A slight rotation of the end fitting (elbow or tee) may be necessary to accommodate a sloped pipe.Check out the pros and cons of ABS vs PVC pipe here.Dry fit PVC/ABS components first to ensure there is enough space to properly slope the entire pipe.Same logic with 1/8″ slope, 1/16″ slope, etc. When the bubble on a level is about 1/4 of the way past the line it is about a 1/4″ slope.Use the longest level possible for your application for the best accuracy.
SLOPE GRADIENT CALCULATOR CODE
If you live in one of the following states that does not follow the IPC, please check with your local state code for the required drainage slopes:Īlaska-California-Hawaii-Idaho-Kentucky-Louisiana-Main-Massachussets-Minnesota-Montana-New Jersey-North Dakota-Oregon-South Dakota-Wisconsin Tips on Calculating Drain Pipe Slopes The International Plumbing Code states what these slopes should be.Īccording to the International Code Council, 35 states follow the International Plumbing Code. The slopes given in the calculator vary based on the diameter of the pipe. It will automatically calculate the angle of any pipe you put it on top of. If you want to make things really easy when getting the proper pitch, get yourself a digital level like this one: If you just want to see the required slope per foot, skip this step. This will allow the total pipe drop (or fall) to be calculated. Next, measure the length of the pipe you are working with. If you need to know the thickness, outside diameter or inside diameter of a PVC pipe, check out this calculator.
All the fixtures in your house will connect to a main drain line, which is usually 4″ in diameter. For household sinks, the drain pipe diameter is often either 1.5″ or 2″. The following diagram lays out the different terms that are used in the calculator:įirst, figure out the diameter of the pipe you are working with.
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