Box Culvert Design Calculations Eurocode 2021 Access

Technical Guide: Box Culvert Design Calculations to Eurocode 2 (EN 1992-1-1)

1. Introduction

A box culvert is a rigid frame structure typically used to convey water (drainage, streams) or as a pedestrian/equestrian underpass. In the context of Eurocode 2, a box culvert is analyzed as a closed frame. The design must satisfy Ultimate Limit State (ULS) for strength and Serviceability Limit State (SLS) for crack width and deflection control.

5. Worked Calculation Example (Brief)

Given:

• f_ck = 25 MPa, f_cd = α_cc × f_ck / γ_c (α_cc=0.85, γ_c=1.5).

Step 3: Structural Analysis (Frame Analysis)

Box culverts are analyzed as 2D rigid frames. box culvert design calculations eurocode 2021