What Specifications cover Exodermic™ design?
The Exodermic™ design is specifically covered in Section 9.8.2.4 of the LRFD code as “Unfilled Grid Deck Composite with Reinforced Concrete Slab”. Significant changes to this and related sections, and to LRFD coverage of fully and partially filled steel grid decks, were approved at the main AASHTO Bridge Subcommittee meeting in May, 2002 in Atlantic City. Exodermic™ design has traditionally been done with conservative provisions of the Standard Specification. See Design section.