What is the take-off distance for an 8" pipe in a 90° butt weld ell?

The take-off distance for a pipe fitting refers to the length that the fitting adds to the total length of the pipe run when accounting for the fitting's curvature. For a standard 90° butt weld elbow, the take-off distance is generally determined based on the diameter of the pipe.

In this case, the diameter is 8 inches. The industry standard for determining the take-off distance for a 90° elbow is to use a multiplier of 1 for the diameter of the pipe. Therefore, for an 8-inch pipe, the take-off distance is simply the diameter itself, which is 8 inches. This is critical for accurate pipe layout in piping systems, ensuring that the required length of piping is measured and cut correctly to accommodate the bends and fittings without causing issues in flow or fitting alignment.

Understanding this concept is key for pipefitters to ensure proper installation and function in piping systems. Hence, the correct answer reflects the straightforward application of these industry standards to calculate the take-off distance for the specified elbow fitting.