@article{(Open Science Index):https://publications.waset.org/pdf/12637,
	  title     = {Assessment the Effect of Setback in Height of Frame on Reinforcement Structures},
	  author    = {Farshad Mehrabi and  Ali kheirodin and  Mohsen Gerami},
	  country	= {},
	  institution	= {},
	  abstract     = {Ambiguities in effects of earthquake on various
structures in all earthquake codes would necessitate more study and
research concerning influential factors on dynamic behavior.
Previous studies which were done on different features in different
buildings play a major role in the type of response a structure makes
to lateral vibrations. Diagnosing each of these irregularities can help
structure designers in choosing appropriate setbacks for decreasing
possible damages. Therefore vertical setback is one of the irregularity
factors in the height of the building where can be seen in skyscrapers
and hotels. Previous researches reveal notable changes in the place of
these setbacks showing dynamic response of the structure.
Consequently analyzing 48 models of concrete frames for 3, 6 and 9
stories heights with three different bays in general shape of a surface
decline by height have been constructed in ETABS2000 software,
and then the shape effect of each and every one of these frames in
period scale has been discussed. The result of this study reveals that
not only mass, stiffness and height but also shape of the frame is
	    journal   = {International Journal of Civil and Environmental Engineering},
	  volume    = {5},
	  number    = {11},
	  year      = {2011},
	  pages     = {634 - 636},
	  ee        = {https://publications.waset.org/pdf/12637},
	  url   	= {https://publications.waset.org/vol/59},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 59, 2011},