What should gap be under pivot hinge fire door.

[Guest Dave]

Hi, we have a riser cupboard fire door with smoke seals in our office which is on pivot hinges. Can you tell me what the gap should be under the door? . It seems there is bigger gap where the hinge is. Do you get more tolerance with pivot door hinges?

[Neil ashdown]

In terms of the threshold gap for fire doors and compliance to BS 8214: 2016, there is no distinction between doors with top & bottom pivots and doors with butt hinges.