When calculating friction loss in a sprinkler system, it is generally accepted that a 90° standard elbow of 2 in. (50 mm) in diameter is the equivalent of:
When calculating friction loss in a sprinkler system, it is generally accepted that a 90° standard elbow of 2 in. (50 mm) in diameter is the equivalent of:
When calculating friction loss in a sprinkler system, a 90° standard elbow of 2 inches (50 mm) in diameter is generally accepted to be equivalent to 5 feet (1.5 meters) of pipe. This equivalency is used to account for the additional resistance to water flow caused by the change in direction within the elbow fitting.
Correct Answer is C: 5 feet of pipe (1.5 m), refer to the Section 15, chapter 3 , page 15-57
ANS: C. FPH 15-57