Here many idiots don't know abcd in fire crackers blabbering about collapse of buildings due to diwali crackers.
In my school days i mixed many bombs if they burned accidentally except char on walls (10-20kg) nothing happened to walls.
BUILDING/houses only collapses when one or two PILLARS were destroyed....... it is only possible by explosives which is Jihadis&Maoists are masters in it (filled in kerala).
How pillars are destroyed?? .... typical mallu and idiots answer.......... in a closed room fire crackers BOOM pillars collapsed.Pillars only collapse when iron rod inside pillar are melted(or entire pillar cut) with high intensity blast/heat is not possible by fire crackers.