27) Which of the following room in residential building need more air changes per hour, while comparing to bed room in residential building?

28) If the area of the building is same, which of the following building is cheaper compared to single storey?

29) Which of the following is the important advantage of orientation of building?

30) What is the minimum scale at which a building plan need to be drawn according to NBC 2005?

31) Which season gives more lighting to the building?