Fig. 4.1.2: Longitudinal Cracking of Concrete ( http://irc.nrc-cnrc.gc.ca )

4.1.3     Corner Cracking

Corner cracks are also caused by non-uniform sub grade compaction. This type of crack typically suggests a loss of support beneath the concrete slab. As the name suggests, corner cracks form diagonally at the corners of a panel (as shown in Figure 4.1.3).

Fig. 4.1.3: Corner Cracking of Concrete ( http://irc.nrc-cnrc.gc.ca )