Lofty construction of piers (5)
I believe the answer is:
spire
'lofty construction' is the definition.
'spire' can be an answer for 'construction' (spire is a kind of construction). I am not certain of the 'lofty' bit.
'of piers' is the wordplay.
'of' indicates an anagram (the answer comes from or 'of' the letters).
'piers' is an anagram of 'SPIRE'.
Can you help me to learn more?
(Other definitions for spire that I've seen before include "Church steeple" , "feature of high church?" , "Tall pointed structure as on church or in O'Connell St." , "Tall cone-shaped structure on church" , "Feature of many churches" .)