![]() It is rare for damage to progress beyond Category 2 when it does ground movement is usually the cause. It is concluded that for damage of Category 2 or less, cracking may result from aĬombination of causes which are difficult to identify and the cost and effort involved in carrying out an identification would beĭisproportionate to the scale of the damage, except for circumstances where the movement is likely to be progressive. The most common causes of damage are discussed. ![]() The assessment is based on aĭescription of work considered necessary to repair the building fabric classification into six categories is recommended, taking into account the nature, location and type of damage. This Digest discusses the assessment and classification of visible damage resulting from structural distortion. Building Research Establishment Digest 251 Revised 1995Īssessment of damage in low-rise buildings with particular reference to progressive foundation movement
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