Engineering insights · Sydney
Cracks can result from many causes, from normal material movement to settlement, structural movement or deterioration. The pattern, location, width and change over time all matter.
Practical guidance
A crack should not be diagnosed from a photograph alone when structural movement may be involved. An engineering inspection can help assess visible conditions, likely causes and whether monitoring, further investigation, repair or structural design is appropriate.
Record where cracks occur, when they were first noticed and whether they appear to be changing.
Photographs with scale and dates can help establish a useful history.
Related signs such as sticking doors, floor movement, water ingress or displaced finishes can provide context.
Available structural drawings, geotechnical information and previous reports can assist the assessment.
Some issues require further investigation beyond a visual inspection before a conclusion can be reached.
Common questions
Engineering review is appropriate where cracking is significant, changing, associated with movement or distortion, affects structural elements, or where the cause and implications are uncertain.
Width is only one factor. Location, direction, pattern, material, surrounding movement, building age and change over time also matter.
Depending on the findings, the engineer may recommend monitoring, further investigation, repair, structural design or no immediate structural work.
If the cause is uncertain, recording and assessing the condition before cosmetic repair can preserve useful evidence.
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