053 - The number one skill to thrive as an FSE I've learnt in 1 year of podcasting

Fire Science Show

It has been one year since I started this show. I've promised you that we will learn Fire Safety Engineering together, and today comes a great time to reflect on some lessons learnt. In this episode, I will take you on a short journey through some most insightful moments in the show, that allowed me to identify the number one skill needed to thrive as a fire protection engineer.

What is that skill? Well press the play button and find it for yourself! The answer is 35 minutes away, and I promise this will not be a time wasted.

In this episode I have repurposed parts of other excellent interviews, each of them worth a listen (or a re-listen):



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The Fire Science Show is produced by the Fire Science Media in collaboration with OFR Consultants. Thank you to the podcast sponsor for their continuous support towards our mission.

2022-06-08 40 min Transcript

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Transcript

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Hello everybody.

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And welcome to the Fire Science Show.

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Episode 53.

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My name is Wojciech and for the last year.

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I've been interviewing or maybe even interrogating.

00:00:34.771 --> 00:00:42.392
Some leading fire safety experts from world of science engineering industry.

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And other fields that impact ours to ,learn what truly matters in delivering fire safety?

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To building, people, in the environment and our society.

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And I must say I've learned a lot, that it was the mission of the podcast to learn as much as possible.

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And share this learning process with you.

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So maybe you can enjoy it and learn a bit together with me.

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And I must say this year was an amazing effort.

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I've interviewed so many fantastic people and I've broadened my horizons so much.

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I would never expect it.

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So for today's episodes.

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I thought that it's time to summarize some learnings done.

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And try find, identify and tell you the number one thing that I have learned.

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And that thing is.

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Of course, I'm not going to tell you now.

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You have to listen to the episode, but it's worth it.

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Trust me.

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So in this episode, I'm going back to some, all of the best podcasts moments that will help me tell you this story.

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Of why this particular thing is, in my opinion, The number one.

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Learning from the podcast.

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I actually, maybe even number one skill, we need to have to create a fire safe world.

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To start the journey.

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Let's.

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Touch the subject of timber in fire.

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That has been the absolutely number one topic.

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In the podcast so far with the timber episodes with Danny Hopkin with, uh, Felix Wiesner with Daniel, Brandon.

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They all together, generated so much traffic in the podcast.

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Like nothing else.

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And there's a good reason for that.

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You know, timbers, exciting timbers, new timbers.

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Interesting.

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And everyone is talking about it and no one really has a great idea.

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How to do it holistically.

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Well, maybe we do, but it's not that we're listened.

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That's that's the kind of.

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Funny twist in here.

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And to start with timber and may be the problems that are generated in the world, the challenges that lie within, I would like to give the voice to Danny who has identified it fairly well, in my opinion.

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And as you will hear the issue lies not only within the knowledge of science, but actually in the environment we've created.

00:03:09.711 --> 00:03:15.471
So, yeah, he is Danny Hopkin from episode 18 on engineered timber and fire.

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So the first challenge I guess, is in understanding the remit of the common codes and standards that we apply in design.

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And I think a real challenge is the competency of the people designing buildings.

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So we have codes and standards that in their origin have come from non-combustible buildings that they were designed to deliver an adequate level of safety for concrete enclosures, for steel frames, for brick work, for other forms of masonry.

00:03:44.968 --> 00:03:55.598
And so a lot of concepts we have in building design things like fire resistance, as you mentioned are premised on the structure not becoming involved as a source of fuel.

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The very early mass timber buildings, particularly in the UK kind of assumed that those rules and guidance that apply for structures that don't burn can simply be extrapolated to structures where they're contributing as a source of fuel.

00:04:11.171 --> 00:04:15.651
And we know that's absolutely not true, and there's been some great papers have been written on it.

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You've got the "We need to talk about timber" a lecture by Angus Law and the corresponding paper in the structural engineer.

00:04:22.841 --> 00:04:27.322
So the first challenge has been in educating people and understanding.

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When they're applying a code or a standard, what they're getting and where the scope of that ultimately run runs its course and where timber fits into that discussion.

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and that's not been as easy or challenge to address as you might think.

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And I think that's for a couple of reasons.

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Structural or fire engineers to start with to my mind at least not actually that profficient at dealing with combustion problems.

00:04:53.428 --> 00:05:09.514
So a lot of fire engineering consultants at least kind of operate in this little bubble of I think Angus, Lou and Graham Spinardi, defined it as sort of code speak there, you develop an expertise  being able to read back what codes and standards are telling you to do.

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So there was almost like a memorizing and interpretation of a series of rules and regurgitating those bats and design teams Which doesn't help you design mass timber buildings.

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You have to understand the fire dynamics quite well.

00:05:22.954 --> 00:05:30.358
And you have to have definitely a good understanding of the combustion processes, so already, you may see where this is going.

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Fire science and fire engineering is inherently a complicated matter.

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The matter that is difficult to understand.

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Even by great scientists.

00:05:43.499 --> 00:05:45.718
, none of us understands the whole of it.

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And yet we are expected to give design.

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That is fire safe.

00:05:52.521 --> 00:06:00.922
We're expected to craft buildings that will not burn and will not take lives when they're burned and will not endanger the environment.

00:06:01.461 --> 00:06:02.242
And so on.

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So in order to fulfill this goal, to fulfill this role in our societies, we've build up this masterful set of codes and standards.

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Which at some point even overtook our ability to engineer, as Danny mentioned, code speak has developed.

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Where.

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You read the code and argue about what this clause of the code means and how to fulfill it.

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And people would find creative ways to go around it.

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People will do literally anything to go above the code to gain a.

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Competitive advantage over their competitors because that sometimes makes a breaks.

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The contracts awarded in the built industry.

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You know, I I've once heard someone told me it's a Chinese, uh, Saying.

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I'm not sure if that's the origin.

00:06:51.992 --> 00:06:53.942
But it goes like this.

