Hey everyone,

I believe I answered this CWI practice question correctly, but I'd like to confirm that my PROCESS of answering it was correct.

If a a welding procedure is being qualified for the following:
- welding ASTM 537 Class 2 plate welded to A517 Grade 100
- SMAW
- single-V-groove weld with steel backing
- 3/4" coupon
- 3G position

...If the required tests pass, what is maximum thickness qualified under this procedure?

a. 3/4"
b. 3"
c. 1.5"
d. No maximum
e. None

According to the 2016 CWI Book of Specifications, Table 7 – Thk Limitation of Plate/Pipe for Groove Welds for Proc. Qual.,
If the test weldment thickness is 3/4" to less 1-1/2," then
- the min. base metal T qualified is 3/16"
- the max. base metal T qualified is 2T

I believe I chose the right table, because the question references plate, groove weld, and procedure qualification.

So then, I used the equation '2T' to find the max, which is 2 x 3/4" = 1-1/2" (answer C).

Turns out that C is the correct answer, however, I'm hesitant to believe that the other info in the question (process, class, grade, position) were irrelevant.

Did I look at the right 'relevant' factors to solve this question???