Forging new generations of engineers
This presentation is the property of its rightful owner.
Sponsored Links
1 / 24

Forging new generations of engineers PowerPoint PPT Presentation


  • 84 Views
  • Uploaded on
  • Presentation posted in: General

Forging new generations of engineers. Road Design. A Process for Road Layout. Road Design. Check the existing Topographical data. Road Design. Decide on the type of road and characteristics Freeway Arterial Collector Feeder. Road Design.

Download Presentation

Forging new generations of engineers

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Forging new generations of engineers

Forging new generations of engineers


A process for road layout

Road Design

A Process for Road Layout


Forging new generations of engineers

Road Design

  • Check the existing Topographical data


Forging new generations of engineers

Road Design

  • Decide on the type of road and characteristics

    • Freeway

    • Arterial

    • Collector

    • Feeder


Forging new generations of engineers

Road Design

Setting up a chart for survey data and control points


Forging new generations of engineers

Transit Line

Road Design

Setting up the 90° Intersection


Forging new generations of engineers

Road Design

  • Plan the Start of the Curve (PC)


Forging new generations of engineers

Road Design

Add information to the chart


Forging new generations of engineers

Layout the Curve

Road Design


Forging new generations of engineers

Road Design

Curve information

Knowns

R=300’

∆=33°34’

Now Calculate the Unknowns about the curve.


Forging new generations of engineers

Road Design

To find the distance from P.C. to P.T. use the formula


Forging new generations of engineers

Road Design


Forging new generations of engineers

Road Design

Convert 33°34’ to degrees

34’/60’=.567

33°34’ =33.567°


Forging new generations of engineers

Road Design

Back to the Formula

L=175.756’


Forging new generations of engineers

Road Design

Finding the angle of the 100’ chord (D)

Bisect the angle to create a Right Triangle

Inverse SinX=9.594°

D=2(9.594°)

D=19.1881°

D=19°11’


Forging new generations of engineers

Road Design

Add information to the chart


Forging new generations of engineers

Road Design

Continue laying out the road and points


Forging new generations of engineers

Road Design

To create the vertical profile of the road, lines are dropped from the station points and an exaggerated vertical scale is created. Elevation data from existing station points are plotted to a graph.


Forging new generations of engineers

Road Design

A line is plotted through the points. The line is then smoothed and parabolic transitions are added between slopes.


Forging new generations of engineers

Road Design

Vertical information is transferred back to the control points.


Forging new generations of engineers

  • Freeway: A road with limited access that generally handles between 1,000-1,300 cars per hour per lane.


Forging new generations of engineers

  • Arterial: Roads that carry between 400 to 800 cars per lane per hour depending on businesses,  parking, signs, and control signals.


Forging new generations of engineers

  • Collectors: Local roads that can generally carry 100-250 cars per lane per hour.


Forging new generations of engineers

  • Feeder: Local streets, Cul-de-sacs, or loops that service neighborhoods.


  • Login