Railroad Engineering 101: Session 38 - Classifications, Equipment, Track, Signals, Study Guides, Projects, Research of Civil Engineering

Download Railroad Engineering 101: Session 38 - Classifications, Equipment, Track, Signals and more Study Guides, Projects, Research Civil Engineering in PDF only on Docsity!

Creating Value …

… Providing Solutions

Railroad Engineering 101

Session 38

Tuesday, February 19, 2013

Presented by: David Wilcock

 Outline

 Overview of the Railroad

 Track

 Bridges

 Signal Systems

 Railroad Operations

 Federal Railroad Administration

 American Railway Engineering and Maintenance

Association

 Overview of the Railroad

 Classifications (Operating Revenues)

• Class 1: $250 M or more
• Class 2: $20.5 M - $249.9 M
• Class 3: Less than $20 M

 Classifications (Association of American Railroads

Types)

• Class I: $250 M or more
• Regional: 350 miles or more; $40 M or more
• Local
• Switching and Terminal

 Overview of the Railroad

 Class 1 Railroads – North America

– BNSF

• Canadian National
• Canadian Pacific
• CSX
• Ferromex
• Kansas City Southern
• KCS de Mexico
• Norfolk Southern
• Union Pacific
• Amtrak
• VIA Rail

 Overview of the Railroad

 Equipment - Locomotives

• All Units rated by Horsepower
• Horsepower is converted to Tractive Effort to propel locomotive
• Types: » Electric – Pantograph trolley or third rail shoe » Diesel-Electric – self contained electric power plant » Dual Mode – Can use either electric or diesel

 Overview of the Railroad

 Equipment - Freight Cars

• Boxcar
• Flatcar
• Gondola
• Covered Hopper
• Coal Hopper
• Tank Car
• Auto Racks
• Container “Tubs or Boats”

 Track

 Loads

 Rail

 Crossties

 Other Track Materials

 Ballast

 Sub-ballast

 Typical Track Section

 Roadway

 Special Trackwork

 Geometry

 Track Charts

 Track Structure - Loads

 Track – Rail

 Track – Crossties

 Materials

• Wood
• Concrete

 Functions

• Hold gage and line of rail
• Transmit train weight from rail to ballast
• Distributes train weight
• Provide a base to anchor rail
• Provide support to distribute load maintaining more uniform cross level of rails

 Track – Other Track Materials

 Joint Bars and Bolts

• Standard Joint
• Compromise Joint
• Insulated Joint

 Tie Plates

 Track Spikes

 Concrete Tie Fastenings

 Tie Plugs

 Rail Anchors

 Track – Ballast

 Function

• Support
• Distribution of Load
• Stability
• Drainage

 Track – Roadway

 Right of Way - Valuation Plans

 Track – Roadway

 Grade

• Generally as flat as possible: 2.5 to 3% is the general “rule of thumb” for maximum main line grades
• Compensated Grades: adjust for horizontal curve and/or stopping on grade (.03 to .05% reduction in grade/degree of curve)
• Ruling Grade: Limiting grade on a route