CSA S6-25 has modified…

CSA S6-25 has modified minimum stirrup and tie bend diameters. For bars with a yield strength of 500 MPa or greater the bend diameter is now 5db instead of 4db previously. This creates inconsistencies between CSA S6-25 and SSD 112.0001 for bend diameters shown. Large stirrups bend diameters will create additional challenges for CIP components that require single ties to be installed. For precast components, there is often even more reinforcing steel congestion where larger bend diameters will cause conflicts. For the MTO NU Girder SSD, the main stirrups in the girder would not fit within the specified cover if fabricated as shown with the larger bend diameter.

Has consideration been given to make an exception to CSA S6-25 for stirrup bend diameters? Or will standard details be modified to suit the revised bend diameters?