Highway Engineering
The function of an expansion joint in rigid pavements is to

Relieve warping stresses
Resist stresses due to expansion
Relieve shrinkage stresses
Allow free expansion

ANSWER DOWNLOAD EXAMIANS APP

Highway Engineering
A traffic rotary is justified where

space is limited and costly
when traffic volume is less than 500 vehicles per hour
when traffic volume is more than 5000 vehicles per hour
number of intersecting roads is between 4 and 7

ANSWER DOWNLOAD EXAMIANS APP