I wanted to ask a clarification question on Report TRP -03-337-17, Length of Need and Minimum System Length for F-Shape Portable Concrete Barrier. My understanding from the report is 5 barrier sections are needed downstream of the beginning of the LON for free-standing TCSB intallations. My question is related to reducing or eliminating the need for these 5 sections.
KDOT's previous practice has been to eliminate the barrier sections upstream of the beginning of the LON if the installation is fully restrained. Is that still acceptable?
Additionally, I was curious to know if the 5 sections were still needed if the last 12'-6" section of TCSB was fully restrained or anchored with an impact attenuator, but the rest of the installation was free standing with the overall length of the installation still meeting the 9 section minimum. Please contact me if you have any questions.
Thanks,
Tom Rhoads
785-296-0322
thomas.rhoads@ks.gov
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