Traditional stoves in Bangladesh has large pot rest gaps, where heat and fire is lost, making the stoves less effective. The only reason for having such large gaps is for throwing in cow-dung balls, other loose biomass and sticks.

Many stoves are portable, seen here a women selling steamed food in a local shandy.

From Biochar_Goodstoves_Bangladesh_workshop_1

Floods are most common in many parts of Bangladesh, many houses are found standing over water, in such areas almost all the stoves are portable, made on baskets, old buckets, etc.