Materials
Use concrete with a minimum
= 5.0 ksi, and Grade 60 reinforcing steel. Higher concrete strengths and steel grades may be used if needed in special cases.
= 5.0 ksi, and Grade 60 reinforcing steel. Higher concrete strengths and steel grades may be used if needed in special cases.
Use 0.6-in. low-relaxation prestressing strand with a specified tensile strength,
, of 270 ksi or high-strength steel bars meeting ASTM A722. All tendons and bars must be bonded.
, of 270 ksi or high-strength steel bars meeting ASTM A722. All tendons and bars must be bonded.
Provide post tensioning system in accordance with Item 426, “Post-Tensioning” of the
TxDOT Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges
.