Use Class H concrete with a minimum ${f_{ci}}^{\text{'}}=4.0$
ksi and ${f_c}^{\text{'}}=5.0$
ksi and a maximum ${f_{ci}}^{\text{'}}=6.0$
ksi and ${f_c}^{\text{'}}=8.5$
ksi. Any exceptions to these limits must be approved in writing by the TxDOT Bridge Division.

Use prestressing strand with a specified tensile strength, $f_{pu}$
of 270 ksi