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The law is like a fence.

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The tiger will jump over it.

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The.

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The snake will sneak under it, but at least the cattle does not spread.

00:07:03.992 --> 00:07:15.122
And in a way, we see that every day, tigers jumping above our codes and guidelines, trying to push for solutions, some sneaky ones, trying to go around them.

00:07:15.151 --> 00:07:16.262
Confusing everyone.

00:07:16.711 --> 00:07:21.721
And most of us engineers who do not really have a better choice than just follow this.

00:07:21.812 --> 00:07:23.341
These guidelines, but.

00:07:23.851 --> 00:07:28.711
Thus following the guidelines really provides safety as we expected.

00:07:29.252 --> 00:07:34.201
Is this sufficient to really build a fire safe building?

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Is it sufficient to design it?

00:07:36.302 --> 00:07:45.389
That's a really tough question because you're not having a wall of fire that you have to design and be done with it.

00:07:45.778 --> 00:07:49.005
your design affects everything in the building.

00:07:49.353 --> 00:07:59.507
And here, let me give voice to Ali Ashrafi my guest in episode 21, ali had a brilliant talk about resilient fire design with firefighters in mind.

00:07:59.987 --> 00:08:02.267
But this aspect of how do we build buildings?

00:08:02.267 --> 00:08:05.927
How do we design was always there in the background of his talk.

00:08:05.927 --> 00:08:10.788
And this is a fragment that really resonates with what I'm trying to.

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Convey in this episode.

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Design is never done in a vacuum.

00:08:17.928 --> 00:08:18.228
Right.

00:08:18.228 --> 00:08:26.778
So when we come to do the design, it is within a specific jurisdiction and there are codes and standards and there's a reason for that.

00:08:26.809 --> 00:08:39.649
When you look at the of how those codes and guidances are put together, you see all these stakeholders coming to the table and having the discussion, because that should happen.

00:08:39.989 --> 00:08:41.379
That's absolutely right.

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Each of these stakeholders has this perspective that's relevant  and valuable.

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And it's important to have those dialogues so that they are explicit about that.

00:08:53.438 --> 00:08:57.339
And for fire, just having the question is very important.

00:08:57.818 --> 00:09:06.099
What, one of the things I'm hoping to highlight as no one asks that question of what the objective is, right?

00:09:06.519 --> 00:09:11.589
You are doing certain things in the code and there's a presumption of the level of safety.

00:09:11.589 --> 00:09:12.938
And certainly there's a level of.

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Certainly for the more common buildings.

00:09:16.346 --> 00:09:17.397
That kind of resonates.

00:09:17.397 --> 00:09:17.697
Huh?

00:09:18.206 --> 00:09:26.937
And Ali went even further telling me about these expertise and the experience with the design.

00:09:27.206 --> 00:09:30.716
As you try to design more and more, move away from the code speak.

00:09:30.745 --> 00:09:34.796
You will meet more complex issues, big problems, big issues.

00:09:35.336 --> 00:09:37.416
So to put it in a better context.

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We were discussing the role of fire resistance as a methods to distinguish the properties of structural components of buildings, how, how it works, how it's made.

00:09:47.436 --> 00:09:57.666
What makes a fire test and what's the output of it, which is the fire resistance class in minutes, but does it truly convey safety?

00:09:58.246 --> 00:10:01.996
Does it lead to us meeting our objective, whatever our objectives are.

00:10:02.537 --> 00:10:06.677
Let's listen to Ali for once again, on  his take  on this topic.

00:10:06.738 --> 00:10:12.498
By training I'm a structural engineer and when I'm looking at fire, that's where my expertise lies.

00:10:12.498 --> 00:10:16.269
But one thing that is really key here.

00:10:17.450 --> 00:10:20.179
These are complex multifaceted issues.

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And so no matter where each of us is coming from what the discipline is, we should be designing in the context of overall safety goals.

00:10:29.720 --> 00:10:32.059
And so there should be dialogue between these designs.

00:10:32.059 --> 00:10:35.629
These are not individual pieces of design, they should talk to each other.

00:10:35.629 --> 00:10:39.019
And the way that most designs are today, that doesn't happen.

00:10:39.607 --> 00:10:50.577
Yeah, I want to add that when it comes to safety of destructure in fire, what we do right today, the common practice, which is a prescriptive practice.

00:10:50.638 --> 00:10:56.967
And you mentioned it's based on the fire resistance terminology is really not explicit.

00:10:56.967 --> 00:11:06.648
So in a fire resistance terminology, you take specific pieces of a building and you put them in a furnace for some duration and you say itpassed and thats great.

00:11:07.278 --> 00:11:14.128
But that actually doesn't tell you anything about how the building as a system is going to respond to the fire.

00:11:14.727 --> 00:11:27.427
And if I want to bring it back to the question of firefighters safety, I see really three things that are key and they should speak to each other.

00:11:27.878 --> 00:11:31.988
One of them is stability of the building.

00:11:32.798 --> 00:11:36.817
The building is the battlefield where you're fighting a fire.

00:11:37.658 --> 00:11:42.668
If someone's going in, they need to make sure that the building will not collapse in them.

00:11:42.707 --> 00:11:43.967
That is the baseline, right?

00:11:43.967 --> 00:11:46.788
So the structural stability is a really important piece.

00:11:47.418 --> 00:11:50.238
The second piece is evacuation, right?

00:11:50.238 --> 00:11:53.118
So we're doing all of this because we want to save lives.

00:11:53.890 --> 00:11:54.850
So here we go.

00:11:54.941 --> 00:11:56.441
We have some objectives.

00:11:56.471 --> 00:11:58.270
We want the firefighters to be safe.

00:11:58.541 --> 00:12:07.091
We won't, people just keep the building and there's many more structural stability, economic prosperity, business continuity, and other things that was rhymed with this.

00:12:07.331 --> 00:12:08.831
But yeah, , we have goals.

