Deck Overhang

Similar to a conventional reinforced concrete deck slab, the design of a deck overhang of a grid deck needs to consider a vehicular crash loading applied to the barrier. Although Section 13 of the AASHTO LRFD (7th Edition, 2014) is developed for conventional reinforced concrete deck slabs, the provisions are applicable to grid decks. The design of the overhang of a metal grid deck with reinforced concrete must consider the three design cases provided in Article A13.4.1. Furthermore, the connection of the barrier to the deck must be given special attention by the designer, to ensure that the crashworthiness of the system is sufficient.