Q. Illustrate Layout of corrugated beam barriers?

Layout of corrugated beam barriers is that the beams are corrugated in the longitudinal direction so as to it provides higher lateral stiffness with a thinner material. Furthermore the distance ofbeams posts and crashing vehicles are significantly increased.  

In case the beam barriers are tensioned, it's intended to create a stiff beam erected on comparatively weak posts. At the time of vehicle collision, posts would be separated from the beams and there will be lesserdeceleration experienced by the vehicles.

Fig: Beam barrier