00:12:08.831 --> 00:12:10.841
We have objectives and we have codes.

00:12:10.870 --> 00:12:14.980
We have laws that tell us how to design.

00:12:15.130 --> 00:12:17.171
We run into.

00:12:17.591 --> 00:12:25.150
Problematic issues where our codes demand from us, something that other engineers would really not like to do.

00:12:25.750 --> 00:12:31.660
And I mean, it's already hard within your own ecosystem within your own country.

00:12:31.660 --> 00:12:32.410
Most likely.

00:12:32.831 --> 00:12:34.811
But once you start.

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Crossing borders.

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Once you start looking at fire safety as a sort of a global phenomenon or global need, maybe.

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You start to notice that this challenges.

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They are everywhere and everywhere they're different and it makes engineering.

00:12:54.304 --> 00:12:56.254
Really hard for those.

00:12:56.705 --> 00:12:59.825
Who try to pursue international careers.

00:13:00.424 --> 00:13:01.835
And novel problems.

00:13:02.315 --> 00:13:04.894
Open and over challenges or cure.

00:13:05.465 --> 00:13:07.304
You have to deal with things.

00:13:07.605 --> 00:13:12.914
You sometimes never deal within your own country or legislative framework.

00:13:13.067 --> 00:13:15.716
But then again, If you think about it, the fire is the same.

00:13:16.196 --> 00:13:20.696
There's no difference in fire in Poland versus the one in UK.

00:13:20.816 --> 00:13:25.586
Well, maybe there are, but not at the groundbreaking level.

00:13:25.885 --> 00:13:29.395
And that was something I've discussed with Benjamin Ralph.

00:13:29.725 --> 00:13:32.995
Um, the head of fire safety at Foster plus partners.

00:13:33.625 --> 00:13:40.166
In episode Ralph it was a great talk with someone who was educated as a fire engineered.

00:13:40.495 --> 00:13:44.785
Someone who has been a fire scientist for a good part of his life.

00:13:45.326 --> 00:13:52.265
And then ventured into huge architectural company to build a career in fire engineering worldwide.

00:13:52.716 --> 00:13:54.936
Bringing a very unique view to the field.

00:13:55.326 --> 00:14:01.686
So yeah, you need to listen to what Ben had to say about internationalization of fire problems.

00:14:02.552 --> 00:14:10.669
So it's interesting because people will often say I'm in meetings and workshops and sort of a little bit flippantly of wild fires everywhere all over the world.

00:14:11.210 --> 00:14:13.759
And you could go a step further than that.

00:14:13.759 --> 00:14:15.769
And you could say fire science is the same.

00:14:16.220 --> 00:14:20.360
Like you say, the, , you know, the universal constants the same, and he released right.

00:14:20.360 --> 00:14:22.070
Per unit areas give or take the same.

00:14:22.070 --> 00:14:22.309
Okay.

00:14:22.309 --> 00:14:24.590
Furnishings might be a little bit different or whatever it is.

00:14:25.190 --> 00:14:25.519
Yes.

00:14:25.519 --> 00:14:28.340
Fire science is the same, but I would say that.

00:14:29.105 --> 00:14:31.144
As soon as you start to talk about safety.

00:14:31.772 --> 00:14:35.851
And you start to talk about definitely design, but safety and risk.

00:14:35.851 --> 00:14:41.042
And you start to get into a world of acceptability and reasonability.

00:14:41.312 --> 00:14:48.572
And those things change, you know, acceptance of risk changes, internationally, and culture changes internationally.

00:14:48.991 --> 00:14:52.892
So I'd say that fire science is constant wherever you are, but fire safe.

00:14:53.572 --> 00:15:02.841
Does change combine with that very differing approaches with respect to the legal side of fire.

00:15:03.052 --> 00:15:09.135
So, you know, clients and countries all over the world have taken a whole bunch of different ways.

00:15:09.586 --> 00:15:25.534
Um, some extraordinarily prescriptive based, uh, tick the box, you know, implicit safety type, building design, and then some on the other side,  I mean, not necessarily explicit safety, but perform well, that's it?

00:15:25.565 --> 00:15:25.955
Yeah.

00:15:26.585 --> 00:15:26.855
Yeah.

00:15:27.065 --> 00:15:28.894
and sort of everywhere in between really.

00:15:29.303 --> 00:15:33.443
And to go deeper on this subject of international fire safety problems.

00:15:33.714 --> 00:15:39.817
It's not only the countries would have different codes and standards, but they even have different preferences.

00:15:40.057 --> 00:15:45.126
There are topics that are important in one part of the world, which would not be that important in another.

00:15:45.636 --> 00:15:46.897
There are things.

00:15:46.927 --> 00:15:53.576
Related to this fundamental expected level of safety that are completely different from country to country.

00:15:53.822 --> 00:16:00.932
There's one thing you realize very quickly as well, when you start to work, um, you know, dip your toe all over the world.

00:16:01.352 --> 00:16:04.082
There are things that some countries and by that.

00:16:04.927 --> 00:16:09.337
Broadly code's really some countries really care about.

00:16:09.337 --> 00:16:17.970
And, um, the level of implicit or explicit safety that's thrown at certain things is much, much higher, in comparison to other parts of the world.

00:16:17.970 --> 00:16:20.940
So a typical example might be here in the UK.

00:16:21.210 --> 00:16:25.350
We now have for the first time in a very long time prescription.

00:16:25.924 --> 00:16:29.105
At law level at legislation level to do with external walls.

00:16:29.434 --> 00:16:34.804
And of course that, you know, that's the lab that came about because of a, um, a terrible tragedy.

00:16:34.894 --> 00:16:38.195
And that's something that's very, very local, very, very specific.

00:16:38.284 --> 00:16:54.024
Whereas you look at other parts of the world, uh, And they really care about compartmentation in carparks for example, because there was a large fire where sadly, a whole bunch of people lost their life in a carpark fire.

