Abstract:
Bangladesh is an earthquake prone country as it lies along the border of the Eurasian and
Indo-Australian plates, where earthquakes of comparatively uniform intensity are generated
at regular intervals. This increase in earthquake activity is an indication of fresh tectonic
activity or propagation of fractures from the adjacent seismic zones. In the light of these after
various researches upgraded BNBC 2015 has been divided Bangladesh into four seismic
zones, namely Zone - 4, Zone - 3, Zone - 2, Zone - 1 being the most severed to least
respectively. The occurrence of earthquakes in an earthquake prone region cannot be
prevented. So it is suggested to follow seismic code in order to reduce the loss of life.
The present study is aimed to find out the variation of material costing for two (80 feet and
150 feet height) buildings in four seismic zones of Bangladesh. Framing systems of these two
building are considered as dual system reinforced concrete. Earthquake and other load are
considered as per BNBC 2015. Constant wind load is considered for these building analyses.
Analyses of these building are carried out by using ETABS 2016. Structural design and
seismic detailing of various structural elements are done based on as per BNBC 2015. Detail
structural drawings are prepared for these buildings to comparisons of material cost.
Comparative study has been carried on required materials cost for these building (beams,
columns and shear walls) among four seismic zones.
Average reinforcement, required of these structural elements (beams, columns and shears
walls) been calculated separately for four seismic zones of Bangladesh. It is found that
average reinforcements required per square feet of 150 feet height building are 1.63 kg, 1.87
kg, 2.08 kg and 2.35 kg in Zone -1, Zone -2, Zone -3 and Zone - 4, respectively. On the other
hand 1.44 kg, 1.61 kg, 1.76 kg and 2.09 kg reinforcements are required for square feet of 80
feet height building in Zone -1, Zone - 2 , Zone - 3 and Zone - 4, respectively.
Description:
All praise and profound gratitude to the almighty Allah who is the most beneficent and the
most merciful for allowing great opportunity and ability to bring this effort to fruition safely
and peacefully.
The author conveys his heartiest gratitude to his supervisor, Dr.Md. Soebur Rahman,
Instructor, Class - B, CE Dept, MIST, for his systematic support and supervision in the
dissertation. His guidance and suggestion worked as inspiration to unlock different new
avenues for research. It was indeed a unique opportunity and special privilege for the authors
to work with Dr.Md. Soebur Rahman, whose constant guidance made it possible to complete
this study successfully. His active interest in this topic and valuable advice was the source of
author’s inspiration.
The author also appreciatively remembers the assistance and encouragement of his friends
and well wishers and everyone related to carry out and complete his study. Finally, the author
acknowledges his parents, brother and sisters whose sacrifice mad his work possible.
