how many smoke detectors should there be in an apartment?
You're going to load that foundation with a lot of masonry. There is likely to be at least a bit of movement at first. You don't want to shear that sewer pipe. You can leave it in place, but fit a sleeve around it or wrap it to give it a bit of 'play'.
PVC is allowed to be encased within concrete and it will last longer the you and I will live. The problem is of easing your mind and a personal choice of if you can live with pipe being in the location it now occupies.
In the car, I would grab the seat belt release button and nothing else. In the house, I would grab my pets and then photo albums.
Look, I like the moon as much as the next guy, but it's far from perfect. It's not always around, and we can't always see it, so it's a lousy light source. It moves across the sky all night, so you can't use it for direction. It's orbit isn't consistent enough that we can use it to tell time (its around in the daytime almost as often as night). So really, it's only useful to look at. Even when it IS out, the light is so bight that you can't see the other stars as well. Serious astronomy is out of the question. Plus, it's covered in scars and craters. You claim god put it there, and yet every single facet of the things is evidence that it occurred naturally without any care about whether or not you might find it useful or pretty. There is not a single intelligent thing about it, it simply follows the known laws of physics.
Codes can vary from place to place, and as you note, your area may not even address it specifically. Long story short, PVC is fine under concrete. My area has made illegal ALL metallic pipes in ANY new construction application, so plastics are the only choice. Wrapping the pipe in my opinion is generally not necessary, unless you have hard freezing in the winter, which should not be the case in your area. If you want to do it though, it won't hurt anything. Sewer line? in PVC? are you sure? I'ts possible sure, but in most cases waste lines are run with ABS pipe it's cheaper. Either case though, you're fine to put it in concrete.