00:16:54.024 --> 00:17:00.929
So the idea around design by disaster um, has it has a geographical variability, which is interesting.

00:17:01.200 --> 00:17:11.970
And then, I mean, really one of the key key challenges of my current role is we're an international organization designing, constructing, building all over the world.

00:17:12.480 --> 00:17:16.170
You know what, what's the best solution because there's international variation.

00:17:16.170 --> 00:17:19.660
And if, if there's something that's missed, for whatever reason, uh, local.

00:17:20.700 --> 00:17:26.009
We're in a position to see that we've got that international oversight to ask those questions about, hold on a minute.

00:17:26.430 --> 00:17:34.049
Why, why in this country, can we design a building made of X, Y, Z, you know, those sorts of pretty challenging questions?

00:17:34.049 --> 00:17:36.615
Actually, But that's that make sense?

00:17:37.125 --> 00:17:41.205
Do really have a different safety in different parts of the world.

00:17:41.506 --> 00:17:43.096
We really need our buildings.

00:17:43.576 --> 00:17:48.409
To be bale to different specification everywhere to provide fire safety.

00:17:48.439 --> 00:17:55.788
Well, it seems we do not really have a good measure of what fire safety is and how much of it we need.

00:17:56.388 --> 00:17:58.969
We don't really understand what.

00:17:59.659 --> 00:18:00.709
Influences that.

00:18:00.739 --> 00:18:02.239
And even if we do.

00:18:02.659 --> 00:18:08.929
It's very difficult to put this factors into a meaningful discussion with other stakeholders.

00:18:09.648 --> 00:18:24.709
So in the podcast, I was looking for the Fundations of safety and I've talked with many experts on the risk because that's a field which really tries to go deep on what safety and what's.

00:18:24.828 --> 00:18:25.278
Risk.

00:18:25.278 --> 00:18:27.618
And what hazards are for the building.

00:18:28.068 --> 00:18:33.078
And in one of these discussions, a really great one where in episode 23, I've hosted.

00:18:33.078 --> 00:18:39.048
Jaime Cadena Gomez and David Lange from university of Queensland,  we discussed Jaime's approach.

00:18:39.409 --> 00:18:45.048
To risk, which was by defining the maximum allowable damage and interesting concept itself.

00:18:45.409 --> 00:18:46.969
But in that conversation.

00:18:47.568 --> 00:18:48.409
We've touched.

00:18:48.919 --> 00:18:49.278
Uh, furry.

00:18:49.278 --> 00:18:50.028
Interesting.

00:18:50.628 --> 00:18:54.108
Part about the baseline level of safety.

00:18:54.199 --> 00:18:58.759
And let me ask David to tell you what he meant , about that.

00:18:59.042 --> 00:19:01.653
it's almost looking at the inherent risk in a building.

00:19:01.663 --> 00:19:05.853
So it's almost taking a concept from another, from other engineering disciplines to understand what is the inherent risk?

00:19:05.853 --> 00:19:17.982
What is the, when you strip out all of the controls, all of the fire safety features in the building, there are controls that help to reduce the risks they help to manage the, both the consequences and the likelihood of the occurrence of a significant scenario.

00:19:17.982 --> 00:19:20.282
A scenario that challenges the fire safety strategy in the building.

00:19:20.823 --> 00:19:24.873
If you strip all of those out, then what you're left with is the inherent risk that's inside of the building.

00:19:24.873 --> 00:19:26.042
Once everything else has failed.

00:19:26.096 --> 00:19:30.969
And that's, that's really the concept that Jaime's calculated tending towards, I think it's probably the best way to put it.

00:19:31.388 --> 00:19:35.798
Once you've calculated the inherent risk, then you can start to fit back into controls to optimize.

00:19:36.482 --> 00:19:41.853
So there we are a baseline level of safety of a building stripped out of everything.

00:19:42.153 --> 00:19:54.945
Like the most fundamental minimum out of safety, the building architecture and provides We can go only up from there to understand what the building really has to offer in terms of safety.

00:19:55.246 --> 00:19:57.736
But safety is not just a building, you know?

00:19:58.066 --> 00:20:03.855
I had this episode with Brian Meacham episode 20, and I could call it the mother of all.

00:20:04.395 --> 00:20:09.556
Podcast episodes, because it was probably the most meaningful conversation I've had in my life.

00:20:10.155 --> 00:20:13.965
And Brian has positioned fire safety as a social technical system.

00:20:14.566 --> 00:20:22.275
As a system that overlaps is the build environment, the social aspects of the society, the.

00:20:22.755 --> 00:20:24.434
Personal preferences of a person.

00:20:24.765 --> 00:20:26.984
The way, how we design the way, how we build.

00:20:27.494 --> 00:20:29.204
All the things altogether that.

00:20:29.234 --> 00:20:34.724
That leads to the creation of the building and the role that that building has in our society.

00:20:35.234 --> 00:20:36.704
And within that episode.

00:20:37.005 --> 00:20:40.575
Brian has put forward an interesting thought.

00:20:41.085 --> 00:20:43.904
That when we try to.

00:20:43.974 --> 00:20:46.615
Define the level of safety in the building.

00:20:47.095 --> 00:20:50.785
Well, there's quite an uncertain aspect into that.

00:20:50.785 --> 00:20:52.105
And that is humans.

00:20:52.825 --> 00:20:56.275
How we affect the safety of our building.

00:20:56.394 --> 00:21:07.255
Do we even modeled at the, we take it into account and that's quite fundamentally know, especially when you go back to the beginning of the episode and the discussion of timber.

00:21:07.494 --> 00:21:12.595
Where the role of firefighters, as you have heard in the episode with Daniel, Brandon is so fundamental.

00:21:13.035 --> 00:21:14.718
the human operations.

00:21:14.722 --> 00:21:19.789
R one of the most important contributors to safety in the building, but I cannot tell you that.

