Abstarct: Investigation and explantion of strong ground motions is of great importance in two fields of Structural Engineering (Analysis of Behavior of Structures view) and Earthquake Engineering (Analysis of Behavior of Ground view). For this purpose, here we initially deal with recognition of near-field and then will discuss impacts of this earthquake on structures. Significance and necessity of examination of near-field earthquakes is due to adjacency of cities and faults so as many faults are named after their adjacent cities or villages amongst them we can refer to faults of Eshtehard, Qum, Northern Tehran, Tabriz and Rey. Given to presence of active faults in many parts of Iran inclusive of Tehran and considering construction density of such cities, the majority of structures in these areas are located in fault vicinities. Subsequent to destructive earthquakes of Landers, Northridge and Kobe which considerably damaged structures with modern design codes, widespread studies were conducted to recognize near-field earthquakes. The main characteristics of this set of records is high frequency content and forward directivity effect. Forward directivity effect causes long-period pulses in records of earthquake. The main challenge this paper will deal with is how to include such effects in code design spectrum. The proposed method is a combination of methods employed in other codes. Along these lines, it is necessary, at the first step, to wholly recognize the area’s faults and then include some factors as FPGA , FPGV , FPGD FTd and FTs design spectrum. Besides appropriate efficiency this method enjoys simplicity which is a characteristic of building codes. In the final part we will also deal with nonlinear behavior of three short, middle and high frxames under near-field and far-field records and it will be suggested that long-period structures are more influenced by records of near-field earthquakes with pulse. To examine the behavior of structures, records of near faults and far faults are scaled whose results suggest that scaling of near field records causes disregard of their specifications and similarity of results of near field and far-field.