Concrete curbs or combined curbs and gutters serve several important functions. Curbs collect water

from crowned pavements and convey it to points of collection, thus reducing the amount of water

that gets under the pavement. They outline the edges of pavements and provide easily definable

borders between traveled and untraveled surfaces. They confine pavement structures, especially if

the pavements are composed of layers of materials that must be compacted in-place. Curbs help

contain low speed traffic within the edges of pavements.

Standard cast insitu kerbs are 500mm wide. This is wide enough to fit an 80mm

electrical/telecommunications conduit when required. The top of the kerb is 275mm above the road

running surface.