Fire inspector part 4 Flashcards
If a fire hazard has been reported, before inspection you must notify the building occupant?
The nature of the hazard
All portable tanks greater than ____ should be treated according to the same standards as fixed tanks?
60 gallons
Fire extinguishers less than 40lbs should be mounted no higher than _____ feet from the floor
5
An angle cut on a wooden joist to lessen the possibility of wall collapse in case
Fire cut
What type of detector operates on two types of metal that have different heat expansion ratios?
Bimetallic
What should not be operated below 400degrees F
Drop out panel
What is fire resistance?
The ability of a structural assembly to maintain its load-bearing ability under fire conditions
A horizontal structure member used between posts, columns, or walls?
Beam
What is the activation temperature of on orange head sprinkler?
500-575F
Classified as ultra-high
The thickness of wood used for fire stopping is what?
no less than 2 inches
What are the hazards of dip tank operations?
Fire involving the liquids and explosions involving vapor and air mixtures
What is the hour rating of the roof in a dry cleaning facility?
Not less than one-hour
What is the discharge size of the inspectors test connection?
The discharge orifice shall be equal in size to the smallest sprinkler in the system
What is the rating for doors in a smoke proof enclosure?
20 minutes
The maximum amount of heat that can be produced if all the combustible materials in a given area burn
Fire load
Rate of rise detectors depends on what?
- Expansion characteristic of heat
- will activate if temperatures rises 12-15 degrees per minute
What type of door is required for flammable storage room?
self-closing
What is a birds mouth cut?
- A cut in the rafter to make it fit flush on the top plate
- consists of the plumb cut and the seat cut
What is a floor plan?
a sectional view taken on a horizontal plane 42” to 48” above the floor
What is an exploded pictorial drawing?
- Used to show the relative position of parts or construction detail
- used to clarify assembly
What type of material is halon ineffective on?
self-oxidizing
What drawing is the most realistic view?
The pictorial drawing
Which landings have standpipe connections in scissors stairs?
Alternating floors
If a straight line is not running horizontal or vertical, which way is it running?
An inclined line
What is the minimum clearance from combustible materials for cooking equipment?
18 inches
In regards to the ordinary household lamp, what are the percentages of light and heat?
10% energy is light
90% energy is heat
What are the two common types of extinguishing agents in hood systems?
Potassium Carbonate
Potassium Acetate
What is the minimum distance between above ground flammable or combustible storage tanks?
3 feet
What is the minimum rating of a door into an exit access corridor?
20 minutes
What is a gusset plate?
a piece of metal or plywood used to reinforce a joint of a truss
Most electrical fires are caused how?
Arcs
overheating
What are the four basic components of a dry chemical extinguishing system?
Storage Tank
Piping
Nozzles
Actuating Mechanism
How many people should be on of a board of appeals?
5-7
Balconies and Mezzanines with a load greater than 100 must have how many means of egress?
Not less than two
To water flow test a sprinkler system, what is used?
Inspectors test valve
Residential sprinkler systems require what size piping and what supply requirements?
Minimum of 3/4 inch piping
May use domestic water supply with a single household shut-off preventing closing the water to the system without shutting household supply also
NFPA 30 covers what?
Combustible and flammable liquids codes
What is the minimum distance needed between LPG and other flammable liquid storage tanks?
20 feet
What defines educational occupancies?
- Used for educational purpose
- K through 12th grade
- By 6 or more persons
- For more than 4 hours a day or 12 hours per week
A continuous and unobstructed way of travel from any point in a building or structure to a public way consisting of 3 separate and distinct parts
Means of Egress
What are the 3 parts of Means of Egress?
The Exit Access
The Exit
The Exit Discharge
Do fire escape stairs count as a means of egress?
No
What fire rating must exposed supports for above ground tanks have?
2 hours or more
The temperature at which the vapor pressure of the liquid is equal to the external pressure applied to it?
Boiling Point
What type of ID is required for bulk haz-mat storage?
a 4 digit ID number
What are the steps for performing the main drain test?
Observe
Open
Observe
Close
What is used to test a wet pipe system to prevent unseating the alarm valve?
It is tested with the alarm bypass valve
What is the covering over studs called?
Sheathing
Any loads to a building other than a live load
live load
When the end of a joist is cut off at an angle to permit the joist to fall out of the masonry wall without damaging the wall
Fire cut
What are two methods of pre-stressing concrete?
Pre-Tensioning (done at the plant)
Post-Tensioning (done at the job site)
Made by sandwiching a piece of steel between two wooden beams
Flitch plate girder
What does veneer do?
