If you are designing an open piping system to handle a water flow rate of 1000 GPM so that the friction head loss is not to exceed 3 feet per 100 feet, what is the minimum size schedule 40 pipe you can use?

If you are designing an open piping system to handle a water flow rate of 1000 GPM so that the friction head loss is not to exceed 3 feet per 100 feet, what is the minimum size schedule 40 pipe you can use?