3. Source of Moisture
Surface water due to rain, dew and snow.
Moisture due to capillary action.
Seepage from adjacent areas.
Hydroscopic (held-water).
13. Rail Track Drainage
Problems
Bad drainage? Ahaa, then wait for
the following are the rail track
problems!
Wet earth gets into
the ballast (clogging)
Ballast sinks into the
wet earth
14. Cont. Rail Track Drainage
Problems / Clogging
In KSA railways, we have dry clogging! Discuss