It improves the appearance of the building &
It is non-load bearing
In an isometric drawing, what angles are the horizontal planes drawn above the horizon?
30 degrees
What increments do modular drawings use?
4
Support for a masonry opening, usually steel or special form, such as pre-cast concrete
Lintel
A list of details or sizes for building components such as doors, windows, or beams (done by the architect)
Schedule
What are hidden lines?
Medium weight and composed of short dashed
The define edges and surfaces that are not visible in a particular view
What is a sectional line?
- Used in a sectional view to show that the material has been “cut” by the cutting plane
- Also called cross-hatch lines
Is exit access permitted through dining rooms and sitting rooms
Yes.
NOT through kitchens or storage rooms
Where is the anunciator panel located in a building?
In an approved area by the AHJ
What is the minimum height something may project from the ceiling?
6’ 8” from the floor
What is the purpose of the Life Safety Code?
to provide MINIMUM requirements for life and safety from fire and similar emergencies
If sprinkler heads are omitted from a closet, it may not be over what size?
24 sq feet
Is a painting plan a common type of plan?
NO
The length of a line running between two points on the circle passing through the center?
Diameter
Two or more conductors carrying electricity from the source to the electrical device and returning
Circuit
A rafter that extends from an outside corner of a building to the ridge board, usually at 45 degrees to the ridge
Hip rafter
Extends from the top plate of a building to the hip rafter
Hip jack
The horizontal member at the peak of the roof
- upper ends of the rafter are connected to it
ridge
What is the internal forces in a building which resist the load?
Stress and strain
A known elevation of a plot plan
Benchmark
A drawing showing the location of a building on its plot of land and various details of the land
- Also called a site plan
Plot Plan
What is another name of the solution composed of potassium carbonate?
A wet chemical extinguishing agent
Sometimes used for floors in mobile homes
- wood chips glued together to make flat sheets
chipboard
Bricks laid so the long side is visible
Wythe
A wood joist spanning wall to wall
Simple beam
At what temperature does steel begin to fail?
above 1000 degrees F
- Suited for delicate electrical equipment
- Not suited for deep seated Class A fires
- The system should be tested semi-annually
Halon extinguishing systems
What is the operating PSI of a pressurized water extinguisher?
100 PSI
When should fire pumps be tested?
weekly (should be done by the in-plant managers)
Opens when the system flows water allowing water from the supply side and also opens the piping to the retard chamber?
Clapper valve
What is used to test a wet system?
- Opening the main drain valve allowing the alarm to activate
- Take measurements of the water system:
- before testing
- during the test
- after the test
- compare the readings
When is pre-action system used?
When it is especially important that the water damage be prevented, even if the sprinkler pipes break accidentally
A heat detector that uses two types of metal that have different heat-expansion ratios?
Bimetallic detector
Hydrostatic testing of extinguishers?
Should be done every 5 years for most extinguishers
- Dry chemical one less than 150lbs made with a steel shell should be tested every 12 years
NFPA Placards:
Blue is for:
Health hazards
NPFA Placards:
A “P” on it indicates:
there is a potential for the material to undergo auto-polymerization
NFPA Placards:
The numbers 0-4 rates the hazard with ____ being the highest hazard
4
Typically the slowest type of system. Very reliable due to sensitivity
Heat detector
Who tests dry chemical extinguisher system?
reputable contractor
Wet system testing
Should be done monthly
- performed by the in-plant inspector
The generation of Carbon Monoxide in concealed spaces can be how much greater than in the open?
50 times greater
How tall is the typical Platform-frame construction building
3 stories
When heated to 1000 degrees F, steel will expand how much per 100 feet?
9 1/2 inches
What temperature is an ordinary sprinkler head rated at?
165 degrees F
is the chief characteristic of ordinary construction?
The exterior walls are made of masonry
What is the practical limit distance for a simple wood beam floor?
25 feet
What is the outer weather surface placed over sheathing called
Siding
What type of construction with exterior weight bearing walls has a 1 hour fire resistance rating?
Ordinary construction
In a butterfly valve, thee gate rotates _____ degrees IN the water way
90
It operates with a 1/4 turn and will have pointer arrow that shows the position of the valve
Butterfly valve
How are sprinkler valves kept in the open position?
- By a locked chain
- By another locking mechanism
- By an electronic detection device
It pre-fills with water during surges prior to allowing water to the electronic alarm thus preventing false alarms
Retard chamber
Air is removed rapidly from a dry pipe system by:
- An accelerator
- An exhauster
What are the requirements for spare heads?
