InfraTWIN
What a condition score means
By the CORRSENS team
Every member of a structure gets a number and a word. Here is what they tell an engineer, and how a ranked list turns into a repair plan.
A bridge is not one thing. It is a deck, girders, bearings, piers and caps, and each can be in a very different state. A single overall verdict hides that, so InfraTWIN scores every member separately.
A number and a word
Each member gets a score out of 10, and a status word beside it: Good, Watch, Poor or Critical. The word is there on purpose. A number alone is easy to misread, and colour alone excludes people who cannot tell red from green.
In our reports the bands are Good for 8 to 10, Watch for 6 to 8, Poor for 4 to 6 and Critical for 0 to 4. A pier scoring 3.8 would read as Critical, for example.
Where the score comes from
The score combines what the scan and photos show, such as cracks, spalling and exposed steel, with the results of tests taken on site and logged against the member they were taken on.
What you do with it
Sorted by score, the members become a ranked repair list. The Critical ones come first, then Poor, and the Watch members are monitored. That list, with quantities and costs, is the repair plan and bill of quantities.
A ranked list is easier to defend than an opinion.
Get field notes by email.
A short note when we publish. No spam, unsubscribe any time.