IRC:112 allows dispersion of wheel loads through the soil fill at an angle of 45° horizontally and vertically (or 2V:1H slope). For a box with less than 600mm fill, the live load acts directly on the top slab.
Using the factored moments (M_u = 1.5 × M_service): box culvert design excel sheet as per irc
This section performs the Reinforced Concrete Design checks. IRC:112 allows dispersion of wheel loads through the
If you are building the sheet, here is how the critical cells should look: formulas compute the loads per IRC:
Common errors in box culvert design Excel sheets include:
Same as slabs, but treat as vertical member with moment from frame analysis.
Here, formulas compute the loads per IRC: