1 / 12

CE 515 Railroad Engineering

CE 515 Railroad Engineering. Drainage Source: AREMA Ch. 5, J. Rose Lectures, Ch. 19. “Transportation exists to conquer space and time -”. Recommended Procedures. Existing Drainage Study Proposed Drainage System Flood Plain Encroachment Evaluation Erosion Control Evaluation.

johnathan
Download Presentation

CE 515 Railroad Engineering

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CE 515 Railroad Engineering Drainage Source: AREMA Ch. 5, J. Rose Lectures, Ch. 19 “Transportation exists to conquer space and time -”

  2. Recommended Procedures • Existing Drainage Study • Proposed Drainage System • Flood Plain Encroachment Evaluation • Erosion Control Evaluation J. Rose Lectures, Ch. 16, Slide 4

  3. Existing Drainage Study • USGS Quadrangle Map or Hydrologic Atlas for area • Plot existing and proposed ROW • Identify • floodplain & floodway • watershed areas • existing bridges, culverts, & problem areas • Sheet & concentrated flows • closed drainage systems • Select • outlet points for watershed area • hydrology criteria • Calculate/run model – assign flow rates • Add flow rates and hydrographs • Select proper hydraulic method to determine storm water elevations • Conduct a plan-in-hand filed review http://www.lanecounty.org/Planning/Flood_Info/images/Flood_logos/Mapleton_SFHA2.jpg

  4. Proposed Drainage System • Complete and review existing drainage study • Superimpose improvements on existing map • Locate new drainage features • Floodplain and wetland impacts? • Never relocate existing outlet point • Maintain existing watershed limits • Calculate new hydrology & hydraulics • Compare new data with existing data • Initiate permitting process http://redac.eng.usm.my/html/projects/Maktab%20Perguruan/image/Melaka1.jpg

  5. Flood Plain Encroachment Evaluation • Possible permitting reviews: • FEMA • Physical Map Change • Letter of Map Revision • Conditional Letter of Map Revision • Elevation Criteria • US Army Corps of Engineers • Excavation below normal water elevation • State Water Resources Dept. • Floodway • County (possibly) • Floodplain • Floodway • Compensatory Storage • Elevation Criteria Cedar Rapids and Iowa City Railway @ US 151 near Amana Iowa Department of Transportation, Office of Rail

  6. Erosion Control Evaluation http://www2.dot.state.oh.us/construction/OCA/Manuals/2006_MOP/Web_Manual/207TemporarySedimentControls_files/image020.jpg http://pro-kote.com/products/images/SiltFence.jpg http://www.ci.mil.wi.us/ImageLibrary/Groups/citySWMP/images/Ditch_Check.jpg

  7. What Happens when Drainage Fails?

  8. J. Rose Lectures, Ch. 19, Slide 20 J. Rose Lectures, Ch. 19, Slide 20

  9. J. Rose Lectures, Ch. 19, Slide 21 J. Rose Lectures, Ch. 19, Slide 21 J. Rose Lectures, Ch. 19, Slide 21

  10. Iowa, Chicago, & Eastern Railroad and Iowa 24 near Ft. Atkinson Iowa Department of Transportation Iowa Department of Transportation

  11. Repairing Drainage Problems • Subgrade settlement due to poor drainage PROBLEM: Water below this point won’t drain out J. Rose Lectures, Ch. 16, Slide 4 SOLUTION: Install sub-drain system J. Rose Lectures, Ch. 19, Slide 18

  12. Questions? Iowa Interstate Railroad at Cedar River near Moscow, IA http://www.iaisrr.com/node/73 Never underestimate the power of water!

More Related