How to make fire retardant hut....

1) Make solution of DAP (Diammonium Phosphate) and Water in proper proportion ( 1 kg DAP in 5 liter of water )

2) Put dry grass and other material use for making hut in prepared solution ,for 12 hours

3) Now remove material from solution and put it in sunlight until it become dry.

4) Now because of DAP special property ,your material (dry grass and other) become totally 

fire retardant,so make hut from such grass.this hut is totally fire retardant.