Re: How to cut grooves in concrete sidewalk

I used the garden hose to install lawn sprinklers on the boulevard. I have a piece of 3/4" rigid  pvc pipe slightly longer than the width of the sidewalk and threaded for the garden hose. I put a plastic nozzle on the end which increases the pressure. It works very well. 
The downside is that the length of wire under the sidewalk probably won't be effective as a boundary wire.

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