1-300 heads require 6 spares
301-1000 heads require 12 spares
1001 or more require 24 spares
What is the color of the frangible bulb of an ordinary sprinkler head?
Orange or Red
What are the water supplies for systems?
- municipal water
- gravity tank
- reservoir tank with a pump
- pressure tank
What is the pressure at the highest sprinkler head in the system?
15 PSI, with 7 PSI residual
Standpipe systems are needed in buildings where:
- it is greater than 75’ to the highest occupied floor
- Large one-story buildings
Standpipes must be located in:
non-combustible, fire rated stairwells
Basic PSI elevation figure is:
.434 lbs of pressure required to raise water one foot
Basic PSI elevation rule for FD is \_\_\_ psi per floor (The class B rating test)
5
Every 1sq ft of fuel corresponds to every _______ rating
1-B
Pressurized water extinguishers must have a minimum effective discharge range of ___’ for a ____ second period
30’ for a 40 second
Dry chemical and dry powder must have minimum horizontal range of ____ ‘
10’
Common Dry Chemical Agents are:
Sodium Bicarbonate
Potassium Bicarbonate
Monoammonium Phosphate
Internal pressure of extinguishers:
Vary from 100psi to 850 psi
Fire apparatus extinguisher needs:
TWO rated for Class B:C fires
- One dry chemical; must have a rating of 80-B:C
- One CO2; must have a rating of at least 10B:C
ONE rated for Class A fires
- One 2 1/2 gallon or larger water extinguisher
The three types of fire pump drivers are:
Electric motor
Diesel motor
Steam motor
A pump that intakes from a low-pressure municipal main and boosts the pressure to levels required for the fire suppression system
A booster pump
What is difference between interior and exterior plywood?
The type of adhesive used
In what ways is steel strength used?
Both in tension and compression
Regarding solid piling storage, it presents fewer paths for fire development because of:
- it contains no horizontal voids
- it simply stacks merchandise cartons or cases directly on top of each other
What does PIV and WPIV stand for?
Post Indicator Valve
Wall Post Indicator Valve
- creeping or sliding apart of the fusible link of a sprinkler head
- It is caused by the repeated heating of a sprinkler head to near its operating temperature
Cold Flow
Strong air flow patterns in vertical shafts of high-rise structures
Stack effect
How often should a halon extinguishing system be tested?
Semi-annually
What type of Class A fire is halon not very effective on?
A deep seated class A fire
How often are fire pumps for standpipes tested?
Weekly
Mounting requirements for fire alarm pull boxes are?
- The bottom is less than 3 1/2’ from the floor and no more than 5’
- travel distance may not exceed 200’
- In multi-story buildings there should be at least one per floor
How often should extinguishers of 150 lbs or less by hydrostatically tested?
Once every 12 years
Is a partition wall load bearing?
No
In a lodging or rooming house where a sleeping room is above the level of exit discharge, the primary means of escape should be what?
- enclosed stairway
- horizontal exit
- exterior stair
- fire escape
orthographic projections are what?
three dimensional
What type of sprinkler system will not cause damage if a pipe breaks?
Pre-action system
What are the three classes of standpipe systems?
Class I: For use only by fire personnel only
Class II: For use by occupants only
Class III: For use by both fire personnel and occupants
How many square feet may a sprinkler cover in a low hazard?
225 sq ft
What type of mortar is for underground masonry?
Type M
On what plans are the HVAC systems usually shown on?
Mechanical plan
In metric conversion, what does one inch equal?
25.4mm or 2.54
What are dimension lines?
- They extend for the length of the distance being measured
- Extension lines are drawn perpendicular to the extension lines
A minute is _____ of a degree
1/60th
similar to Oblique drawings
True shape and size are shown in the front view
Parallel perspective drawings
What type of doors do freight elevators have?
Counter balanced doors
What is the date used for using the in effect code when building a new occupancy?
The date of the plan approval
The proper order to inspect a building is:
- from top to bottom
- from bottom to top
- follow a specific plant process from beginning to end
With all other conditions being equal, a structure will sustain its greatest load when the load is :
Axial
What is the name of a beam with the shape of a “C” of a “U”?
Channel Beam
What is the thickness of a trap door for a stage?
1 1/2”
Mezzanines can take up no more then ____ of the total room
1/3 of the room
What distance can a rigid beam span?
100’
How often are sprinkler systems tested?
Quarterly
What is the proportion of liquid to air in a pressurized tank at 75 psi?
