When earth cover is less than 2.0 feet, do not use soil interaction distribution formulas. Instead, apply the direct AASHTO HL-93 truck wheel loads directly to the top slab as a concentrated patch load, accounting for dynamic load allowance (impact factor, For depth ( ≥is greater than or equal to
A proper box culvert design requires breaking the structure down into its primary structural members:
By following this guide, you can ensure that your box culvert designs are accurate, reliable, and compliant with relevant codes and standards.
For more detailed examples and automated calculation tools, you can refer to: : Review the MnDOT LRFD Bridge Design Manual for LRFD-based examples.
Check shear capacity of top slab at face of wall.
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