Handbook for Bridge Inspections - TSP2
Handbook for Bridge Inspections - TSP2
Handbook for Bridge Inspections - TSP2
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5.6 Cause(s) of Damage<br />
The most common causes of damage have been gathered and systematised<br />
using the two digit codes detailed in the foll owing section.<br />
There can be several causes of damage.<br />
Figllre 5.6-1: Hairlinefraell/res &<br />
cmch causetl by Defecl No. 15<br />
Alkalille Reactil'e Materials<br />
Visual checks, suppl emented by measurements and materials testing,<br />
fo rm the basis of determining the cause of damage. However,<br />
a thorough knowledge of tile planning, construction and management<br />
of bridges is also important. The success ofa repair depends<br />
often on correctl y determin ing the primary cause of the damage<br />
when describ ing repairs.<br />
There is no requirement to provide the calise of damage after an<br />
infonnal inspection, but the cause of damage must be given after<br />
all other types of inspection whenever possible.<br />
"-igure 5.6-1: Corroded rein<strong>for</strong>cemenl<br />
due 10 Defect No. 31<br />
Incorrectl), Placetl reillf orcemenl &<br />
No. 34 bwif.jicient Finishing<br />
" ,<br />
Figllre 5.6-3: Hairlille Fractures &<br />
Cm cks dlle to Defect No. 61 Traffic<br />
Loads<br />
Figllre 5.6-4: Gap c(llI.\·el! by traffic<br />
impaci (No. 71)