IADOT needs the following:
- 54-in. tall, single-face, reinforced concrete parapet with foundation system for use in shielding bridge piers according to AASHTO 3.?.?
- reinforcement design for the interior and end locations of wall and foundation
- design based on WsDOT report and other more recent TL-5 barriers with reinforced footings/grade beams/slabs
See the attached PDF file for a simplified drawing for a 54" tall, F-shape, TL-5 barrier. A few notes:
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