Estimate the pressure needed at the pumper truck in order to shoot water from the street level onto a fire on the roof of a five-story building. Assume, that height of five-story building is 46 ft. First choose an equation to model the flow. Are the assumptions and conditions for the use of Bernoulli’s Equation satisfied?

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)