Book 29

Question 1

4 Objectives of ventilation

Answer 1

1. Save lives
2. Assists FF Access
3. Control Horizontal spread
4. Reduces chance of flashover/backdraft

Question 2

2 types of vent holes

Answer 2

1. Heat holes
2. Strip

Question 3

Decking found on conventional and lightweight

Answer 3

Con - 1x4 or 1X6
LW- 3/8 inch or 1/2 inch plywood

Question 4

Single lightweight truss spans how many feet

Answer 4

70

Question 5

How many inches outside of purlin shall cure be to avoid metal hangers

Answer 5

4-6 inches

Question 6

Steep pitch rafter space

Answer 6

36 inches

Question 7

Gable roof rafter dimensions

Answer 7

2x6 or larger

16-24 inches on center

Question 8

Size of rafters on bridge truss roof

Answer 8

2x6 or larger

Question 9

How are lightweight gables built?

Answer 9

2x3 or 2x4 trusses held together by metal gusset plates

Question 10

Wooden truss members size on bridge truss?

Answer 10

2x12 inches

Question 11

Most common size of metal gusset plate connectors

Answer 11

18 gauge steel plates that penetrate 3/8 inches

Question 12

What is the size of sheathing

Answer 12

1x6 inches

Question 13

What is a jack rafter?

Answer 13

Rafter that crosses outside wall but does not reach ridge board

Question 14

What will be found on top of straight sheathing when modified for earthquake ordinance?

Answer 14

Plywood

Question 15

What size lumber comprises arch trusses and related members

Answer 15

2x12 inches or 2x14 inches

Question 16

Size of rafters on bow string arch

Answer 16

2x6 inches

Question 17

Where are nailing blocks found?

Answer 17

Perpendicular to top chaired and spaced 4’

Question 18

Characteristics of lamela arch

Answer 18

Egg crate

2x12 woof framing
1x6 sheathing

Question 19

What’s the difference between arch truss and tied arch truss

Answer 19

5/8 inch tie rods on tied arch truss

Question 20

Size of rafters on sawtooth

Answer 20

2x8 inches

Question 21

Revisions made to buildings made post 1933

Answer 21

Exterior walls 9 inches
Steel rebar in masonry walls
All joists and rafters anchored to exterior walls
Cement in mortar
Diagonal roof sheathing

Question 22

How long do metal gusset plate spans?

Answer 22

80’

Question 23

Open web span length?

Answer 23

70’

Question 24

Most common size of lam beam

Answer 24

6z36

Question 25

Common size for purlin

Answer 25

4x12

Question 26

How thick can lightweight concrete roof be

Answer 26

3-4 inches

Question 27

How high can parapet be on pre33?

Answer 27

3 feet above roof line or 5 feet when there’s a facade

Question 28

Main beams spaced

Answer 28

12 to 40 feet

Question 29

Steel starts to lose strength at what temp?

Answer 29

1000

Question 30

What’re open web bar joist characteristics?

Answer 30

1/8 inch steel for top and bottom chords 5/8 inch steel webbing

Question 31

Open web roof web members are

Answer 31

1-2 inch cold rolled steel

Question 32

Unreinforced masonry has what trademarks?

Answer 32

Rafter tie plates Bond beam caps Deep recessed windows Straight or arched lintels Lime mortar Kings row every 4-7 rows

Question 33

Safe areas of URM buildings

Answer 33

Corners Distance equal to building height

Question 34

Revisions to buildings post 1959

Answer 34

4-6 inch bond beam cap Parapet wall limited to 16 inches Rafter anchor rods every 4 feet or tie plates

Question 35

Positive pressure ventilation is _____ times more effective than negative

Answer 35

2

Question 36

Total structure collapse may occur when what percentage of roof is compromised

Answer 36

20

Question 37

Exhaust opening size

Answer 37

3/4 -1 3/4 of opening

Question 38

Positive pressure is effective against what winds

Answer 38

25mph

Question 39

Overhaul What ppm of CO is easily obtainable

Answer 39

500-1200ppm

Question 40

Concrete tilt ups up to

Answer 40

5 stories

Question 41

What concentration of CO can be fatal in less than 1 hour

Answer 41

4000

Question 42

What size home is a 18inch blower adequate for

Answer 42

2000 sq feet

Question 43

If unequal CFM or size blower are used in series place larger blower how many feet behind smaller

Answer 43

2

Question 44

Removing screens increases effectiveness by

Answer 44

50 percent

Question 45

If blower is in series increases capacity by what

Answer 45

10 percent

Question 46

Two types of elevators

Answer 46

Cable and hydraulic

Question 47

What two types of cable elevators are there

Answer 47

Drum and traction

Question 48

Drum type elevators are restricted to what

Answer 48

150 feet

Question 49

Equipment rooms for hydraulic elevators can be found where

Answer 49

Any floor level or 50-100 feet from shaft

Question 50

Size and Capacity for freight elevator

Answer 50

12x14 feet 3 tons (6000 lbs)

Question 51

4 basic types of elevator doors

Answer 51

Swing hall Single slide Center opening Two speed

Question 52

What size are fob blocks

Answer 52

3 inches wide 1 inch high 1/2 inch thick

Question 53

Gib blocks are installed every

Answer 53

18 inches

Question 54

What do gib blocks do

Answer 54

Provide stability to hoist away doors

Question 55

How many gib blocks are normally used

Answer 55

2

Question 56

When is an elevator over speeding

Answer 56

More than 20 percent of top speed

Question 57

When recycling elevator power leave off for how long

Answer 57

30 seconds

Question 58

On hydraulic elevators and some cable elevators hoist away doors will open when elevator is within how many inches above or below floor level

Answer 58

6

Question 59

On cable elevators hoistaway doors will open when elevator is within how many inches of floor level

Answer 59

18

Question 60

Where do you insert airbag when opening elevator door

Answer 60

Near top

Question 61

An escalator traveling between 90-120 feet per minute can carry how many passengers per hour

Answer 61

5000 passengers

Question 62

The pick up arm clutch on the hoist away door is generally how long on hydraulic elevators? Cable?

Answer 62

14 inches 36 inches

Question 63

Where does LA get its water

Answer 63

75 percent from aqueducts in Sierra nevadas 15 percent wells in valley 10 metropolitan water district

Question 64

How big can trunk lines be in water distribution system?

Answer 64

36 inches to 10

Question 65

Where are mains found and what sizes?

Answer 65

2-72 inches

Question 66

Customer service lines for water

Answer 66

1/2 inch to 12 inches

Question 67

What types of water shutoff valves?

Answer 67

Non indicating and indicating