An Extended Study on Building Regulations ‘Impact on Natural Ventilation in Apartment Buildings in Dhaka City

This paper is an extension of an earlier work on “building regulations‟ impact on natural ventilation in Dhaka‟s apartment buildings”. Four schemes of building regulations (each offering different „maximum allowable footprint‟ with a different „maximum building height‟) were examined. Due to unavailability of large computation resource, only bottom floors, least privileged in terms of wind access, were examined. It found that the scheme that offers 70% „maximum allowable footprint‟ with a 7-story „maximum building height‟ provides maximum ventilation in bottom floors; and could provide maximum ventilation in the rest of the floors as well. However, the study findings could not be generalized since it only examined the lowest floor. This study examined natural ventilation on topmost floor; and found that the same set of regulations provide maximum natural ventilation for topmost floors as well. Computational Fluid Dynamics tool and Energy Simulation tool were used to examine the natural ventilation potential.