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Main. Sprinkler Head. Lateral. L/3. L/3. L/3. L. Number of Sprinkler Heads = L/3 . Lateral. L/3. Lateral. Main. L/3. Lateral. L/3. Lateral. Number of Laterals = L/3 + 1.
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Main Sprinkler Head Lateral L/3 L/3 L/3 L Number of Sprinkler Heads = L/3 Lateral L/3 Lateral Main L/3 Lateral L/3 Lateral Number of Laterals = L/3 + 1