Cracks in buildings

What are cracks?

Crack: a line on the surface of something along which it has split without breaking into separate parts. Crack is also a narrow space between two surfaces, especially ones that have broken or been moved apart.

                                   

Type of cracks

 There are two types of cracks: 

Ø Structural crack: It arises due to incorrect designs, overloading and poor workmanship.

Ø Non-structural crack: It arises due to internal forces developed in materials by moisture variations, temperature variation, effects of gases and liquids.

 Cracks width

ü  Less than 15mm  (has no effect on structural integrity)

ü  From 15-25mm    (severe)

ü  Over 25mm          (very severe = start to become remotely dangerous) 

Common curing methods

        i.            Mortar/polymer injection

      ii.            Stitching

    iii.            Addition reinforcement

Conclusion

For the finally, cracks are always the common issues in building construction. In order to build a long-decade-building, structural engineer and constructor must be taken care of and conform by code of construction.

Source: Presentations of cracks

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