00:21:19.849 --> 00:21:40.720
Better than brian so let me pass the voice to him on what he meant about the human interference in the five scenarios People contribute to the severity of fires by the contents that they put in buildings, how they treat things such as, do they block open smoke or fire doors?

00:21:41.349 --> 00:21:59.285
And so you have this human component that adds a complexity to what the fire scenario and the fire significance is going to be in any given building, which increases the uncertainty in prediction because you have this huge variability in the population.

00:21:59.805 --> 00:22:06.795
and so people are an always have been kind of a focus of protection  in fire safety.

00:22:07.394 --> 00:22:12.575
And again,  the fire service plays a role in, in keeping the emphasis on people.

00:22:12.815 --> 00:22:18.515
And if you look to earthquake engineering or wind engineering, it's not that they ignore people, but they're.

00:22:19.005 --> 00:22:26.744
Very much in the paradigm of the probability of failure of the system or a significant part of the building.

00:22:26.744 --> 00:22:29.954
so the focus is the building and not the people.

00:22:29.954 --> 00:22:36.555
And what's the reliability of the structural system, given different load combinations.

00:22:36.605 --> 00:22:44.525
And so you never see a building regulation or a standard talk about, explicitly the life loss side of it.

00:22:44.765 --> 00:22:56.384
Whereas in fire, it's always talking about, what's the, how many people are going to die, what's the probability of, 10 or more people dying, which is by NFPA kind of a large event.

00:22:57.595 --> 00:22:58.555
So we have this.

00:22:59.035 --> 00:23:03.694
Important source of uncertainty in our design scenarios.

00:23:03.755 --> 00:23:05.494
Uh, which are people.

00:23:05.674 --> 00:23:09.994
We have people which are the target for the safety of the building.

00:23:10.234 --> 00:23:16.971
We have another group of people, firefighters who Core expected to enter the building and rescue it.

00:23:17.122 --> 00:23:19.071
So there was a lot of human operation.

00:23:19.582 --> 00:23:26.571
A lot of involvement on the design, fire and design scenario, but why it's it's important.

00:23:26.761 --> 00:23:39.092
And episode four, the aide I've invited Mike Spearpoint to talk about dangers and cap-ex and our discussion has eventually twisted towards the design scenarios and their importance in fire engineering.

00:23:39.541 --> 00:23:48.902
And this concept of the consistent level of crudeness has emerged, which in my opinion is very interesting when you think how engineering is done and how.

00:23:49.291 --> 00:23:51.122
Our analysis are performed.

00:23:51.511 --> 00:23:56.251
So Mike  Let's discuss the role of fire scenarios in our analysis.

00:23:56.990 --> 00:24:01.380
I love, how you positioned design fire as the most fundamental thing.

00:24:01.380 --> 00:24:06.630
And I agree with Vyto that it is the most important thing in the fire engineering.

00:24:06.630 --> 00:24:07.680
And if you think about.

00:24:08.494 --> 00:24:12.154
what would be the error in your engineering judgment?

00:24:12.184 --> 00:24:28.154
If you mistake the heat release rate, let's say you take two megawatts where you should have taken eight, w what's the impact of that on the outcome compared to like a choice of turbulence methods or choice of the mesh size in your CFD.

00:24:28.605 --> 00:24:38.265
And yet people spend so much time justifying this minuscule choices and they just go and the fire was like seven megawatts because we felt, because it was Wednesday.

00:24:39.130 --> 00:24:47.423
Yes, we could end up on a, different soap box about the, um, I mean, I mean, again, this is not something that I invented.

00:24:47.453 --> 00:24:48.894
It's a term that I've adopted.

00:24:48.894 --> 00:24:57.136
I got it from professor, from Andy Buchannan, but I think he got it from, uh, one of his colleagues, David Elms, this idea of consistent level of crudeness.

00:24:57.470 --> 00:25:06.440
so if there's no point going into a lot of detail in one parameter or one element, if another element is going, you're going to have to make a sort of broad judgment.

00:25:06.634 --> 00:25:07.713
it doesn't make sense.

00:25:07.974 --> 00:25:18.263
so yes, you, you want to get that consistent level of crudeness in any calculation, otherwise, yeah, something will have a very little difference, but you might spend a long time worrying about it.

00:25:18.564 --> 00:25:20.814
Uh, whereas something else you've just picked.

00:25:21.430 --> 00:25:25.426
from thin air, but that might have a really big impact on the outcome.

00:25:25.787 --> 00:25:37.906
And so these are sorts of questions that know myself and many others sort of wonder about now and again, try and do some simulations or calculations or try and demonstrate it.

00:25:38.325 --> 00:25:43.785
So you see the design fire will be probably the most influential aspect of your fire engineering analysis.

00:25:44.325 --> 00:25:47.625
So that's a very tough decision to make.

00:25:47.625 --> 00:25:49.335
And often we do it.

00:25:49.785 --> 00:25:53.684
Without really discussing that with other counterparts without really.

00:25:54.404 --> 00:26:00.015
Totally investigating the potential fire developments in our building.

00:26:00.280 --> 00:26:07.810
And here again, the risk aspects, the risk methods in fire can really shine because they give you this broader knowledge.

00:26:08.171 --> 00:26:10.000
I would like to come back to the episode.

00:26:10.067 --> 00:26:17.247
23 with Jaime Cadena Gomez where he shared with me, He stalls about building design fires.

00:26:17.696 --> 00:26:21.866
And treating design fire, not as an input, but as an output to your analysis.

00:26:22.258 --> 00:26:29.991
So if you really want to go down that path,  the requirements that you will have for the professionals involved are completely different.

00:26:30.442 --> 00:26:33.172
You're not only talking about modeling a fire.

00:26:33.172 --> 00:26:39.521
You're talking about constructing  a whole basis of knowledge, of both likelihood and consequences.

00:26:39.582 --> 00:26:49.682
And one key thing that I remember Jose telling me halfway through the PhD is you have to remember that fire scenarios are not an input.

