Differential movement can be foundation related or non foundations related. Differential movement nor related to foundations can be caused by several different things, but it is the junction of two different things." For example: a junction between two different material, such as, blockwork and brick work, which is the case of the cracks in all pillars.
Source: Holland, M. (2012). A practical guide to diagnosing structural movement in buildings. Chichester, West Sussex [England]: Wiley-Blackwell.
KEY FEATURES:
1. Junction between different materials, constructions or ages.
2. Cracking will be typically hairline.
3. Movement tends to be seasonal or diurnal.
4. The crack will not me progressive and will not get worse with time.
Cracks that accomplish this tesis:
CSB9
CCP19
CSB24
CSB35
CSB41
CSB40
Forces diagram:
These cracks are placed in the weak points of the partitions. They are the thinner points of junction between different materials, which respond to different systems, and therefore, move different. When these critical points are not properly reinforced, these cracks may appear. The cracks are not serious, not progressive and even in width.
