Abstarct: At this thesis is attemped to study the effect of structure geometrical parameters on response modification factor, overstrength factor, ductility ratio, strength reduction factor due to ductility, structure period and… . Response modification factor are estimated from 4 method for each model. The main headlines at this research on respone modification factore are : 1- The effect of structure height 2- The effect of plan dimension ratio on regular and irregular structure 3- The effect of opening percent on regular and irregular structure 4- The effect of increase plan surface by increase the beam length 5- The effect of number of span 6- Exhibition formulate for effect of structure height and number of span At first, all of structures are modeled by Etabs Nonlinear ver9.7, and accroding to the iranian standard ( 2800), AISC-ASD89 and code 385 are designed. 120 model are used in this research and on other terms are nominated, baxse on instruction FEMA-356, nonlinear static analysis on models is performed by SAP2000 ver14.2 . Finally, the seismic components of these structures such as displacement target, period, ductility ratio, ductility factor and over strength load factor, is calculated. The result show that the effect of plan dimension ratio and models height are so sensible on seismic components of these structures specially on response modification factor, but other main headlines such as effect of number of span, increase the plan surface and opening percent on plan, are have lower effect on response modification factor.