Square and rectangle patterns
After pump installed, had Rainbird, Toro, and Orbit 'recommend' a system. The plans helped me with the rotors coverage, but have concern about the pop-up coverage along the street and narrow side of house. Each developed a two circuits on the sidewalk to street section (8' wide front street section and 9' wide side street and 300 feet long) and used overlapping semicircles with heads along sidwalk and street. Toro got really creative on the 9' wide section, and almost what I was thinking, using twin 4x30's placed a few feet apart, then repeated 15' later for that 140' run.
I was thinking using 9x15 Rainbird or 9x18 Toro rectangular pattern side strip. Not only would it decrease the # of heads and piping, it would take all the heads off the street, placing them along the sidewalk spraying towards the street. I e-mailed Toro asking about it and their reply was to keep it as drawn, aluding to a coverage issue if I used 9x18' placed 9' apart.
I guess my question is: 1) is there a coverage issue with overlapping 9' rectangular pattern where the overlapping semicircle is better? Did Toro not want to admit that there was a more efficient and cheaper way than drawn?
Additionally, Rainbird makes a 15x15 square pattern. Any problen using that down the left property line that is 15 ft to house/driveway in lieu of the half circles down both the property line and house/driveway?
Thanks.