Dear MwRSF,
I know from previous discussions that the system to anchor temporary barriers to a bridge deck is not to be used on decks with asphalt overlays.
Is there a minimum amount of asphalt that MwRSF would consider an acceptable (e.g. 1" or 2" of asphalt ) or does all asphalt need to be removed?
Would there be an issue of removing asphalt from just underneath the barrier (i.e. the driving lanes would still have asphalt), and anchoring in the barrier to the bridge deck? Essentially the barrier would be keyed into the asphalt.
I know that the limit of this height reduction would be around 3 inches. But, are there other concerns about limiting the height of the temporary barrier based on current crash testing?
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