00:26:50.068 --> 00:26:52.288
Fire scenarios are an output.

00:26:52.528 --> 00:26:58.949
You start with an idea of where you might have a fire and you start exploring what that could lead to.

00:26:59.308 --> 00:27:04.019
And you end up with the fire scenario, but you might have to do some calculations.

00:27:04.019 --> 00:27:08.888
And a lot of brain work to actually figure out  what the scenario is going to be.

00:27:09.398 --> 00:27:15.068
So that's a major difference between a fire say in a chemical.

00:27:15.909 --> 00:27:19.568
And a fire in a building, the scenarios are not evident.

00:27:19.628 --> 00:27:24.398
So you cannot just say, oh,design fires and check that step is covered.

00:27:24.538 --> 00:27:28.929
No, they actually required each iteration and checking those blind spots.

00:27:29.719 --> 00:27:30.769
So we're almost there.

00:27:31.038 --> 00:27:32.898
At the one most important skill.

00:27:33.288 --> 00:27:34.459
You have to have.

00:27:34.664 --> 00:27:35.565
Uh, no, it's not.

00:27:35.684 --> 00:27:50.133
Drafting the design fires If you think about it, this creation of the design fires, the creation of engineering design of the fire safety of the building, this holistic puzzle that we need to set to make the shoe, that the building is fire safe.

00:27:50.613 --> 00:27:52.923
It's kind of overwhelming, but.

00:27:53.107 --> 00:27:54.458
Lisa it really necessary.

00:27:54.458 --> 00:27:58.448
Maybe there are some shortcuts to make this better.

00:27:58.538 --> 00:28:00.817
Make this easier, make this quicker.

00:28:01.208 --> 00:28:02.887
Based on our knowledge intuition.

00:28:03.488 --> 00:28:04.928
Previous experiences.

00:28:05.346 --> 00:28:06.007
I really hate to say.

00:28:06.186 --> 00:28:06.846
But the code's instant.

00:28:07.416 --> 00:28:07.507
come.

00:28:07.507 --> 00:28:09.310
come to my Mind in here I think there's a.

00:28:09.378 --> 00:28:13.540
Plays for every tool we have and there will be buildings.

00:28:13.810 --> 00:28:23.780
Which will , require this amazing level of engineering master crafting the design scenarios and going through the full risk analysis to really understand.

00:28:24.111 --> 00:28:26.151
The basis of the risk in that building.

00:28:26.480 --> 00:28:27.621
But that's for sure.

00:28:27.621 --> 00:28:29.121
Not for all of the buildings.

00:28:29.353 --> 00:28:35.309
Well, Maybe we actually focused too much on this aspect of fire safety engineering.

00:28:35.759 --> 00:28:40.319
It was something that, again, Brian Mitcham has brought in the discussion.

00:28:40.859 --> 00:28:41.869
And it was a very.

00:28:41.869 --> 00:28:52.817
Powerful and eye opening if you look to the system safety literature, and some of the constructs that are used in other areas.

00:28:53.127 --> 00:29:21.502
Let's, take road safety just as an example, and in the countries and elsewhere, they have a vision zero objective to,  try to reduce the number of accidents that you know, would lead to a death due to traffic accident and so the aim is to put in designs within the system to control for, the type of accident or incident that could occur.

00:29:21.863 --> 00:29:27.262
That would be a an indicator or a predicator of that fatality.

00:29:27.262 --> 00:29:46.482
So the focus is on,  putting in safety systems, safety boundaries, minimizing the potential for the unacceptable event to occur rather than calculating or estimating all the scenarios that would necessarily lead to the unaccepted or unacceptable loss.

00:29:46.843 --> 00:30:06.073
So if we change that over  to fire, maybe we spend far too much time, trying to create scenarios that, address situations that yes, would result in a fire, but may not be the fire that we're going to see or as suitably representative enough.

00:30:06.583 --> 00:30:21.242
So what if we kind of take a step  backwards to the idea of the most, worst credible case, fire event or the maximum foreseeable loss scenario type that the insurance industry uses.

00:30:21.633 --> 00:30:31.803
And the design is focused on putting in safety barriers that are intended to keep the loss within the limits.

00:30:32.143 --> 00:30:50.343
Maybe we're modeling situations that, we're trying to understand, but we don't actually need to understand to end up with the level of safety or the implementation of safety measures that would increase the safety to a socially acceptable level.

00:30:51.153 --> 00:30:58.792
But that's a much different way of thinking then performance-based design is currently being practiced.

00:30:59.402 --> 00:31:00.271
So here we are.

00:31:00.876 --> 00:31:05.557
As a fire engineers, we deal with enormous complexity.

00:31:05.977 --> 00:31:07.356
Of physics.

00:31:07.356 --> 00:31:09.967
Uh, architecture systems.

00:31:10.477 --> 00:31:11.916
. Social constructs.

00:31:12.487 --> 00:31:16.207
And hire the aspects that influenced fire safety in our buildings.

00:31:16.537 --> 00:31:18.636
It's a hell of a puzzle to complete.

00:31:19.207 --> 00:31:23.190
And to be honest, we are capable of.

00:31:23.190 --> 00:31:24.559
Holistically viewing it.

00:31:24.559 --> 00:31:30.140
We're capable of masterfully crafting the design solutions for our buildings.

00:31:30.769 --> 00:31:34.000
After one year of dealing with this podcast.

00:31:34.227 --> 00:31:35.201
Of talking with.

00:31:35.217 --> 00:31:39.207
My fellow colleagues, experts in the field.

00:31:39.896 --> 00:31:40.527
I feel.

00:31:40.527 --> 00:31:41.876
The knowledge is here.

00:31:42.116 --> 00:31:43.467
The models are here.

00:31:43.826 --> 00:31:46.317
Every year, we better and better at.

