Does MwRSF have any recommendations regarding TCB anchorage transitions for the following situations?
1. Transition from free-standing TCB to TCB using the strap anchorage
2. Transition from TCB using the strap anchorage to TCB using the stake anchorage
In the past, we have recommended that an approach transition does not need to be applied when freestanding barriers are attached to the steel strap tie-down system designed for use on concrete roadways and bridge decks.
Our best recommendation here would be to use the transition from free-standing to rigid barrier. The strap tie-down still has approximately 33" of deflection, so the transition is still needed. The transition should work better because the upstream end will have lower deflections.
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