Handbook for Bridge Inspections - TSP2
Handbook for Bridge Inspections - TSP2
Handbook for Bridge Inspections - TSP2
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Procedures<br />
In most cases it is sufficient <strong>for</strong> the width of the area to be cut to<br />
match the dimensions of the re in<strong>for</strong>cement and the cover sllch that<br />
the minimum width equals the cover plus the diameter of the rein<strong>for</strong>cement<br />
(0 + d). Refer to Figure 7.3- 12. Approximately 1/3 to Y2<br />
of the rein<strong>for</strong>cement element's circumference s hou~d be bared <strong>for</strong><br />
atleasl 0.3 cm.<br />
.r<br />
minimum<br />
O+d<br />
.r<br />
.-<br />
:T-<br />
O<br />
:Ty<br />
d r<br />
Figllre 7.3-/2: Recommended Breadll! & Deplh oflhe CIIII/llc ision<br />
The degree of rusting in the rein<strong>for</strong>cement wi ll be assessed usi ng<br />
the fo llowing scale:<br />
Level A: No damage. Dull grey coating on the rein <strong>for</strong>cement ele<br />
ment.<br />
Level B: The first small traces ofrus! can be seen. Assess whether<br />
these date from the bridge's construction period.<br />
Level C: Even distribution of surface rust.<br />
Level D: Severely peeling surface rust as we ll as clear cross-secti<br />
onal reduction in size.<br />
Level E: Corrosive pi tting.<br />
The degrees of rust ing are illustrated in Figures 7.3-13 to 7.3-17.<br />
Figllre 7.3-/3: Example ofRusl Level A
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