What is the take-off for six long radius 90° elbows on a 2" pipe?

The take-off for long radius 90° elbows in piping is determined by the standard practice of measuring how much additional length of pipe is required to accommodate the fitting. A long radius elbow has a radius that is longer than the pipe diameter, which typically means that you would calculate the take-off using a standard multiplier.

For a long radius elbow, the standard take-off is generally considered to be 1.5 times the diameter of the pipe. In the case of a 2" pipe, the take-off for one long radius elbow is 3". When working with multiple fittings, such as six elbows, the total take-off is calculated by multiplying the take-off for one elbow by the number of elbows. Therefore, for six long radius 90° elbows, the total take-off would be 6 multiplied by 3", which equals 18".

In this question, however, the problem asks for the take-off in terms of the number of elbows rather than the total length in inches. Since the take-off for one elbow is equivalent to a multiplier specifically for the fittings, the answer can be expressed as "3" when counting the number of fittings utilized, which represents how much additional "length" is considered in terms of pipe layout calculations.