Due to the ever growing human needs, many multi storied buildings, large sky scrapers and very large bridges are being developed. Due to some extreme environmental conditions there occur minute cracks inside the wall. These cracks, with time, protrude towards the end of pillar or wall, finally causing the buildings or bridges to collapse. Identifying these cracks in the very early stage (just after formation inside the pillar) can help us to get rid of disaster and as well as necessary measures
