A project has 5 floors of concrete columns, 24 inches on each side and 10 feet high. There are 30 columns per floor. Assume the lumber will be used 3 times and calculate the total cost to build, erect and remove the formwork. No foreman is needed since this is a non-union job. If tabular data is used, use average values. Assume the following material and labor rates. Plywood Lumber Column clampsS10/each which can be used repeatedly Form oil Carpenters Helpers - $25/sheet = $0.88/bf - $20/gal for 400 gal/SFCA application -$26.50/hour $15.00/hour

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.

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.

What is the main objective of using reheat rankine cycle?