For a homogenous half space subjected to two circular loads shown below, it is the pavement structure for full depth asphalt road segment. For the specific point A which is located at the center of left wheel at a depth of 30cm determine, use Foster and Ahlvin. a) The vertical stress, b) Shear stress, c) Radial stress. d) Tangential stress 2. For the three-layer system shown in the figure below with a= 120mm, q= 800Kpa, h1= 200mm, h2 = 100mm, E1 = 3Gpa, E2 = 150Mpa, and E3 = 75Mpa, determine all the stresses and strains at the two interfaces on the axis of symmetry.

30cm 30cm 45cm
400KPa
E= 3.5GPa , ν =0.5

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 force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

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