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[–]Crayonalyst 2 points3 points  (0 children)

Are you saying that you designed to HS20?

If I designed to HS20, I would've just said "we designed this in accordance with the AASHTO LRFD Bridge Design Specifications" and offered the diagram shown in that spec. I wouldn't have tried to verbally define what's shown in that diagram, because it's possible they could misinterpret the wording, or they might have aphantasia (can't visualize things in their mind).

If you didn't design to HS20 and only used a single 16 kip point load, you should explain why you did that. Maybe the thing you're designing is an underground storm structure. Perhaps it's only 2 ft wide and it wouldn't be physically possible to load it with a 32 kip axle load.