opaque portion of a door -temperature rise

[sunyaer]

When addressing temperature rise for fire doors, the temperature rise limit applies to the "opaque portion" of the door. My questions:

1. Is a fire door in a fire wall allowed to have glazing?
2. Is there a temperature rise restriction on the glazing portion of a fire door in a fire wall?

 

[sunyaer]

3. Which part of a fire door does “opaque portion” refer to?

 

[tmurray]

1. There is nothing in code that prevents glazing in fire wall fire doors.
2. Temperature rise applies only to the opaque portion of the door, not to glazing.
3. Opaque is the portion of the door you can't see through.

 

[sunyaer]

1. There is nothing in code that prevents glazing in fire wall fire doors.
2. Temperature rise applies only to the opaque portion of the door, not to glazing.
3. Opaque is the portion of the door you can't see through.

How does a lab test the temperature rise only on the opaque portion of a fire door? Are sensors placed on that portion to monitor the temperature rise ?

 

[tmurray]

How does a lab test the temperature rise only on the opaque portion of a fire door? Are sensors placed on that portion to monitor the temperature rise ?

IN the testing environment there is no glazing in the door. Yes, thermocouples are attached to the non-fire side of the door to track the temperature.

 

[sunyaer]

IN the testing environment there is no glazing in the door. Yes, thermocouples are attached to the non-fire side of the door to track the temperature.

It look like the fire door has glazing in the fire test:

 

[tmurray]

It look like the fire door has glazing in the fire test:
View attachment 11160

I would assume that the test might be just for time rating, not temperature rating. Also, I'm not sure that is a Canadian test. It could be a US or UK one.

Every door has to undergo multiple test iterations as each window size and configuration needs its own test. You can probably guess that temperature rise on the non-fire exposed side differs greatly based on the window size. In Canada, field modification of fire doors voids the rating. The US in contrast allows some modifications.