Option 1 is preferred for attachment to a 32” tall bridge rail. Any time you are connecting to a 32” tall barrier, you may eliminate the vertical slope on the front end of the buttress. We had a drawing sketched up for the project report illustrating a version of the buttress when attached to a 32” F-shape bridge rail (see below for reference). For any geometric variation of the standardized buttress, including this height change, the size and quantity of the steel rebar should remain the same. However, the shape may be slightly altered to fit within the various shapes, just as you noted in your attached drawing. We believe that the shorter height will remain MASH TL-3 crashworthy.
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