My cable company(Comcast) keeps laying their cable along the edge of my townhomes yard and I keep cutting it with my edger. I have told them many times to lay it deeper. I am wondering if there is something in the code book that says it should or must me at a certain depth. I did a quick browse through my 2005 book but nothing stands out to me.
Study Guides for VDV / Structured Cabling Installers
No, nothing in the Code that covers this. I also understand your situation. It's tough to get the cable below the depth of your lawn edger when that's the same tool they use to create a slit to stomp the cable into.
Only way to get this right is to do it yourself. I would suggest some 1-1/2" PVC buried 18" deep. Then have them pull a new drop through it.
Install some PVC with a pull string in it. Then tell the lazy bums when they get there to just tie their cable to the string and pull on the other end.
They'll like something that reduces their work to almost nothing...and you'll get the cable where you wanted it.
BTW, when I had my satellite TV installed, I pre-wired my desired route with string. The installers wanted to take their own route and drill holes in my house, but they were DELIGHTED when they found out that their entire wiring job was reduced to tying a few knots and getting done early.
When I replaced my driveway I put 6 sleeves under it (2 water, 3 line voltage and a 2" for LV, phone, cable or whatever. One thing I did to help find them in 20 years is to cut a small triangle wedge of wood that points in line with the sleeve on both ends and nailed inside the form. It took a few minutes on my table saw to get them cut right. Now I have a notch in the edge of the concrete at each entrance and exit. As long as your sleeves don't cross you just count them down from the end.