When Plumbers Okc or your Okc Plumbers are assessing the job site on a ground rough in using the home owners engineered plans we usually have a little digging and we can lay all the drain pipe. This one is going to be a little different. There will be a lot more digging on this one. Usually it is the other way around because this home will be on a septic tank and not city sewer. It is a rural area out in the middle of a 360 acre track of land so no city water or sewer. So we always have about a Two foot stem wall for plenty of room for the plumbing (water lines & drain lines) with very little
digging. This one the home owner can do a little concrete work himself so no stem wall. Just a 2×4 laying on the ground after he scraped the grass off with his tractor. So there was a huge amount of digging and a lot of it was through rock and really hard ground making it way more work.
Usually we just measure, mark it off and stake where every drain will be. This way you can see where your drain is running and where to dig. This one was a little more work. You have to just roughly mark it then dig your main trunk lines digging past the drains then you can mark and stake the drains. If you drive your stake first as normal your stake gets dug up and pulled out of the way so you have to remeasure them all and stake them again.
Now you have most of it roughly dug so you can start laying some pipe. Usually starting with the main sewer stub out. On one like this it is going to be draining into a septic tank so you need to be stubbing out as shallow as possible. This is a huge two story house and the upstairs stub up is way across on the other side of the structure so we you have a lot more digging to keep it all under the concrete. In turn making the stub out deeper. Also making the septic tank deeper. When starting the drains you want to make sure they drain properly now and in the future. It is very important to size the pipe not only correctly but it needs to be on grade at 1/4″ per foot of linear foot of drain pipe. It makes it easier having a few scrap pieces of PVC pipe to lay in the ditch when installing you combos, tees long sweep 90s, 45s etc… Measuring twice cutting once. Making practice fits a couple of times before primer and gluing. Practicing and bedding with a little dirt.Then final gluing twist a tiny bit and holding until dry enough to not push apart. A few seconds on smaller pipe. One and a half inch and two inch. Longer on larger pipe. Three inch or four inch. Make sure it is solid. Bed it a little more with some fine dirt. Then double check your measurements and tape the drain risers to the stakes making sure they are level and about ten inches above the concrete floor. We make sure everything is straight. Looking very good going as far as when final gluing making sure all the lines on the pipe are straight up and showing nicely after all bedding is done. Even though it will never be seen again after final inspection and after they pour the slab floor. The line will need to be watered up. It is required to have a four foot head pressure on it.In some municipality’s to pass code but if it is below thirty two degrees or below they will let you slide.
Now we have the water lines the run. They are a lot less work but still need to Be run correctly and pass all local codes. We always use Upunar aqua pex water pipe. It is a cross link system and has a memory when you expand it. It is way better the regular pex pipe. If you are a contractor and have done their seminar they warranty their pipe and fittings twenty five years. Most other plumbers use the regular crimp ex. It is not as good and their fittings don’t stand up as good. All we have to do on the water lines is role it out to each fixture. Sleaving it and taping it to either stakes our the drain lines. We will manifold it together on the top out rough in.