Steel sleepers are ..... shaped in section.
The rails are welded by:
Bone shaped section of fish plate is commonly used for connecting:
The granular material spread on the formation of a railway track for the sleepers to rest upon is known as:
The recommended depth of ballast cushion on a curved portion of a track is provided under the ........ edge of the sleeper.
The minimum height of embankment above the highest flood mark in the area should be: