1.A municipality wants to sell 30 year bonds to pay for a new WWTP. Investors want a market rate of return on their money of 3.5% or higher for the tax free bonds. The City needs to raise $32.5m today. What would be the semi-annual cash payments that the City will have to make to the investors to retire the bonds and what will be the ultimate cost to the City of the bonds. Please show all work neccessary to answer the question in excel.
2.A circular sewer with a 1.5m inside diameter is designed for a flow rate of 15m^3/s when flowing full. Assume that the Manning roughness coefficient and Darcy friction factor are constant with depth of flow. The flow rate when the depth of flow is 0.50m is most nearly?