I have a 120 x 90 feet rectangle lawn; Should I go with head to head distance of 45 feet (12 rotors, 3 zones) or with head to head distance of 30 feet (20 rotors, 4 zones). I have more then 14 GPM at 50 PSI after RPZ, with 1” pipe size. I am first time designing a sprinkler system. Any comments/suggestions would be appreciated.
