The document discusses various components of railroad track systems including points and crossings, turnouts, and crossings. It describes the purpose and components of turnouts, including switches, stock rails, V crossings, check rails, lead rails, and locking systems. It also discusses different types of crossings according to angle (acute, obtuse, right angle) and according to diversion (spring, gathering lines, diamond, scissors). Additional components discussed include ash pits, which collect ash from steam engines, and turn tables, which are used to turn railroad engines. Diagrams are provided to illustrate many of the components.

1. Prepared By:
K.R.THANKI
(BE Civil)
LECTURER CIVIL ENGINEERING DEPARTMENT
GOVERNMENT POLY TECHNIC ,
JUNAGADH,GUJARAT-INDIA.
11/22/2016
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2. Points and Crossings:
The arrangements by which different
routes, diverging from the first track,
are connected to faciliate the
diversion of trains from one track to
another track without any obstruction
are known as points and crossings.
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Points and Crossings:
K.R.THANKI
(BECivil)

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Turn out:
A complete set of points and crossings
provides for diverting the trains from a
main track to a branch track is known as
turn out.
K.R.THANKI
(BECivil)

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Turn out:
Right Hand Turn out:
Animated diagram of a right-hand railroad switch,
rail track A divides into two track B (the straight
track) and track C (the diverging track)
K.R.THANKI
(BECivil)

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Turn out:
Right Hand Turn out:
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(BECivil)

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Turn out:
Left Hand Turn out:
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(BECivil)

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Turn out:
Component parts and Functions :
1) A pair of Points (Switches):
A switch, turnout or [set of] points
is a mechanical installation enabling
railway trains to be guided from one
track to another.
K.R.THANKI
(BECivil)

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Turn out:
Switches
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(BECivil)

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Turn out:
Component parts and Functions :
2) A pair of Stock rails:
Stock rails along with their respective
tongue rails from a pair of switches or
points.
Function of stock rails is to facilitate
smooth working of tongue rails.
K.R.THANKI
(BECivil)

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Turn out:
Stock rails
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(BECivil)

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Turn out:
Component parts and Functions :
3) V Crossing:
The function of V crossing is to
provide gaps between the rails
tobe crossed so that wheel flanges
can pass through the gaps without
any obstruction.
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(BECivil)

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Turn out:
V Crossing
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(BECivil)

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Turn out:
Component parts and Functions :
4) Two check rails:
Function of these rails is to check
the tendency of wheels to
climb over the crossing.
K.R.THANKI
(BECivil)

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Turn out:
Two check rails
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(BECivil)

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Turn out:
Component parts and Functions :
5) Four lead rails:
Function of these rails is to Lead
the track from heel of
switches to the toe of
crossing.
K.R.THANKI
(BECivil)

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Turn out:
lead rails
K.R.THANKI
(BECivil)

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Turn out:
Component parts and Functions :
6) Switch tie plate:
Function of switch tie plate is to
maintain gauge distance at
front of switch.
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(BECivil)

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Turn out:
Component parts and Functions :
7) Stud(Stop):
A Bent plate which is jointed to
stock rail is called stop.
Function of stop is to maintain
the alignment.
K.R.THANKI
(BECivil)

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Turn out:
Component parts and Functions :
8) Side Chairs:
Function of Side chair is to
support the tongue rails
throughout their length.
K.R.THANKI
(BECivil)

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Turn out:
Component parts and Functions :
9) Stretcher bar:
Function of Stretcher bar is to
connects toes of both the
tongue rails so that each tongue
rail moves through same
distance.
K.R.THANKI
(BECivil)

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Turn out:
Component parts and Functions :
10)Rods,Cranks,Lever:
Function of Rods,Cranks,Lever
is to operate the points.
K.R.THANKI
(BECivil)

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Turn out:
Rods,Cranks,Lever
K.R.THANKI
(BECivil)

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Turn out:
Component parts and Functions :
11) Locking System:
Function of Locking System is to
Maintain timing between
signal and tong rails.
K.R.THANKI
(BECivil)

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Turn out:
Locking System
K.R.THANKI
(BECivil)

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Crossings:
Crossing:
The arrangements by which
different routes, are connected
without any obstructions is
called crossings.
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(BECivil)

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Crossings:
Crossing
Types:
According
to Angle
According
to
Diversion
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(BECivil)

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Crossings:
Acute Angle
Obtuse
Angle
Right
Angle
According to Angle
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(BECivil)

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Crossings:According to Diversion
Spring
Gathering
Lines
DiamondScissors
Crossover
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(BECivil)

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Crossings:
Acute angle
When angle of crossing rails
become acute angle then this
crossing is called Acute crossing
or V crossing or Frog.
According to Angle
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(BECivil)

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Crossings:
V crossing
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(BECivil)

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Crossings:
V crossing
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(BECivil)

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Crossings:
Obtuse Angle
When angle of crossing rails
become Obtuse angle then this
crossing is called Obtuse crossing.
According to Angle
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(BECivil)

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Crossings:
Obtuse crossing
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(BECivil)

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Crossings:
Right angle or Square
When angle of crossing rails
become Right angle then this
crossing is called Right angle
crossing or Square crossing.
According to Angle
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(BECivil)

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Crossings:
Right angle crossing
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(BECivil)

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Crossings:
Spring Crossing:
In this crossing wing rail is strongly
connected to V part by
helical spring so that’s why this
crosssing is called spring crossing.
These crossings used in USA but not in
INDIA.
According to Diversion
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(BECivil)

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Crossings:
Spring Crossing
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(BECivil)

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Crossings:
Crossover Crossing
Function of this crossing is to
connect two parallel
or diverging tracks.
According to Diversion
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(BECivil)

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Crossings:
Crossover
Crossing
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(BECivil)

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Crossings:
Scissors Crossing(Double cross):
This type of crossing consists
4 pair of switch
6 Acute crossings
2 Obtuse crossings
check rails
And this type is use at goods yard.
According to Diversion
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(BECivil)

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Crossings:
Double cross
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(BECivil)

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Crossings:
Diamond Crossing
When two tracks crosses each
other at less than 90 angle then
it forms diamond shape so it
is called Diamond Crossing
According to Diversion
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(BECivil)

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Crossings:
Diamond Crossing
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(BECivil)

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Crossings:
Diamond Crossing
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(BECivil)

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Crossings:
Gathering Lines:
When there is more than
two track divert from one
line then it is called
Gathering lines.
According to Diversion
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(BECivil)

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Crossings:
Gathering Lines
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(BECivil)

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Crossings:
Gathering Lines
K.R.THANKI
(BECivil)

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Ash pit:
Functions of Ash pit :
To collect ash which are
produced from steam engine.
Depth of ash pit varies from
0.76m to1.20m and constructed
from concrete.
K.R.THANKI
(BECivil)

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Ash pit
Ash pit:
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(BECivil)

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Turn Table:
Function of Turn Table:
To Turn the engine.
K.R.THANKI
(BECivil)

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Turn Table
Turn Table:
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(BECivil)

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Turn Table
Turn Table:
K.R.THANKI
(BECivil)

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K.R.THANKI
(BECivil)
THANK YOU………
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