: Actions on structures – Part 2: Traffic loads on bridges (defines Load Models LM1 to LM3). EN 1992-1-1 & EN 1992-2
: Use B16 bars @ 150 mm c/c ($A_s,prov = 1340 \text mm^2/\textm$). Check: $1340 > 1310$ (OK). box culvert design calculations eurocode 2021