Troubleshooting and Precautions

  • When placing CRCP on asphalt bases, both chairs and Transverse Bar Assemblies (TBAs) need base plates to prevent sinking into the base during warm weather.
  • Pinning the steel mat to the base should not be necessary and may adversely affect long-term performance.
  • Longitudinal reinforcement should be spaced to avoid longitudinal sawcut joints directly above a reinforcing bar.
  • Epoxy coated rebar should only be tied with coated tie wires and any damage to the epoxy coating should be repaired according to the manufacturer’s written instructions before construction.
  • Mechanical insertion of tiebars should be allowed as long as edge slumping is not a consistent problem.
  • Tack welding of reinforcing bars in the field should not be allowed because it can embrittle the steel.
  • Manholes and drop-inlets should be isolated from the CRCP, and a reinforcing bar should be placed around the perimeter of the obstruction.
  • Any increase in pavement thickness should be accompanied by an increase in reinforcement to maintain the desired steel percentage.
  • CRCP should not be tied to noise walls, retaining walls, or other structures without the pavement engineer’s approval. Typically, this is rarely if ever done on a given project.
  • Paving should not be allowed until reinforcement schematics have been approved and reinforcement has passed field inspection.