An issue has been raised when replacing windows that the blockwork inner leaf is missing a lintel.
The hollow blocks have been in-filled with concrete which makes me believe that this is a ‘cast-it-yourself’ lintel where blocks have been hollowed out, rebar inserted and concrete cast.
Can anyone confirm whether this was a valid construction technique in the 1980s in the UK? If so can you provide more information such as the size and expected quantity of reinforcing bar?