Prediction of Punching Capacity of Slab-Column Connections without Transverse Reinforcement Based on a Backpropagation Neural Network

Table 2

Conversion relationships of concrete strength (f_c, , f_t, and f_cu).

Conversion relationship	Conversion factors
		0.76 (≤C50)		1 (≤C40)		0.8 (C20～C40)
		Linear interpolation; (C50∼C80)		Linear interpolation; (C40∼C80)		0.83 (C50); 0.86 (C60); 0.875 (C70); 0.89 (≥C80)
		0.82 (C80)		0.87 (C80)