$\theta$	Deviation in fiber orientation from the hoop direction
$f_{cu}^{\prime }$	Ultimate compressive strength of the FRP-confined concrete
${\epsilon }_{cu}^{\prime }$	Ultimate axial strain of the FRP-confined concrete
$E_t$	Total dissipated energy of the FRP-confined concrete
$E_1$	FRP modulus of elasticity in the fiber direction
$E_2$	FRP modulus of elasticity in the transverse direction
${\nu }_{12}$	FRP Poisson’s ratio in the plane
$G_{12}$	FRP shear modulus in the plane
$E_c$	Concrete modulus of elasticity
${\nu }_c$	Concrete Poisson’s ratio
$f_{co}^{\prime }$	Unconfined concrete compressive strength
$f_{cu}^{\prime }/f_{co}^{\prime }$	Strength improvement ratio
${\epsilon }_{co}$	Axial strain at the peak stress of unconfined concrete
${\epsilon }_{cu}^{\prime }/{\epsilon }_{co}$	Strain improvement ratio
$\phi$	Angle of friction in the DP plasticity model
K	Flow stress ratio in the DP plasticity model
$\beta$	Dilation angle in the DP plasticity model
${\epsilon }_c^p$	Axial plastic strain
$\rho$	Lateral stiffness ratio
$E_x$	FRP modulus of elasticity in hoop direction
$E_{frp}$	FRP modulus of elasticity
$t_{frp}$	FRP wrap thickness
D	Diameter of concrete cylinder
${\beta }_0$	Initial slope of $\beta$
$M_0$	A constant equal to 157,000
${\sigma }_l$	Lateral stress
${\epsilon }_l$	Lateral strain of the FRP wrap
${\epsilon }_c$	Concrete axial strain
${\sigma }_c$	Concrete axial stress
${\epsilon }^{*}{}_{frp}$	Ultimate tensile hoop strain of the FRP wrap
$K_l$	Lateral stiffness of FRP wrap
${\theta }_a$	Allowable limit of deviation in $\theta$
${\theta }_{a,95}$	Allowable limit of deviation in $\theta$ with 95% confidence
${\theta }_{a,99}$	Allowable limit of deviation in $\theta$ with 99% confidence