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Taxpayers > PD Lightweight > Flashcards

PD Lightweight Flashcards

0
Q

What’s the most common type peaked roof found in LW construction ?

A

Open web LW wood truss

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1
Q

Are floors in LW construction as substantial as found in ordinary construction ?

A

No

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2
Q

Nyc bldg code requires LW constructed spaces between the ceiling and the floor above or the ceiling and roof above to be divided into approximately equal areas of_______ sq ft or less or has to have a sprinkler.

A

500 sq ft

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3
Q

What is the weakest point of a lightweight pararell chord wood truss?

A

Gusset plates or gang nails

Which only go into wood 1/4 to 1/2

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4
Q

In a traditional PD with a finished ceilings what’s the time of collapse?

A

Collapse occurs in 1 hour

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5
Q

When LW pd’s Structure are involved in fire how long into collapse can occur?

A

5-10 minutes

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6
Q

Is early collapse a issue in traditional PDS

A

No

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7
Q

How long in traditional pd’s with no ceiling can collapse occur?

A

20 minutes

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8
Q

What is the primary consideration at LWPD’S

A

Collapse

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9
Q

At LWPDS what is of paramount importance?

A

Positioning the first Hoseline for early extinguishment

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10
Q

How many foot span without columns would indicate LW construction

A

Spans greater than 25 ft

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11
Q

At LWPDS what is the most important factor to a safe and successful operation ?

A

Identify the presence of LW construction

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12
Q

What are some indications that you have a cellar fire in a PD?

A 
High heat no fire on first floor
Smoke from chimneys especially in warmer months
Smoke from first floor baseboards
Hot floor boards 
Smoke coming out of eves
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13
Q

When could we operate a line into a cellar window at a PD cellar fire?

A 
Serious advanced fire
Can't advance down the stairs
Unable to find the cellar entrance
Lightweight construction 
Emergency members trapped.              SCULE
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14
Q

If we are going to operate a line into a cellar window at a PD what do members operating on the first floor have to do?

A

Either have a line there to protect them on first floor or exit the bldg

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15
Q

At a cellar fire in a PD where does the first line get stretched to?

A

1st line goes to the cellar via easiest accses

16
Q

If the first line at a PD cellar fire goes into the main entrance who can order the line moved to a different entrance to access the cellar?

A

A ABC or chief can order this and there can’t be another hose line on scene

17
Q

If the first line at a pd cellar fire in going to be moved to a secondary entrance to the cellar what do members on the first floor have to do?

A

Have to withdraw

18
Q

If the first line in a pd cellar fire is going to be moved to go to a secondary entrance to the cellar what do members on the second floor have to do?

A

Have to have a secondary means of egress.( portable ladders)

19
Q

If you pull up and have a fully involved PD what should you stretch?

A

A 2 1/2 line

20
Q

If you had a LW wood parrell chord truss in a PD you should know this creates what?

A

A truss loft

21
Q

What does cold formed steel fail at?

A

800 degrees

22
Q

What does structural steel fail at?

A

1100 degrees

23
Q

How much strength does structural steel loose at 1100 degrees?

A

40 percent

24
Q

When does cast iron fail?

A

1100 degrees

25
Q

At 1100 degrees how much strength is lost with cast iron ?

A

58 percent and not regained

26
Q

If you had Q decking with concrete or gypsum on the floor boards what is this a sign of?

A

Heavy dead load

27
Q

When light weight construction is suspected where should you immediately inspect?

A

The ceiling

28
Q

What’s the primary attack on a LW PD under construction ?

A

Exterior attack

29
Q

When using the thermal imaging camera at a PD it will not be able to detect anything through?

A

Double 5/8 plaster board

30
Q

If you pull up to a fire in a Pd and have smoke pushing out the floor line what does this indicate to you?

A

A truss loft which= LW construction which= collapse

31
Q

If you have light weight construction at a PD fire what do you need to call for?

A

A extra engine

32
Q

If we can’t knock down a fire in a LW pd with _____ lines we should go to outside opps.

A

2 lines

33
Q

Can we cut flat or peaked roofs in a LW pd ?

A

No never

34
Q

Can we operate on a LW pd roof?

A

Yes as long fire has not gotten into the cockloft

35
Q

What can we do on the roof of a LW pd?

A

Vent top floor windows and skylights
Check sides and rear
Check HVAC system

36
Q

At a pd fire before going above the fire what must you know?

A

Position and progress of first and second line
Location and extent of fire
Known or Suspected life hazard

37
Q

What type of condition in a pd must be communicated to the IC ?

A

Collier mansion

38
Q

If a pd is being built with LW construction what phases are we suppose to inspect them?

A

Framing
HVAC
Plaster board
Also suppose to conduct drills

Taxpayers (79 decks)

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