00:31:46.400 --> 00:31:52.430
Understanding fire physics, fire dynamics, the consequences of fires, the ways, how to prevent fires.

00:31:52.880 --> 00:31:54.980
We have solutions for almost anything.

00:31:55.579 --> 00:31:55.849
Yet.

00:31:55.849 --> 00:31:57.589
It is so hard to implement them.

00:31:58.220 --> 00:31:59.809
And why is that?

00:31:59.900 --> 00:32:02.000
I think the one thing.

00:32:02.480 --> 00:32:05.930
That we need to really do more now immediately.

00:32:06.470 --> 00:32:08.750
Is to learn how to communicate efficiently.

00:32:09.650 --> 00:32:14.720
I think communication with our stakeholders with architects.

00:32:15.170 --> 00:32:18.200
With authorities with firefighters.

00:32:18.710 --> 00:32:20.750
With society even.

00:32:21.529 --> 00:32:22.880
This communication.

00:32:23.480 --> 00:32:29.089
Seems to be the number one missing element of moving fire safety forward.

00:32:29.690 --> 00:32:33.619
So many people in the podcast said, That we leave in silos.

00:32:33.650 --> 00:32:35.029
We're building the silos.

00:32:35.029 --> 00:32:37.880
We close fire safety engineering to other disciplines.

00:32:38.420 --> 00:32:40.190
So many have said.

00:32:40.579 --> 00:32:43.609
That people don't understand what we are doing.

00:32:43.609 --> 00:32:48.079
They don't understand how fire safety can be achieved in their buildings.

00:32:48.650 --> 00:32:54.710
They do not understand what we try to say to them, which means it's not that they're stupid.

00:32:54.980 --> 00:32:57.109
It's us who lack the communication skills.

00:32:57.650 --> 00:32:59.450
But keep in mind communication.

00:32:59.809 --> 00:33:01.250
Is a two way route.

00:33:01.940 --> 00:33:04.160
You don't communicate by evangelizing.

00:33:04.519 --> 00:33:10.880
The designers of your building were don't want to go on the crusade and push the knowledge on them.

00:33:11.329 --> 00:33:19.849
We need to communicate in a way that they understand why and what we are trying to achieve.

00:33:20.329 --> 00:33:23.509
And to understand, we also need to learn how to listen.

00:33:23.930 --> 00:33:25.039
We need to learn.

00:33:25.369 --> 00:33:31.549
How to understand their problems so we can give solutions for them, not solutions for us.

00:33:32.327 --> 00:33:33.760
And this needs for communicate.

00:33:33.790 --> 00:33:35.441
The reason why we need it.

00:33:35.980 --> 00:33:38.351
It's something that I've touched with Jimmy Johnson.

00:33:38.800 --> 00:33:41.931
The next president of SFP In episode 24.

00:33:42.381 --> 00:33:48.230
Uh, you also need to listen one then in which we've talked about, who is a fire safety engineer?

00:33:48.530 --> 00:33:51.681
So let's hear what Jimmy had to say about communicating.

00:33:51.999 --> 00:34:08.539
The key is his communication skills is what you said, because you're forced to communicate the same problem or the same solution to such a wide range of different people that someone has, as you said, no skill, no technical skill at all.

00:34:08.688 --> 00:34:12.032
They handling, uh, permitting a license , or a money issue.

00:34:12.032 --> 00:34:14.012
They buying the components, something.

00:34:14.815 --> 00:34:20.413
To the far far end to another engineer, maybe the, third party reviewer of the project, which is a fire engineer here.

00:34:20.802 --> 00:34:28.182
And then to the authorities that might know a lot, or might not know a lot that we'd have to approve this whole thing.

00:34:28.478 --> 00:34:32.298
So I think that's a, key skill that is necessary.

00:34:32.628 --> 00:34:33.858
You need to be able to communicate.

00:34:34.463 --> 00:34:37.913
Uh, really well to  convey the idea and the solutions.

00:34:37.932 --> 00:34:39.023
Everyone understands it.

00:34:39.983 --> 00:34:48.532
And I really liked one thing that you said there well, you don't need to have any license if you have a lot of money , to do whatever you want with that money.

00:34:48.532 --> 00:34:48.742
Yeah.

00:34:48.963 --> 00:34:51.682
If there's someone keen to invest, in this.

00:34:51.911 --> 00:34:56.224
And you're convinced them, for example, this is, acceptable and it will work.

00:34:56.557 --> 00:34:59.168
You better be sure that that will work then later on.

00:34:59.217 --> 00:35:23.577
A lot of pre-work is needed, especially with authorities before you actually start any project, make sure that it will be to some degree acceptable that you have a path that is planned, that you can actually convince them and that they are open to these ideas because that is all a performance based design about your you're not compliant with the rules, you're deviating from the rules.

00:35:23.911 --> 00:35:31.085
So unless that is conveyed in a straight manner and a serious in an open way, the project will not go forward.

00:35:31.085 --> 00:35:35.702
So I think communication is the number one skill as you said, And that's it.

00:35:35.822 --> 00:35:39.422
So in the world of complexity, in the world of.

00:35:39.753 --> 00:35:46.293
Really difficult, far design in the world where it is so hard to define how the fire will go in the building.

00:35:46.623 --> 00:35:47.672
What will happen?

00:35:48.063 --> 00:35:58.202
And why it is important in the world where country boarders  change the level of safety expected from the buildings in the world.

00:35:58.382 --> 00:36:00.063
We're going from country to country.

00:36:00.063 --> 00:36:02.072
You will meet the different codes.

00:36:02.342 --> 00:36:04.802
Different standards, different expectations.

00:36:05.043 --> 00:36:09.242
Different levels at which you have to discuss the fire safety.

00:36:09.813 --> 00:36:10.503
In the world.

00:36:10.833 --> 00:36:11.193
That.

00:36:11.422 --> 00:36:13.987
It may be so hard to provide the.

