Abstract
The Bangladesh National Building Code (BNBC) specifies and regulates the general specifications for structural, architecture and design parameters in Bangladesh. In the last three decades, Civil Engineering techniques, knowledge and materials as well as design parameters have been modified as per requirement. As a consequence, BNBC 2010 was written to reflect the transition. In this study, a systematic and parametric structural analysis of a ten-story residential building was analyzed (ETABS 16.0.2 software) by using BNBC 1993 and BNBC 2020 for four different locations (Patuakhali, Chandpur, Rangpur and Moulovibazar) suited in several zones to demonstrate how lateral load affects structural analysis and design of high rise infrastructure. The decision making parameters for structural analysis and design are tremor and wind forces, story drift, wind and seismic shear, moment of unique beams and columns, and base shear for seismic forces according to BNBC 2020 vary significantly compared to BNBC 1993. In this study, the earthquake load varies from 7.42% to 59.78%, while wind force ranges from 19.16% to 36.14% in the x-direction and 49.51% to 63.78% for y-direction, and story drift for earthquake load ranges from 47.96% to 51.27% and for wind load ranges from 29.89% to 34.45%. The comparison of the aforesaid design parameters is depicted graphically, and relevant tables are presented in this research article. In comparison to BNBC 1993, the requirements of BNBC 2020 usually result in a less cost-effective design with a higher safety margin.
Highlights
The reinforced concrete structure (RC), susceptible to seismic excitation, should be suitable for strength, ductility, and stiffness to meet earthquake-resistant design criteria. [1] The arrangement of the fundamental building elements for rigidity and durability can regulate the reaction behavior of laterally loaded structures, and the damage recorded in earthquake structures was primarily due to their erroneous placement. [2, 3] Considering the increasing population, as well as lack of horizontal expansion, is not a reasonable solution
As the zoning map has been updated as well as the value has been increased in Bangladesh National Building Code (BNBC) 2020, there is a positive increase of base share compared to BNBC 1993
The latest base shear values among both codes in this article is indicated by BNBC 1993
Summary
The reinforced concrete structure (RC), susceptible to seismic excitation, should be suitable for strength, ductility, and stiffness to meet earthquake-resistant design criteria. [1] The arrangement of the fundamental building elements for rigidity and durability can regulate the reaction behavior of laterally loaded structures, and the damage recorded in earthquake structures was primarily due to their erroneous placement. [2, 3] Considering the increasing population, as well as lack of horizontal expansion, is not a reasonable solution. When houses and apartments are designed there are various structural issues occur such as lateral loads, side moving, stiffness and so on. Earthquake load affects, and wind load are prominent for high-rise structures. [6] Where high-rise structures have been built, several structural issues occur, such as the American Journal of Civil Engineering 2021; 9(4): 118-126 influence of lateral load, lateral moving, and rigidity on structure. The influence of lateral loads, such as earthquake and wind loads, is critical to consider. [4] In Bangladesh and other underdeveloped nations, the approach of earthquakes and wind analysis is used in a static analysis because of the lack of modern modeling and computing installations. With the increase in the number of high-rise structures, the code for design, detailing, and construction is increasingly significant. With the increase in the number of high-rise structures, the code for design, detailing, and construction is increasingly significant. [5]
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