Not sure if anyone else has seen this program.
A British TV series is being shown here about the various effects of WW11 bombs on houses etc.
They built two rows of houses and over the series detonated the equivalent of the various bombs nearby to show the effects. As the bombs got larger, the buildings gradually fell apart.
They also showed how the inccendary bombs worked, getting caught in the roof and setting fore to the beams etc.
All in all, I thought it was quite informative.