A plumbing schematic or diagram is basic and necessary, if you live in a state or jurisdiction where you are permitted to do your own plumbing. Many states allow homeowners to do various plumbing jobs, especially repairs, so knowing a few of the plumbing symbols is important.
Sometimes called a plumbing "diagram", a plumbing schematic may be needed to get a plumbing permit and is important when you go to buy the parts.
If you upgrade, replace or move any type of plumbing fixture you may need a permit. Check with your local building department. The drawing (left) was made using only those six symbols (above) to produce the finished project (dwg. below).
If you’ve decided to do the plumbing yourself, great! Take your time and gather all the knowledge and information you can, then go scout out the parts. There are many types of pipes and fittings, but in today’s world, PVC sort of rules. Click the previous link to see the range of materials. To learn some of the things you can and cannot do yourself and how to think about your bathroom plumbing diagram visit this page.
Before you do anything, however, make sure you know how to shut off the main water supply to the house. Most homes have a shut-off valve in a small concrete box in the ground close to the street (left). A small rectangular, round cornered cover at ground level—with the word “Water” embossed on it—can be opened, and the shut-off valve closed using a tool called a Water Shut-Off Wrench (below), available at hardware stores and big boxes for a few dollars.
Every homeowner should have one of these for emergencies.
Finally, heres a plumbing symbols sheet that has all—and we mean all—of the symbols you’ll ever need. And, for more info and help on doing the plumbing yourself, see the carossel of books below. Mouse over any image to see customer ratings and prices. Click for more, plus purchasing options.