Studying the Synergetic Effect of Point-Extraction and Longitudinal Ventilation on the Maximum Smoke Temperature and Back-Layering Length in Tunnel Fires

Table 4

Suggested model for predicting the maximum temperature (R_Squared = 99%).

Coded coefficients		SE coef	T value	value	VIF
Term	Coef
Constant	226.8	12	18.85	0
Height	41.99	4.68	8.97	0.001	1.43
Distance	4.11	5.43	0.76	0.491	1.29
L.V.	−41.47	6.33	−6.55	0.003	1.82
E.V	0.31	6.11	0.05	0.963	1.63
Distance × distance	16.6	8.41	1.97	0.12	1.03
L.V. × L.V.	14.5	10.9	1.33	0.254	1.36
E.V × E.V	6.66	9.35	0.71	0.515	1.27
Height × distance	−9.11	5.34	−1.71	0.163	1.24
Height × L.V.	−52.76	6.5	−8.12	0.001	1.95
Height × E.V.	5.9	7.08	0.83	0.451	2.19
Distance × L.V.	29.87	6.95	4.3	0.013	1.49
Distance × E.V	−19.99	7.05	−2.84	0.047	1.45
L.V. × E.V.	5.6	8.52	0.66	0.547	2.23