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I have a
history question for you. We received a strike to a w-beam bullnose
installation last week and I’m trying to track down the test level and standard
this design successfully passed. In talking to all of our past roadside safety
personnel, they could only conclude it may have passed NCHRP 230 at TL-3
but weren’t certain. Minnesota and MwRSF were brought up as likely candidates
of historical information on this. Searching MwRSF, I could only find Q/A # 467 but the date wouldn’t
be old enough. Could either of you shed some light on the history of this
design?

An example
installation:

https://www.google.com/maps/@40.9637865,-91.5169176,3a,90y,152.25h,78.28t/data=!3m6!1e1!3m4!1sZQxMf9xhDSBTB7s01H0SYQ!2e0!7i13312!8i6656

Thank you!

We reviewed the original W-beam bullnose testing in some previous reports.

See below. If you have further questions, let me know.

Thanks

http://mwrsf.unl.edu/researchhub/files/Report122/TRP-03-73-98.pdf

http://mwrsf.unl.edu/researchhub/files/Report308/TRP-03-312-15.pdf

http://mwrsf.unl.edu/researchhub/files/Report288/TRP-03-296-14.pdf