAY AND BALLAST

THE FIRST SECTION OF THIS REPORT, ENTITLED EXPLORATION AND TESTING, DESCRIBES STEPS REQUIRED TO ASSEMBLE SUFFICIENT INFORMATION ON SITE CONDITIONS SO THAT A SUITABLE DESIGN OF ROADBED WITH CUTS, SLOPES AND DRAINAGE, CAN BE MADE AND CONSTRUCTION CAN PROCEED. WITH SOME CHANGE IN EMPHASIS, THE SAME STEPS CAN BE APPLIED TO INVESTIGATIONS FOR STRUCTURAL FOUNDATIONS AND EARTHWORKS. SITE INVESTIGATIONS ARE USUALLY DONE IN TWO PHASES: (1) REVIEW OF INFORMATION AVAILABLE FROM PUBLISHED SOURCES AND PREVIOUS INVESTIGATIONS, SUPPLEMENTED BY SITE RECONNAISSANCE; AND (2) COLLECTION OF DETAILED KNOWLEDGE OF SOIL, ROCK AND GROUNDWATER CONDITIONS BY EXPLORATION AND SAMPLING, FIELD MEASUREMENTS AND LABORATORY TESTS. SECTION 2, ENTITLED DESIGN, COVERS THE SUBJECT AREAS OF CUTS, FILLS, AND DRAINAGE, AS WELL AS ROADBED DESIGN. THE FINAL SECTION, ENTITLED CONSTRUCTION, CONSISTS OF SPECIFICATIONS FOR CLEARING AND GRUBBING, EXCAVATION AND GRADING, PLACING OF SUBBALLAST MATERIAL, AND MULCHING AND SEEDING FOR RAILWAY CONSTRUCTION. THE INDIVIDUAL SPECIFICATION CLAUSES ARE ACCOMPANIED BY NOTES TO EXPLAIN AND LIMIT THEIR APPLICATION. THE SPECIFICATIONS ARE INTENDED AS A REFERENCE FROM WHICH SUITABLE REQUIREMENTS FOR A PARTICULAR CONTRACT CAN BE CHOSEN BY STRIKINGOUT CLAUSES AND MAKING SPECIFIC ADDITIONS WHERE REQUIRED. FOR THIS REASON THE CLAUSES ARE DETAILED ENOUGH TO APPLY TO LARGE CONTRACTS BUT CAPABLE OF BEING CONSIDERABLY SHORTENED FOR SMALL CONTRACTS.

  • Authors:
    • Peckover, F L
  • Publication Date: 1972-11

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Filing Info

  • Accession Number: 00233456
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin
  • Files: TRIS
  • Created Date: May 15 1974 12:00AM