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We have been trying to upgrade
|Date||February 18, 2015|
|Attachment||Design Manual 1E-6.pdf|
First, in the BA-201 drawing there should be 1 more 6-ft long post upstream of the w-to-thrie transition piece at a 37.5” spacing. This also moves the post locations away from splices for the MGS. Don’t know if that post is considered a part of the standard MGS (so it’s on another drawing set), but I figured I would mention it.
Your BA-601 plan shows the option for a curb under the transition. Recall, if a curb is present, then the guardrail placed immediately upstream of the w-to-thrie transition segment nested needs to be nested for 12.5 ft (refer to report TRP-03-291-14). You should note that in your drawing set.
Finally, there are recommendations for the necessary length of guardrail upstream of the transition within the conclusion sections of reports TRP-03-291-14 (page 137) and TRP-03-210-10. These reports are available on our website (mwrsf.unl.edu). Note, the recommendations are identical in reference to the W-to-thrie transition segment. Please refer to these recommendations as there are different criteria for (1) total length, (2) terminal length, and (3) length prior to a guardrail flare.
Let me know if you have further questions.
|Date||February 19, 2015|
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