Abrittle material was measured to obtain its flexural strength, which follows a weibull distribution with a weibull modulus m = 1.5 and a scale parameter s0= 10 kpa. calculate the required flexural strength if the probability of survival for the material is 95%.

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.