16.For determining the basic runway.length, the landing case requires that aircraft should come to a stop within p % of the landing distance. The value of p is

17.If the monthly mean of average daily temperature for the hottest month of the year is 25� C and the monthly mean of the maximum daily temperature of the same month of the year is 46� C, the airport reference temperature is

18.The capacity of parallel runway pattern depends upon

19.The minimum width of clearway is

20.As per ICAO recommendation, the rate of change of longitudinal gradient per 30 m length of vertical curve for A and B type of airports is limited to a maximum of