Geometric Constraints

  • The maximum skew angle for box culverts is 45°.
  • Provide 1.5 in. of clear cover for reinforcement in cast-in-place concrete culverts.
  • Provide 1.0 in. of clear cover for reinforcement in precast concrete culverts.
  • Provide 2.0 in. of clear cover above the top layer of reinforcement in the top slab of "direct traffic" concrete culverts.