Which is the best floor to live in a high rise apartment ?

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In this video i have explained some technical points on which floor we can live comfortably in an high rise apartment building. Which floors should be avoided and which is the perfect floor to choose. What are the problems which may arise if we choose the wrong floor to live in an apartment are also explained in detail by a civil engineering point of view. Various factors such as lift breakdown, mosquitoes issue, ventilation, drainage overflow, noise pollution, privacy, water leakage, balcony / gallery and warming of the floor have been explained in detail. This video is thoroughly in English.