RAIL TRACK LAYOUT ( WEEK 1) Flashcards
What are running rails?
The steel bars that the train wheels run on
What are the sleepers and what is their function?
Sleepers are the horizontal supports for the rails. They keep the rails at the correct distance apart (gauge) and distribute the load from the rails to the ballast.
What is the ballast?
Ballast is the layer of crushed stone or gravel under and around the sleepers. Provides stability, drainage and helps maintain the track alignment by keeping the sleepers in place.
What are the fastenings?
Fastenings are the components that attach the rails to the sleepers. They secure the rails to the sleepers, maintaining the gauge and preventing rail movement.
What is the cess?
The cess is the space Extending from the running rail all the way to the railway boundary fence (the area alongside the railway).
What is the “ four foot”?
The space between one set of rails
What is the “ six foot”?
The space between 2 running lines ( normal distance apart)
What is the “ ten foot”?
The “ ten foot” is the space between 2 pairs of running rails ( if they are the normal distance apart)
What are facing points?
Facing Points are diverging points ( main track to another) that allow a train to leave the current line and switch to another.
What are trailing points?
Trading points are converging points that allow a train to join the main line.
What are trap points and where are they installed?
Trap points are installed at the exit from a siding or merging route. They are designed to derail unauthorised train movements to protect the main track.
What are catch points and where are they installed?
Catch points are installed on a gradient to derail vehicles running backwards in the wrong direction. These points maybe passive (unworked) if trains usually travel over them in only one direction.
