An interstate highway pavement composed of an HMA surface course, a cement treated base course and a sand-gravel subbase is to be designed for an ESAL of 2 * 10^6 . The quality of drainage is considered poor with more than 30 % of time the pavement will be exposed to moisture levels approaching saturation. The material properties are summarized below: effective roadbed resilient modulus = 5500 psi, resilient modulus of subbase = 15000 psi, resilient modulus of cement-treated base is 60,000 psi and resilient modulus of HMA = 4.0 * 10^5 psi. Determine the thicknesses of the surface, base and subbase courses required by assuming a minimum thickness for HMA.

The parameter used to evaluate the strength of subgrade in rigid pavement is :a.CBR %b.Modulus of subgrade reactionc.Noned.K %

The soil will have the greatest drainage if it has:Very smooth textureA low temperatureSmall particlesBig particles

What is the formula for Olders Theory in Rigid Pavements

Why would you increase your following distance on wet pavement?*1 pointA. Decreased tractionB. Increased risk of hydroplaningC. Increased stopping distanceD. All of these

A rectangular lawn 70 meters by 50 meters has two roads each 6 meters wide running in the middle of it one parallel to length and the other parallel to breadth. The cost of gravelling the roads at 80 paise per sq meter isOptions280547.2None of these300.5