The equivalent length of a 45° elbow for 6 in Schedule 10 pipe is often considered to be around 11.8 ft, accounting for friction loss and the impact on water flow. This equivalent length helps in hydraulic calculations to ensure the sprinkler system meets the required design criteria for pressure and flow.
References: NFPA 13 and hydraulic calculation principles used in the design and installation of sprinkler systems, including considerations for pipe fittings like elbows.
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