A water main runs 1000 ft from a water tower to a subdivision. If the static pressure is 75psi when there is no flow, how high is the water tower? Use 64.2 lb/ft3 for the specific weight of water. 1.2 For the water main, the engineer is proposing a 15" diameter pipe. (cast iron) . The mayor wants to buy 12" diameter pipe from his brother-in-law for the same price. When the flow is maximum (about 500 gpm), what will the pressure be in the subdivision for each pipe? Use 1.05 x10-5 ft2/sec for the kinematic viscosity of water. 1.3 Will the mayor still get re-elected?