00:36:14.976 --> 00:36:18.336
Universal answer to what fire safety is.

00:36:19.327 --> 00:36:22.597
The number one thing is to communicate.

00:36:23.077 --> 00:36:23.827
To listen.

00:36:24.547 --> 00:36:25.177
The thing.

00:36:25.686 --> 00:36:29.467
And provide answers to truly respond to the problems we have.

00:36:29.947 --> 00:36:32.976
If we lack objectives, let's talk about objectives.

00:36:33.036 --> 00:36:34.416
Let's start a discussion.

00:36:34.746 --> 00:36:38.166
Let's find what's important in our low system.

00:36:38.197 --> 00:36:39.516
What do we want to protect?

00:36:39.516 --> 00:36:41.527
What do you want to expect from the buildings?

00:36:41.976 --> 00:36:43.356
We know how to achieve that.

00:36:43.657 --> 00:36:45.336
We know what can be achieved.

00:36:45.847 --> 00:36:47.947
Let's open the discussion and let's talk it over.

00:36:48.460 --> 00:36:56.793
If you're the world's most brilliant fire scientists, but you have never talked with people who in the end will be using the one thing that you are developing.

00:36:57.123 --> 00:36:58.204
I have a bad news for you.

00:36:58.204 --> 00:36:59.344
It will not be used.

00:36:59.344 --> 00:37:04.023
It will not be implemented because maybe you are not solving any issue for them.

00:37:04.324 --> 00:37:09.134
Maybe you are, maybe you're actually creating problems that they do not want.

00:37:09.463 --> 00:37:11.884
Maybe you create complexities.

00:37:12.503 --> 00:37:15.773
Applying that they're related to other technologies or other objectives.

00:37:15.773 --> 00:37:19.885
They need the world of fire engineering is just one piece of a building puzzle.

00:37:20.067 --> 00:37:24.266
There is so many objectives that need to be optimized for that.

00:37:24.476 --> 00:37:32.070
When a fire solution is simple to adapt and does not interfere with the rest of the building that that will be always chosen over a solution.

00:37:32.309 --> 00:37:34.860
That's great for fire, but complex for everyone else.

00:37:35.099 --> 00:37:39.960
You need to have this in your mind and to understand that you need to communicate.

00:37:40.847 --> 00:37:44.538
you want to design a building with different than.

00:37:44.614 --> 00:37:47.494
Code requirements to some fundamental features.

00:37:47.494 --> 00:37:50.014
I don't know, fire resistance or some safety systems in it.

00:37:50.403 --> 00:37:51.454
Let's discuss that.

00:37:51.963 --> 00:37:55.864
You need to be able to explain why are you doing.

00:37:56.384 --> 00:37:57.554
the choices you do.

00:37:57.914 --> 00:37:59.563
And what will they achieve?

00:37:59.684 --> 00:38:03.824
And that's your only chance to get this design approved.

00:38:04.273 --> 00:38:10.364
You want to design a really great fire scenario for a building, or you want to understand how the fire develops in your building?

00:38:10.364 --> 00:38:12.494
Well, you cannot really do it alone.

00:38:12.614 --> 00:38:15.224
You need to work with the architect, with the structural engineers.

00:38:15.643 --> 00:38:20.653
You need to understand the foundation of the building, the goals they want to achieve by building the building.

00:38:20.873 --> 00:38:27.873
to Truly understand which aspects of the building are important and which may be changed to improve the fire safety.

00:38:28.264 --> 00:38:38.313
Because if you don't do that, you'll end up in a never-ending battle with someone who really doesn't like your solution and will do anything to stop it.

00:38:38.614 --> 00:38:40.414
Eventually stopping fire safety in the building.

00:38:40.864 --> 00:38:46.353
So, yeah, my take from the podcast from talking with fire experts for over a year.

00:38:47.164 --> 00:38:50.193
This to listen more and communicate better.

00:38:50.974 --> 00:38:54.813
And I think that's the missing puzzle we have.

00:38:55.384 --> 00:38:57.063
It seems we have all the others.

00:38:57.391 --> 00:38:58.760
So that's it for them.

00:38:58.797 --> 00:39:00.311
One year episode.

00:39:00.311 --> 00:39:02.110
I wonder what the lessons will be.

00:39:02.561 --> 00:39:06.760
In the second year of podcast and will this view change over time?

00:39:07.121 --> 00:39:13.570
I'm really excited to see what the next year will bring and what is going to happen over here.

00:39:13.601 --> 00:39:14.501
One thing for sure.

00:39:14.501 --> 00:39:17.351
I'm definitely going to continue this project.

00:39:17.831 --> 00:39:22.351
And there is no expiry date on the Fire science shows.

00:39:22.860 --> 00:39:24.481
You can really expect.

00:39:24.960 --> 00:39:29.550
Episodes come your way every Wednesday to help you communicate better.

00:39:30.001 --> 00:39:33.900
To help understand issues of others better and help.

00:39:34.201 --> 00:39:34.771
Building.

00:39:34.918 --> 00:39:36.059
Uh, fire safe world.

00:39:36.358 --> 00:39:39.418
Thank you very much for listening to this episode.

00:39:39.547 --> 00:39:44.498
And all the previous episodes of the podcast, I really appreciate your presence.

00:39:44.557 --> 00:39:47.257
I appreciate your time spent with me in here.

00:39:47.648 --> 00:39:51.577
And I appreciate your support, all the kind messages, the reviews.

00:39:52.057 --> 00:39:55.358
It's also nice and, and makes this job.

00:39:55.777 --> 00:39:57.427
Very very worth it.

00:39:57.967 --> 00:39:58.568
Thank you.

00:39:58.688 --> 00:40:00.967
Dear listener of the Fire Science Show.

00:40:01.538 --> 00:40:02.527
And yeah.

00:40:02.557 --> 00:40:04.358
I see here next Wednesday.

00:40:04.748 --> 00:40:05.077
Bye.

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