Shift work occurs in a work schedule that utilizes 24 hours a day and occasionally, 7 days a week, to keep an organization operating. Shift work occurs whenever 24-hour coverage is necessary or when a 24 hour day optimizes work output and productivity.
You want to cut at a 45-degree angle so that the PVC ends in a sharp point. The rest is just a matter of cementing the PVC to the adapter and attaching it to your hose. Trench, Then Tunnel. The first step in tunneling under a sidewalk is to dig a trench perpendicular to the sidewalk. You want it to be deep enough to let you tunnel several inches below the bottom of the sidewalk and as long as the PVC pipe you attached to the hose.
You will literally see the dirt and grime lift off the concrete. After you have scrubbed it good, hook up the water hose to your brush, turn on the water, and scrub some more while rinsing the sidewalk off. Step five. Depending on how dirty your sidewalk is, you may have to repeat the cleaning process twice. I did. After the second cleaning, I still had some little black spots lingering just near the porch steps. Since this sidewalk hadnât been cleaned in the history of ever, they werenât budging very easily.