Civil Engineering MCQAE Level Civil Engineering
The percolation factor (PF) in the design of irrigation canals for a silty soil channel with 50% of total area consisting of sandy strata is about:
Irrigation EngineeringPercolation FactorMEDIUM
Choose the correct answer
A
0.5
B
1.0
C
2.0
D
3.0
Correct Answer
C. 2.0
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Percolation factor (PF) accounts for the extra seepage losses in sandy / pervious soils along the canal. For mixed alluvial soils (50% sandy), PF = 2.0 (indicating actual water loss is double normal). PF ranges from 1.0 (stiff clay) to 3.0 (very sandy).
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