Table 1: Seismic road damage factors and corresponding quantized values.

Seismic Damage Factor	1	2	3	4	5	6	7
α1	6	7	8	9	10	11	12
	0.20	1.00	1.05	1.15	1.20	1.78	1.83
α2	Stony soil	Clay	Silt	Fine sand soil	Stage construction
	0.90	1.00	1.10	1.10	1.20
α3	I	II	III	IV
	0.90	1.00	1.10	1.30
α4	None	Slight	Medium	High
	1.00	1.05	1.15	1.40
α5	Low	Embankment & Cutting	Dig & Fill	Riverside
	1.00	1.10	1.30	1.35
α6	H≤1	1<H≤2	2<H≤3	H>3
	1.00	1.05	1.10	1.40
α7	Fortified	Not fortified	Damaged
	0.90	1.00	1.20