Building Code Of The Day 11/17/2018

Per the 2015 UPC

What is the Minimum and Maximum trap weir allowed

(A) 3" and 6"
(B) 2" and 6"
(C) 2" and 4"
(D) 4" and 6"

Answer: (C)

                  
As you can see this exceeds the maximum trap weir... along with an unapproved material (Flex pipe)

1005.0 Trap Seals.
1005.1 General. Each fixture trap shall have a liquid seal of not less than 2 inches (51 mm) and not more than 4 inches (102 mm), except where a deeper seal is found necessary by the Authority Having Jurisdiction. Traps shall be set true with respect to their liquid seals and, where necessary, they shall be protected from freezing.