Deep beam shall be designed either by taking into account nonlinear distribution of strain or by Appendix A of Strut-and-Tie Models (STM) according to ACI 318(M) from version of 2002. Although STM is accepted as tool in design Discontinuity region (D-region) which mostly exist in Deep beam, Corbels, Dapped ends etc, it has been many modified by researchers. In this study we design deep beam by STMs which use simple truss for load distribution and the model of complex truss for load distribution compare with the ACI traditional which is designed by flexure design method and shear provided by concrete (Vc) as provided in special provisions section of 11.8 in ACI 318-99 [1]. This study aims to find the different and efficiency of deep beam design based on variation of parameter compiled from many samples selected from ACI traditional and two model of STMs, simple and complex load distribution.

ABSTRACT
 1.Introduction
 2. Deep beam design
  2.1 Deep beam design by STM(s)
  2.2 Deep beam by ACI Traditional Design
 3. Parameter study
 4. Comparison of design method by parameter study
 5. Conclusion
 References

• Uy Lymei(Department of Civil & Environmental Engineering, Konyang University)
• Byung-Jik Son(Department of Civil& Environmental Engineering, Konyang University.) Corresponding Author