Put up beams, by the sound of it (5)
I believe the answer is:
raise
'put up' is the definition.
(I know that put up can be written as raise)
'beams by the sound of it' is the wordplay.
'beams' becomes 'rays' (rays of light).
'by the sound of it' shows a homophone (sound like).
'rays' sounds like 'RAISE'.
(Other definitions for raise that I've seen before include "Lift up, bring up" , "Hoist" , "Move higher" , "Care for during childhood" , "Lift; (to) levy (money)" .)