Use LRFD and select a W10 shape for an axially loaded column to meet the following specifications: - The length is 25 feet. - Both ends are pinned and there is bracing in the week direction at a point 10 feet from the top. - The service dead load is 150 kips, and the service live load is 320 kips.

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]