Types of road:- 1 Flexible pavements .... .. . 2 Rigid pavements Flexible pavement:- embankment thickness 3m,large size soil particles 75mm lumps and cloud. Liquid limit <50% ,plastic limit<25%, swelling and shrnkag<50%, cbr as per design Sub grade :- thickness 500mm it is large size of particles 50mm lumps and cloud.,effective cbr as per design GSB:- It is mixture of aggregate chips and stone dust large size of grains 65mm to 75 mm,it is crushed by 50%, CBR>30% plastic limit <8%, water content<2%, impact valve<40%. Confinement or new blanket. WMM:- It is mixture of aggregate and bindindig materials stone dust, moroum, flay ash,aggregate sizes 4.75mm to 20mm It is mixed with pre mix batching plant..homogeneous and unifarm materials.