just wanted to let y'all know i'm taking a college course, its a irrigation class and it is awesome. just preparing y'all for all the questions i'll be asking and i hope y'all can give me the answers i need. irrigation seems like lots of fun and there is so much to learn, i am taking this class among other in the horticulture/landscaping field, and too bad i still have to take that 40 hour class before i can take my test to be a licensed irrigator well i hope y'all can put up with some questions, and dont get too mad with some questions. so far we've done irrigation equipment (heads and stuff), piping, and now we're learning all about the water pressure factors they seem easy, and hopefully it'll go smooth. thanks for reading.