That is the usual procedure.
The temperature sensors measure surface temperature
of the assembly.
It does not state anywhere that I am fimiliar with,
That the sensors were placed under the insulating layer.
Can everyone see how Chainsaw feels the need to insert ludicrous statements in order to keep from revising the NIST theory?
I know you're not familiar with this test, because if you read the time/temp curves you would clearly see they are measuring at various places on the steel itself.
For anyone keeping score, he's claiming that the UL scientists responsible for measuring heat at the surface of the steel decided instead to measure the air temperature in the insulation layer around the steel. So, the 800C STEEL temperature (for about an hour) I keep referring to, Chainsaw is saying that's the temps of the air in the insulation. Which of course, is not true. But it serves a purpose:
That keeps him from digesting the fact that the steel did not fail even after almost an hour at 800C. Now we all know that they weren't referring to SFRM temperatures, but the structure of these conversations is such that "debunkers" get to claim any crazy ******** they want in order to keep from making any corrections to the official narrative.
But because Chainsaw knows that these tests disconfirm any kind of heat-induced collapse theory, so he's playing defense as best he can.
And 20 seconds on el Google produces this from NCSTAR 1-5B:
NCSTAR 1-5B said:
The surface temperature of bare steel trusses that were subject to impingement or proximity of flames from fires with a nominal 3 MW heat release rate reached 600 °C within 15 min. In comparison, the insulated steel trusses with SFRM protection (1.91 cm nominal thickness) reached 100 °C to 200 °C and the truss with 3.81 cm SFRM reached 50 °C to 100 °C after 15 min of exposure to a 3 MW heat release rate fire. After 50 min of exposure to a 3 MW nominal heat release rate, the trusses with SFRM protection (1.91 cm nominal thickness) reached 550 °C to 680 °C and the truss with 3.81 cm SFRM protection reached 415 °C....
For insulated components, the highest temperatures reached at steel surfaces were significantly lower than the temperature at the outside face of the insulation material, even at locations of fiame impingement.
So, either you are unable to read or unwilling. Or you are perpetuating a purposeful misunderstanding. Any way you cut it, you are flat wrong. Maybe they did measure the temperature of the SFRM, but the temperatures I'm talking about were STEEL temps: 800C for about an hour. Loaded to the maximum psf. No failure modes. No way around it.
Stop protecting a bunk theory. If you're a "debunker", this would be a good time to start doing some debunking of the bunk theory in your back pocket.