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We have had our contractor's mount hardware on top of our 32" bridge parapets to comply with OSHA fall requirements.
Here is one example.
I have concerns from a roadside design perspective that:
I have heard of 2x4 being used on our parapets and temporary barrier as well.
I wanted to get MwRSF's impression of what our contractors are doing.
|Date||July 22, 2015|
|Response||The concern with the addition of structures on existing barrier systems would be similar to those concerns with barrier performance raised in previous studies regarding pedestrian rails, combination bridge rails, and the Zone of Intrusion (ZOI) study. Additional structure on top of a barrier may pose a snag hazard, adversely affect vehicle stability, potentially create dangerous debris, and pose a hazard for partially ejected occupants or occupant heads among other concerns.
Thus, while there is a need for fall protection in critical areas, we would recommend that the fall protection concern be weighed against concerns for the effect on the safety performance of the barrier.
Development of safe fall protection hardware would likely require further research, design, and potential evaluation testing. additionally. the design of the fall protection may differ significantly depending on the type of barrier it is used on.
|Date||September 3, 2015|
130 Whittier Research Center
2200 Vine Street
Lincoln, NE 68583-0853
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