2/3 liquid to 1/3 air
How long will rough cut timber last in fire?
5 minutes per inch
What is another term for pictorial drawings?
Renderings
What are three activating devices on a sprinkler head?
Fusible link (most common)
Glass bulb
Chemical pellet
When a sprinkler is supplied by a water tank, what is the required height?
35 feet above the highest sprinkler head
The pressure of the tank must be at least 75psi when the tank is 2/3 full
What temperature does aluminum melt at?
1200 degrees F
At what temperature do cold drawn steel cables fail?
800 degrees F
The tapered extensions at the top of columns which transfers loads from the floor to the column
mushroom cap
What are the two common types of smoke detectors?
Ionization
Photo-electric
What is the flammability percentage range for carbon monoxide?
- 5% to 74%
- ignition temperature of 1128 degrees F
What are the five basic principles of inspecting?
- interaction with people
- preparing for the inspection
- the inspection
- follow up inspections
- maintaining the file
What are the five categories of heat energy?
chemical electrical mechanical nuclear solar
Measures the quantity of electricity?
Amps
Measures the pressure of electricity?
Voltage
Measures the resistance of electricity?
Ohm
What is the color coding and GPM on hydrants
Red - less than 500 GPM
Orange - 500-999 GPM
Green - 1000-1499 GPM
Light blue- Greater than 1500 GPM
What temperature flash point is a flammable rating?
Less than 100 degrees F
What is the NFPA standard for the National Electric Code?
NFPA 70
What is passive fire defense?
Fire walls & doors
What is active fire defense?
Sprinkler system
What is needed to stabilize a pre-cast tilt slab wall?
The roof
What size basement require sprinkler system protection?
2500 sq. ft. or more in size
What is the BTU generation of wood and paper:
Wood and paper generaete 8000 BTU’s
What is the BTU generation of plastic & liquids?
16,000 BTU’s
What happens to marble when subjected to heat?
Turns to chalk
What is the percentage of fire doors that actually work?
50%
What is the maximum height of an ordinary brick bearing wall?
six stories
In structural steel, a symbol such as W12x16 would mean what?
W- type beam
12 nominal depth of the beam
16 the weight per linear foot
The horizontal measurement on stairs is called the ______
the run
occupant load factor for figuring a library reading room?
50 net ft2
How many days notice is required when there is a change of address on a certificate of fitness?
10 days
At what occupant load is a fire alarm system required for assembly occupancies?
300 or greater
What is the rating given to a fire stops ability to maintain its physical integrity when exposed to fire and hose streams and to prevent the passage of flame?
F rating
How many days prior to using a tar kettle must a permit be obtained?
2 days
For a building to be classified as an apartment, how many units with independent kitchens is needed?
3 or more
To be classified as a dormitory, how many people must it provide sleeping accommodations for?
16 or more
The access opening to fire escapes shall not be higher than the floor by how many inches?
12 inches
is the fire resistance rating of an exit door in buildings of three stories or less
not less than 1-hour
Most spot welds are specified by what?
their diameter
What is the disadvantage of a dry chemical extinguisher?
Its residue creates a clean-up problem after system operation
Its residue creates a clean-up problem after system operation
18 GPM
What causes heat and smoke to spread upward then outward within a building?
convection
In the Standard Fire Test the temperature rises to 1000 degrees F in how many minutes?
5 minutes
The pattern in which masonry unites are laid
Bond
A pictorial drawing in which the parts of an assembly are separated to better illustrate the assembling process
Exploded pictorial drawing
More firefighters have been killed in?
ordinary construction
What will a chase do to a masonry wall?
weaken it
What is another name for Potassium Carbonate?
Wet chemical
A short column with a large cross section in proportion to its length is called:
a pier
What type of air filter releases little or no gas when subjected to fire?
Class 1
Fire load in pounds per square inch: 5= 10= 11-15= 16-20= 20+=
5= slight 10= moderate 11-15 - moderately severe 16-20= severe 20+= very severe
What is the first step in the burning process?
Fuel and oxygen mix properly
Turnstiles exceeding ___ shall be treated as revolving doors?
39 inches
What is the term used to describe the area of a building is off the property line as required by the code?
the setback
What is the pressure of a low misting operating?
175 psi
What is passive fire defense?
Fire walls & doors
What is the first step in the burning process?
What is the first step in the burning process?
At what occupant load is a fire alarm system required for assembly occupancies?
300 or greater
What is another name for Potassium Carbonate?
Wet chemical
