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... 1   MASH Railing Load Requirements for Bridge Deck Overhang Bridge rail and support guidance provided in the 9th edition of AASHTO LRFD Bridge Design Specifications (LRFD BDS) reflects the requirements of the superseded crash testing standard, NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features, rather than the current standard found in the 2nd edition of the Manual for Assessing Safety Hardware (MASH)
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... 2 MASH Railing Load Requirements for Bridge Deck Overhang distribution lengths, which are calculated using effective distribution angles through the barrier and overhang. Through the barrier, flexural demands can be assumed to distribute to Design Region A-A at 45 degrees measured from the extents of the yield-line mechanism, Lc.

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