THE DESIGN OF PARTIALLY PRESTRESSED WALLS AND SLABS TO SPECIFIED CRACK WIDTH CRITERIA

The research reported draws together the two aspects of partial prestressing and serviceability in the design and construction of concrete structures such as bridges. The report contributes to the matter of cracking in slabs and walls and also shows that current codes substantially underestimate shrinkage strains in concrete. A method for designing partially prestressed concrete slabs is derived in which the design determinant variables, surface strain, curvature, moment, level and distribution of both prestressed and non-prestressed reinforcement, are derived and expressed as dimensionless parameters. These parameters are presented in a series of charts which facilitate the design of slabs for a range of parameter combinations. Also included in the report are a number of worked examples which illustrate the application of the design method. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05490030
• Corporate Authors:

  National Roads Board, New Zealand

  Road Research Unit, P. O. Box 12-041
  Wellington,   New Zealand 
• Authors:
  • Chong, C K
  • Dean, J A
• Publication Date: 1984

Media Info

• Features: Figures; References; Tables;
• Pagination: 86 p.
• Serial:
  • Publication of: National Roads Board, New Zealand
  • Issue Number: 66
  • Publisher: National Roads Board, New Zealand
  • ISSN: 0549-0030

Subject/Index Terms

• TRT Terms: Beams; Bridges; Calculation; Charts; Concrete; Cracking; Curvature; Design; Design methods; Engineering moments; Location; Material reinforcement; Prestressed concrete; Reinforcing materials; Retaining walls; Shrinkage; Slabs; Specifications; Strain (Mechanics); Walls; Width
• Uncontrolled Terms: Concrete cracking; Design criteria
• Old TRIS Terms: Concrete shrinkage; Moments; Strains
• ITRD Terms: 3472: Beam; 3455: Bridge; 6464: Calculation; 6486: Chart; 5211: Cracking; 5595: Deformation; 9011: Design (overall design); 9061: Location; 4796: Prestressed concrete; 3471: Reinforcement (in mater); 3359: Retaining wall; 4743: Shrinkage; 3491: Slab; 177: Specifications
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00392742
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Apr 29 1985 12:00AM