LEVEL OF SEISMIC PROTECTION IN DIFFERENT EDITTIONS OF THE EGYPTIAN CODE OF LOADS | ||
| JES. Journal of Engineering Sciences | ||
| Article 16, Volume 37, No 5, September and October 2009, Pages 1063-1079 PDF (494.17 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2009.127860 | ||
| Author | ||
| Waleed Abo El-Wafa Mohamed | ||
| Lecturer, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt. | ||
| Abstract | ||
| The last edition of the Egyptian Code of Loads (ECOL) was released by the end of year 2008. The seismic provisions in this edition are almost completely different compared with those in the 1993 edition while some specific changes are presented relative to the 2003 edition. The major significant changes in the seismic provisions revealed in the different editions are reviewed. The effect of the variation in these provisions between the different editions of the ECOL on the level of seismic protection presented by the code calculated base shear is analyzed and discussed. The analyzed provisions include seismic zones and mapping, period equations, soil site conditions, building importance factor, and ductility level. These provisions are applied to two types of structures which are moment resisting frames (MRF) and dual system consists of shear wall-moment resisting frames (SW-MRF). The considered height of buildings covers almost all code permitted range of heights. It is found that the provisions in the 1993 edition yield base shear much less than the values obtained using 2008 edition especially for low to medium height buildings located in medium and high seismic zones. | ||
| Keywords | ||
| Seismic codes; ECOL; equivalent static load method; seismic provisions | ||
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