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The most common kitchen counter height is 36 inches, but it can vary from 30 to 45 inches. The standard kitchen sink is 8 inches deep, which means that the normal distance between a kitchen sink drain and the floor is 28 inches. This will vary, depending on the height of the counter and the depth of the sink bowl. In the bathroom, the sink drain is typically between 24 inches above the floor.
Washing Machine Drain Sizes. The standard for new washing machine drain sizes, according to the Universal Plumbing Code, is now 2 inches. The pipe should be between 18 and 30 inches high from the floor, while the P-trap should be between 6 and 18 inches from the floor.These standpipes connect into the home sewage system.onnecting a Washing Machine. The drain hose for most washing machines is usually between 1 and 1 1/2 inches wide. A gooseneck at the end slips into the top of the drain standpipe.