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Table 1 Variable names and descriptions for the statistical analysis.

From: Prediction of Stress Increase at Ultimate in Unbonded Tendons Using Sparse Principal Component Analysis

Variable name Notation Type
Variable part of the ACI prediction equation \(v_{ACI}\) Continuous
Variable part of the AASHTO prediction equation \(v_{AASHTO}\) Continuous
Loading type \(LT\) Categorical
Total span length \(L\) Continuous
Beam height \(h\) Continuous
Beam width \(b\) Continuous
Depth to prestressing reinforcement \(d_{ps}\) Continuous
Area of prestressing reinforcement \(A_{ps}\) Continuous
Ultimate tendon strength \(f_{pu}\) Continuous
Concrete strength \(f^{\prime}_{c}\) Continuous
Area of mild reinforcing steel on tension face \(A_{s}\) Continuous
Yield strength of mild reinforcing steel \(f_{y}\) Continuous
Depth to tension mild reinforcing steel from compression face \(d_{s}\) Continuous
Area of mild reinforcing steel on compression face \(A_{s}^{'}\) Continuous
Depth to compression mild reinforcing steel from compression face \(d_{s}^{'}\) Continuous
Effective stress in the prestressing reinforcement at time of testing \(f_{pe}\) Continuous
Modulus of elasticity of the prestressing reinforcement \(E_{ps}\) Continuous
Stress increase in unbonded tendons \(\Delta f_{ps}\) Continuous