The structures, or Bridges and Buildings, as well as their components, must be built to withstand the prescribed wind loads. Wind load-resisting structures, including structural components, components, and cladding, must be designed to withstand shearing, sliding, overturning, and uplifting forces as a result of wind forces. Because wind loads are a component of rational loads, following a standard and tested building code can be used to provide this function. The Bangladesh National Building Code (BNBC) and the Japan Road Association (JRA) were issued in 1993 and 1947, respectively, to fulfill this purpose in Bangladesh and Japan, respectively. Because of the way lateral loads are applied and handled in various codes, the antedated 1993 BNBC is replaced by a subsequent BNBC code that is commonly named the BNBC 2020, which was issued in Bangladesh in 2021. In this paper, the BNBC codes are studied and compared with each other and with JRA 2012, AASHTO 2012, AASHTO 2020, and ASCE 7-05. The investigation reveals that the percentages of the basic wind speed increase according to BNBC 1993 and BNBC 2020 significantly increased compared to the recent codes, but the investigation also reveals that the designed wind pressure in different exposures is slightly higher according to BNBC 1993 than BNBC 2020. Design wind pressure and applied wind load according to BNBC 2020 is equal to or higher than ASCE 7-05. Designed wind pressure is comparatively less and slightly higher for BNBC 2020 compared to AASHTO 2012 and AASHTO 2020. JRA 2012 has the greatest design wind pressure value for all the cases. The main purpose of the study will be to apply wind loads to bridge structures using BNBC, and then compare these results with those obtained using other codes as mentioned in BNBC. Because there is no specific guideline for the use of wind loads in BNBC.

Keywords : COMPARISON OF WIND LOAD, BANGLADESH NATIONAL BUILDING CODE (BNBC), BNBC 1993 BNBC 2020, JRA, JRA 2012, AASHTO 2012, AASHTO 2020, ASCE 7-05, FACTORED TOTAL WIND PRESSURE.