Question

The CBR is _______

(a) \(\frac{Test \,load}{standard \,load}*100\)

(b) \(\frac{standard \,load}{test \,load}*100\)

(c) \(\frac{2*Test\, load}{standard \,load}*100\)

(d) Test load*100

This question was posed to me in homework.

My enquiry is from Flexible Pavement topic in section Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

The correct answer is (a) \(\frac{Test \,load}{standard \,load}*100\)

Easiest explanation: The California bearing ratio (CBR) is defined as the ratio of the test load to the standard load, expressed as percentage of a given penetration of the plunger.

\(CBR=\frac{Test \,load}{standard \,load}*100.\)