applied stress of 240 kPa on the ground surface. Between the depths of 21 and 27 m there is a layer of soft clay. The rest of the subsoil is dense sand. Compute the applied vertical pressure due to the weight of the building, at the following points located in a horizontal plane at mid-height of the compressible layer: directly below centerline of building; and 6, 12 and 18 m from the centerline.

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.