1 / 9

SLOPES IV – Structure Span

SLOPES IV – Structure Span. Functional Floodplain Span (FFS). ACW. OHW. Paul R. Wirfs, P.E. Oregon Department of Transportation Engineering & Asset Management Unit Manager. SLOPES IV – Structure Span. Bridges and Culverts Good Engineering Judgment Streamlined Permitting Option

layne
Download Presentation

SLOPES IV – Structure Span

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. SLOPES IV – Structure Span Functional Floodplain Span (FFS) ACW OHW Paul R. Wirfs, P.E. Oregon Department of Transportation Engineering & Asset Management Unit Manager

  2. SLOPES IV – Structure Span • Bridges and Culverts • Good Engineering Judgment • Streamlined Permitting Option • Early Evaluation & Communication

  3. SLOPES III Active Channel Width Total Scour Depth Total Scour Elevation

  4. BRIDGE SCOUR

  5. Total Scour at a Bridge Functional Floodplain Span (FFS) Total Scour Depth Total Scour Elevation

  6. Functional Floodplain Span Single Span Structure 1.5 x Active Channel Width Multi-Span Structure 2.2 x Active Channel Width

  7. General Scour Prism Functional Floodplain Span (FFS) A ACW B OHW General Scour Depth General Scour Prism FFS = ACW + A + B

  8. Bridge Abutment Protection Required Because: Abutment Scour not considered Channel Migration Foundation on Erodible Materials

  9. http://www.oregon.gov/ODOT/HWY/ GEOENVIRONMENTAL/ ftp://ftp.odot.state.or.us/SLOPES_IV Paul R. Wirfs, P.E. Oregon Department of Transportation Engineering & Asset Management Unit Manager 503-986-3526

More Related