Link — Box Culvert Design Calculations Xls

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and that all safety factors (FS) for sliding and overturning are satisfied. Input: Wheel load distribution through soil fill

Input Data: Enter your site-specific data in the yellow-shaded cells (Span, Rise, Fill Depth, Soil Density). Input: Soil unit weight (γ)

General RCC Design: For standard metric calculations (e.g., 1.4m x 1.5m), Scribd hosts detailed Excel-based sheets that include weight of slabs, lateral pressure intensity, and reinforcement spacing.

3. Live Loads (HS-20, HL-93, or AASHTO)

• Input: Wheel load distribution through soil fill.
• Calculation: Impact factor + spreading via 1:1 or 1.75:1 slope (AASHTO).
• Output: Live load surcharge pressure on top slab.

2. Earth Pressure Loads (Vertical & Horizontal)

• Input: Soil unit weight (γ), angle of internal friction (φ), height of fill above culvert.
• Calculation: Rankine or Coulomb active pressure coefficients.
• Output: Equivalent fluid pressure (psf per ft of depth).

| Design Parameter | Formula | XLS Calculation | | --- | --- | --- | | Bending Moment (Mu) | Mu = (w x L^2) / 8 | =(B2*C2^2)/8 | | Shear Force (Vu) | Vu = (w x L) / 2 | =(B2*C2)/2 | | Load Distribution | P = (γ x H) | =B2*C3 | | Reinforcement | As = (Mu / (0.9 x fy x d)) | =(B2*C2)/(0.9*B3*C4) |

Guide to Box Culvert Design Calculations: Key Methods and XLS Resources