After solving the frame for each load combination, the sheet outputs:

A well-organized double box culvert Excel sheet contains these worksheets:

Use VLOOKUP for bar area tables, and IF statements for ductility checks.

If you don’t want to build from scratch, several ready-to-use double box culvert design Excel sheets are available from engineering forums (CivilWeb, EngineeringBooksPDF, ExcelCalcs).

This is where an becomes indispensable. A well-structured double box culvert design Excel sheet can reduce calculation time by 70%, minimize human error, and provide instant parametric studies.

Design a double box culvert for Q = 10 m³/s, fill = 1.5 m, span per cell = 3.5 m, height = 2.8 m.