PD Lightweight

Question 0

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

Answer 0

Open web LW wood truss

Question 1

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

Answer 1

No

Question 2

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.

Answer 2

500 sq ft

Question 3

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

Answer 3

Gusset plates or gang nails

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

Question 4

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

Answer 4

Collapse occurs in 1 hour

Question 5

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

Answer 5

5-10 minutes

Question 6

Is early collapse a issue in traditional PDS

Answer 6

No

Question 7

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

Answer 7

20 minutes

Question 8

What is the primary consideration at LWPD’S

Answer 8

Collapse

Question 9

At LWPDS what is of paramount importance?

Answer 9

Positioning the first Hoseline for early extinguishment

Question 10

How many foot span without columns would indicate LW construction

Answer 10

Spans greater than 25 ft

Question 11

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

Answer 11

Identify the presence of LW construction

Question 12

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

Answer 12

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

Question 13

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

Answer 13

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

Question 14

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?

Answer 14

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

Question 15

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

Answer 15

1st line goes to the cellar via easiest accses

Question 16

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?

Answer 16

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

Question 17

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?

Answer 17

Have to withdraw

Question 18

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?

Answer 18

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

Question 19

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

Answer 19

A 2 1/2 line

Question 20

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

Answer 20

A truss loft

Question 21

What does cold formed steel fail at?

Answer 21

800 degrees

Question 22

What does structural steel fail at?

Answer 22

1100 degrees

Question 23

How much strength does structural steel loose at 1100 degrees?

Answer 23

40 percent

Question 24

When does cast iron fail?

Answer 24

1100 degrees

Question 25

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

Answer 25

58 percent and not regained

Question 26

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

Answer 26

Heavy dead load

Question 27

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

Answer 27

The ceiling

Question 28

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

Answer 28

Exterior attack

Question 29

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

Answer 29

Double 5/8 plaster board

Question 30

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

Answer 30

A truss loft which= LW construction which= collapse

Question 31

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

Answer 31

A extra engine

Question 32

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

Answer 32

2 lines

Question 33

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

Answer 33

No never

Question 34

Can we operate on a LW pd roof?

Answer 34

Yes as long fire has not gotten into the cockloft

Question 35

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

Answer 35

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

Question 36

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

Answer 36

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

Question 37

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

Answer 37

Collier mansion

Question 38

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

Answer 38

Framing HVAC Plaster board Also suppose to conduct drills