Interpretation which requires some building up (12)
I believe the answer is:
construction
This clue might be a double definition.
'interpretation which requires some' is the first definition.
'construction' can be an answer for 'interpretation' (construction is a kind of interpretation). I am not certain of the rest of the definition.
'building up' is the second definition.
'construction' can be an answer for 'building' (I've seen this before). I am unsure of the 'up' bit.
Can you help me to learn more?
(Other definitions for construction that I've seen before include "Industry of erecting buildings" , "Building; interpretation" , "Process of erecting buildings" , "Act of building" .)