A Barnes and Books is interested in purchasing a two-story building for a new

retail store. They plan to use the first floor as the display/sales area and the

second floor for storage of inventory. Before buying the property, they have sked

you to verify the building will be safe for the intended use. You must determine if

the interior columns will carry a load of 32 kips (32,000 lbs.), the columns rest on

spread footings which are 4'-0" X 6'-0" X 1'-6" thick. Note the column load does

not include the weight of the footing. If the footing rests on silty sand can the

Does footing safely carry the column load?

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet