Solid Ground floors with air bricks?

[wonderwizard]

Hello,

I recently bought a 1950's semidetached ex council house, it has solid floors throughout downstairs and air bricks outside, front / back and side.

My question is that I am confused about it having air bricks AND a solid concrete floor. I thought air bricks were not for cavity walls and instead for subfloor ventilation?

Perhaps it is not a direct to earth concrete floor and some kind of suspended slab?

Anyway if you can help my understanding that would be much appreciated.

Cheers,

Chris

 

[Jackrae]

Poke rigid wire into airbrick hole. If it goes in 6" or so and stops then it vents the cavity. If it goes greater than 10" then it vents the underfloor space - which for a concrete floor must presumably be suspended (but unlikely)

 

[wonderwizard]

Cheers, Jackrae. Cavity vents.