InCIEC 2013 pp 75-84 | Cite as

Evaluation of Dowel-Bearing Strength for Wood Dowel Using ‘Spring Theory’

  • Rohana Hassan
  • Shaharin Hamid
  • Nity Azidah Mohammad Amini
  • Tengku Anita Raja Hussin
Conference paper


Dowel-bearing strength of wood base material is one of the important parameter to design the load carrying capacity of a timber joint. The information about the dowel-bearing strength using steel is available in National Design Standard (NDS, National Design Specification for Wood Construction Ameican Forest and Paper Association (AFPA) Washington DC, 2005). However none of these standards include dowel-bearing strength compressed using wood dowel. Very limited studies were published in determining the dowel-bearing strength of wood base material compressed with wood dowel. The ‘Spring Theory’ proposed by Schmidt and Daniels (Design Considerations for Mortise and Tenon Connections. Report for Timber Framers Guild. Becket. MA, 1999) was found reliable to be applied for European timber species. However, the capability of this theory in determining the dowel-bearing strength of wood based compressed with wood dowel has not be investigated for tropical timber. Therefore this study is aimed to investigate the capability of the ‘Spring Theory’ for 12.7 mm wood dowel. ‘Spring Theory’ is about the combination result of wood dowel compressed with steel block (WDCSB) and wood block compressed with the steel dowel (WBCSD). It was found that ‘Spring Theory’ value of Kempas is 34.81 Mpa. The value of the proportional, 5 % offset and maximum load of Kempas is 11.74, 18.12 and 50.64 kN respectively. The ‘Spring Theory’ was found capable and valid in determining the wood dowel of Kempas compressed with 12.7 mm wood dowel.


Dowel-bearing strength Malaysian timber ‘Spring theory’ Steel block Wood dowel 



The author would like to thank UiTM for funding the research through RAGS 600-RMI/RAGS 5/3 (51/2012) from Research Management Institute, Universiti Teknologi MARA.


  1. 1.
    NDS, National Design Specification for Wood Construction. (Ameican Forest and Paper Association (AFPA), Washington DC, 2005)Google Scholar
  2. 2.
    M.Z. Jumaat, A.B. Bakar, F.A.M. Razali, A.H. Rahim, J. Othman, in WCTE: “The Determination of the Embedment Strength of Malaysian Hardwood”. Proceedings of the 9th World Conference on Timber Engineering, (Portland, or, USA, 6–10August 2006), p. 126Google Scholar
  3. 3.
    D.R. Rammer, Parallel-to-grain dowel-bearing strength of two guatemalan hardwoods. For. Prod. J. 49(6), 77–87 (1999)Google Scholar
  4. 4.
    A. Awaludin, W. Smittakorn, T. Hirai, Bearing properties of Shorea obtusa beneath a laterally loaded bolt. J. Wood Sci. 53(3), 204–210 (2007)CrossRefGoogle Scholar
  5. 5.
    R.J. Schmidt, E.D. Daniels, Design Considerations for Mortise and Tenon Connections. Report for Timber Framers Guild. Becket, MA, (1999)Google Scholar
  6. 6.
    L.R.J. Whale, I. Smith, Mechanical Timber Joints, Research Rep. No. 18/86, Timber Research and Development Association, (High Wycombe, UK, 1987)Google Scholar
  7. 7.
    P.J. Cates, Dowel bearing strength and bolted connection behavior of oriented strand lumber. Master thesis, Department of Civil and Environment Engineering, Washington State University, 2002Google Scholar
  8. 8.
    American Standard Testing Method (ASTM) D 5764-97a, Standard Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Based Products, (Washington DC, 2007)Google Scholar

Copyright information

© Springer Science+Business Media Singapore 2014

Authors and Affiliations

  • Rohana Hassan
    • 1
  • Shaharin Hamid
    • 2
  • Nity Azidah Mohammad Amini
    • 3
  • Tengku Anita Raja Hussin
    • 3
  1. 1.Institute for Infrastructure Engineering and Sustainable Management (IIESM)UiTMShah AlamMalaysia
  2. 2.Faculty of Civil EngineeringUiTMShah AlamMalaysia
  3. 3.Postgraduate Students, Faculty of Civil EngineeringUiTMShah AlamMalaysia

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