The data given below pertain to the design of a flexible

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The data given below pertain to the design of a flexible pavement.
Initial trafic = 1213 cvpd
Traffic growth rate = 8 percent per annum
Design life = 12 years
Vehicle damage factor = 2.5
Distribution factor = 1.0
The design traffic in terms of million standard axles (msa) to be catered would be

1. 0.06 msa
2. 8.40 msa
3. 21.00 msa
4. 32.26 msa

Correct Option: C

Standard axle =	365 × A [ (1 + r)ⁿ - 1]	× F
	r

=	365 × 1213 [ (1 + 0.08)¹² - 1]	× 2.5
	0.08

= 21.005 × 10⁶ ≈ 21 msa