Prediction of California Bearing Ratio of Granular Soil by Multivariate Regression and Gene Expression Programming

Table 1

Ministry of transportation specification limits or gradation of the subbase layer.

Sieve size designation	MOT specification limits (% passing)
	Upper limit	Lower limit
2″	100	100
1 1/2″ 1″	100	90
1″	85	55
3/4″	80	50
3/8″	70	40
No. 4	60	30
No. 10	50	20
No. 40	30	10
No. 200	15	0