Flashcards in Chapter 1 Deck (24):
3 factors the fire service is losing that allow us to perform interior operations
Sufficient time for suppression
Time for a relevant building size up
3 primary factors that cause FF death and injury
It falls on you
You fall into it
3 Things that reduce FF safety in new construction
Lower material Mass
Engineered shapes for structural elements
What's the most important non emergency function we can do?
When does the foreground clock start?
When the first due apparatus sets the parking brake and we go to work
What does a working knowledge of building construction provide?
Ability to size up and
The foundation for a safe, effective and timely operation
Clark County, Nevada
Engineered wood- I joists
TIC showed nothing
Degradation was convected Heat
What can cause and I joist to fail?
What 2 things does the author think should be included in the size up?
The type of building construction
How long the building has been exposed to fire and heat
The passage of time is________and fire is _____
What is responsible for creating most loads?
The weight of the building itself and permanent attachments
Any load other than Dead load, transient in nature
Impacting or static
Applied to a small area
Spread over a large area
Impact load and example
Moving or sudden load, wind, large crowds , fire stream
Transient or intermittent, people on an escalator
Constant, rarely moves
What types of load are a fire team making a cut on a pitched roof while working from a roof ladder?
Live, Impact, and distributed
3 ways loads are imposed
Axial- through the center
Torsion- causes material to twist
Imposed loads, cause ________, and _________ cause ________
Stresses, stresses, forces
3 primary forces
Compression- flatten or crush
Tension- pull apart or stretch
Shear-causes material to tear or slide apart