more than 1.4m ..

according to the query of code for fire protection design of buildings (GB51116-2116), it is known that the minimum clear width of evacuation passage is not less than 1.4m, and the clear width and clear height of fire truck passage are not less than 4m, so it is known that the fire protection requirements of dining room balcony doors are more than 1.4m..

when designing a building, the doors and windows of the fire escape should be designed according to the standards, and they must meet the corresponding design standards.