[1]- MacGregor, J. G., 1997, Reinforced Concrete, Mechanics and Design, 3rd Edition.
[2]-Sheikh, S. A., and Uzumeri, S. M., 1982, Analytical Model for Concrete Confinement in Tied Columnes, Journal of Structural Division, ASCE, 108, 12, 2703-2722.
[3]- Cohn, M. Z., and Ghosh, S. K., 2000, The Flextural Ductility of Reinforced Concrete Sections, S.M. Report No.100. Solid Mech. Dir., Univ of Waterloo.
[4]- Journal No. 120, 2001, Management and Planning Organization of Iran, Iran Aba Concrete Regulations.
[5]- Price list of the basic unit of buildings, 2009, Management and Planning Organization.
[6]-Maghsoudi, Ali Akbar, 1996, Ductility of reinforced concrete structures, especially in earthquake-prone areas, Shahid Bahonar University of Kerman.
)