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from Mcgraw Hill Water supply and sewerage 1960

Water tight roof surfaces 0.70-0.95

Asphaltic pavements in good order 0.85-0.90

Stone and brick with cemented joints 0.75-0.85

Stone and brick with un-cemented joints 0.40-0.50

macadamized roadways 0.25-0.60

Gravel roadways and walks 0.15-0.30

Parks, gardens, lawns and meadows,

depending on surface slope and character of soil 0.05-0.25

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15y ago

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