Design the two one-way slab S1, each with a dimension of 12 ft x 40 ft. Given the following conditions: • f ’ c = 4,000 psi; f y = 60,000 psi • Unit weight of concrete is 150 lbs/cu. ft • The slab carries a service live load of 100 lbs/sq. ft ; and a service dead load of 120 lbs/sq. ft (without including the weight of the slab) • Design the two S1 slabs and provide the sketch of your reinforcement

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.