The floor of a classroom is to be supported by the truss shown . Each truss is 5 m long and they are spaced 75 cm on centers (distance between 2 trusses). The floor itself is to be made from lightweight concrete that is 10 cm thick. Neglect the weight of the joists and the corrugated metal deck, and determine the load that acts along each truss. ( The total floor load Dead load + Live load).

Steam at a pressure of 100 kpa and a quality of 50% initially fills a rigid vessel having a volume of 0.5 m^3. the steam is then heated, causing the pressure in the vessel to rise to 150 kpa. determine: i. the mass of the steam in the vessel. ii. the temperature and quality of the steam after the heating process. ii the mass of the vapour, mg and liquid, m in the vessel after the heating process. if the steam in the vessel is now further heated, what would the pressure and temperature in the vessel be when all steam has turned into saturated vapour? b. sketch the processes in part (a) and part (b) on p-v and t-v diagrams, indicating clearly the temperatures, pressures and the paths. c. (0.59kg, 111.4°c, 73%, 0.4307kg, 0.1 593kg, 2.11 bar, 121.84°c)