I am designing a narrow concrete trench with proprietary traffic rated grating which spans between the walls. The wall height of the trench is in the order of 5 feet and the wall thickness is tentatively 6 inches. When the wheel load of 16 kips + impact is directly over the wall, how does this load distribute down the wall? What is a good assumption for the load distribution? The wheel loading will cause bending in the wall since the center of the grating support is eccentric with the centerline of the wall. The wall also must resist retained soil and traffic surcharge. Of course the trench has a bottom slab.
Any ideas will be welcomed.
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