Framework of church vault raised fabrication on the right (8)
I believe the answer is:
espalier
'framework' is the definition.
(espalier is a kind of framework)
'church vault raised fabrication on the right' is the wordplay.
'church vault' becomes 'apse' (I can't explain this - if you can you should believe this answer much more).
'raised' shows that the letters should be reversed in order (going up in a down clue).
'fabrication' becomes 'lie' (a lie is an invention or fabrication).
'on' is a charade indicator (letters next to each other).
'the right' becomes 'r' (common abbreviation).
'apse' in reverse letter order is 'espa'.
'espa'+'lie'+'r'='ESPALIER'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for espalier that I've seen before include "Climbing trellis" , "Tree trained against a wall; pear lies (anag.)" , "train a plant" , "Wood used for lattice work" , "Trellis for training fruit trees" .)