A rural two-lane road has a two-way ADT of 6915 vehicles per day. Transportation planners forecast that this road will carry 9660 vpd 10 years from now. What will be the road's DHV 10 years from now? Will more lanes be need to be added by that future year? Assume that a rural road has a capacity of 2000 vphpl.

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.