transverse slope on highway
transverse slope on highway
(OP)
anybody has any idea of safe transverse (perpendicular to traffic direction)slope for highway?
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transverse slope on highway
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RE: transverse slope on highway
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RE: transverse slope on highway
Most DOT's have superelevation tables, based on speed and road widths. These would serve as a good starting point to determine maximum allowable cross-slopes.
RE: transverse slope on highway
You could try looking at http://nacto.org/docs/usdg/geometric_design_highwa...
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RE: transverse slope on highway
My case is not to find super elevation on horizontal curve. My road section is straight road.
Do I need to consider anything but drainage for transverse slope. Or 7% slope can cause any safety concern?
Sorry if I have caused any confusion.
RE: transverse slope on highway
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: transverse slope on highway
The link is a big help.
Thank you.
RE: transverse slope on highway
RE: transverse slope on highway
AASHTO Exhibit 4-4 from the link IRstuff provided shows a table indicating 1.5-2% for high wind, high traffic areas an 2-6% otherwise. There is considerable additional guidance given for selecting a specific slope.
What you call smoothness is also typical in specifications (1/4" in 10' is in our state DOT spec.) The biggest concern is usually "birdbaths" (spots that would collect a pocket of water (ice)).