Please review and comment.
Latest changes:
Is a w8x21 " 7' a quality substitute for the w6x25 " 7' for posts 1-3?
These match the 2000 Texas Transportation Institute TTI testing to NCHRP 350 - Contract No. DTFH61-97-C-00039 as well as letter from Ron faller " Sept 26 2002.
Posts at the end of the nested thrie-beam and through the 6'-3" single thrie-beam and 6'-3" transition to w-beam follow testing performed by MwRSF Research Report No. TRP-03-210-10 "Design K".
Testing also known as:
Midwest States' Regional Pooled Fund Research Program
Fiscal Years 2008-2009 (Years 18-19)
Research Project Number SPR-3 (017)
NDOR Sponsoring Agency Code RPFP-08-05
The need for using two tests to justify the bridge approach section comes from the later test using a thrie beam bridge rail instead of transitioning to a concrete rail.
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