The effective stress parameters for a fully saturated clay are known to be c′=15 kn/m2 and φ′=29°. in an unconsolidated-undrained triaxial test on a specimen of the same clay the all-round pressure was 250 kn/m2 and the principal stress difference at failure 134 kn/m2. what was the value of pore water pressure in this specimen at failure?

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?