RCDD Chapter 7 Firestopping
Registered Communications Distribution Designer (RCDD)
Questions and Answers
- 1.
Pillows may not be used for a permanent installation
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Pillows may be a permanent installation.Rate this question:
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- 2.
Pillows cannot be used in place of a fire watch.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Pillows can be used in place of a fire watch.Rate this question:
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- 3.
Pillows, blocks, and bags represent a class of products that are frequently used in what size opening.
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
D. Medium to largeExplanation
Pillows, blocks, and bags are versatile products that can be used in various sizes of openings. While they can fit in smaller openings, they are more commonly used in medium to large-sized openings. This suggests that these products are designed to accommodate a range of sizes and can be used in a variety of situations where a medium to large-sized opening is present.Rate this question:
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- 4.
Silicone foams are mainly used for ______ openings
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
E. LargeExplanation
Silicone foams are mainly used for sealing large openings. This is because silicone foams have excellent expansion properties and can effectively fill and seal larger gaps and openings. They provide a strong and durable seal, preventing the entry of air, water, or other substances. Additionally, silicone foams have good resistance to temperature, weathering, and UV radiation, making them suitable for outdoor applications where large openings need to be sealed.Rate this question:
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- 5.
Intumescent sheets with a sheet metal backing may be used to seal what size openings:
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
E. LargeExplanation
Intumescent sheets with a sheet metal backing are designed to expand when exposed to heat, creating a barrier that seals off openings and prevents the spread of fire and smoke. These sheets are typically used in fireproofing applications and are effective in sealing large openings where fire and smoke could potentially pass through. Therefore, the correct answer is "Large" as intumescent sheets with a sheet metal backing can effectively seal large-sized openings.Rate this question:
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- 6.
Cementitious materials are best for what size openings:
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
E. LargeExplanation
Cementitious materials are best suited for large size openings because they are strong and durable, making them ideal for filling and sealing larger gaps. These materials have the ability to expand and contract, ensuring a secure and long-lasting seal. Additionally, cementitious materials provide excellent adhesion to various surfaces, further enhancing their effectiveness in sealing large openings.Rate this question:
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- 7.
According to tests and field observations, seals made of grout or plaster may crack, fracture, or be extremely difficult to re-penetrate.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Based on tests and field observations, it has been found that seals made of grout or plaster are prone to cracking, fracturing, or becoming very hard to penetrate again. This suggests that the statement is true, indicating that seals made from these materials may not be durable or easily repairable.Rate this question:
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- 8.
Firestop caulk or sealant is a good choice for permanent installation in what size openings
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
B. Small to mediumExplanation
Firestop caulk or sealant is a good choice for permanent installation in small to medium size openings because it is designed to seal gaps and prevent the spread of fire, smoke, and toxic gases. Small to medium size openings are more manageable and can be effectively sealed with caulk or sealant. For larger openings, other firestop measures such as fire-resistant barriers or fire-rated materials may be required. Therefore, small to medium size openings are the appropriate range for using firestop caulk or sealant.Rate this question:
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- 9.
Which type of material absorbs heat
- A.
Ablative
- B.
Endothermic
- C.
Intumescent
Correct Answer
B. EndothermicExplanation
Endothermic materials are able to absorb heat from their surroundings. This is due to the fact that these materials undergo a chemical reaction when exposed to heat, which requires energy to be absorbed from the surroundings. As a result, endothermic materials feel cool to the touch as they absorb heat energy, making them effective for applications such as cooling systems or heat shields. Ablative and intumescent materials, on the other hand, are not specifically designed to absorb heat but rather to provide protection against it through different mechanisms.Rate this question:
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- 10.
Putty is used for what size openings
- A.
Small
- B.
Small to medium
- C.
Medium
- D.
Medium to large
- E.
Large
Correct Answer
B. Small to mediumExplanation
Putty is a type of material that is used to seal gaps and fill openings. It is commonly used in construction and woodworking projects. The correct answer, "small to medium," indicates that putty is suitable for sealing openings of various sizes, ranging from small gaps to medium-sized openings. This implies that putty can effectively fill and seal gaps that are not too small or too large, making it a versatile option for a range of applications.Rate this question:
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- 11.
Intumescent materials:
- A.
Absorb heat
- B.
Harden and char
- C.
Swell
Correct Answer
C. SwellExplanation
Intumescent materials are substances that expand or swell when exposed to heat or fire. This swelling creates a barrier that insulates the material underneath, protecting it from the heat. Therefore, the correct answer is "Swell" because it accurately describes the behavior of intumescent materials when subjected to high temperatures.Rate this question:
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- 12.
How many types of nonmechanical firestops are there:
- A.
5
- B.
7
- C.
9
- D.
11
Correct Answer
C. 9Explanation
There are 9 types of nonmechanical firestops.Rate this question:
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- 13.
Common mechanical firestop systems are:
- A.
Cable transit system
- B.
Caulks and Sealant
- C.
Fire-rated pathway devices
- D.
Factory-fabricated sleeve systems
- E.
Intumescent wraps
Correct Answer(s)
A. Cable transit system
C. Fire-rated pathway devices
D. Factory-fabricated sleeve systemsExplanation
The common mechanical firestop systems mentioned include cable transit systems, fire-rated pathway devices, and factory-fabricated sleeve systems. These systems are used to prevent the spread of fire through openings in walls, floors, and ceilings. Cable transit systems are designed to seal and protect cables as they pass through fire-rated barriers. Fire-rated pathway devices provide a seal around pipes, conduits, and ducts to maintain the fire resistance of the barrier. Factory-fabricated sleeve systems are pre-manufactured devices that provide a fire-resistant seal around penetrations. These systems are essential for ensuring the safety and integrity of a building during a fire.Rate this question:
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- 14.
Mechanical firestop systems are considered highly durable, while providing:
- A.
Reliable pressure and environmental sealing
- B.
Cost effective barriers
- C.
Support for penetrating elements
- D.
EMI/EMP capabilities
- E.
Explosion proof integrity
Correct Answer(s)
A. Reliable pressure and environmental sealing
C. Support for penetrating elements
D. EMI/EMP capabilitiesExplanation
Mechanical firestop systems are highly durable and provide reliable pressure and environmental sealing. This means that they can effectively prevent the spread of fire and smoke by creating a barrier that can withstand high pressure and maintain a seal against environmental factors such as water, air, and dust. Additionally, these systems also offer support for penetrating elements, such as pipes and cables, ensuring that fire does not spread through these openings. They also have EMI/EMP capabilities, meaning they can protect against electromagnetic interference and electromagnetic pulses. Overall, mechanical firestop systems are a cost-effective solution that offers reliable protection against fire and other hazards.Rate this question:
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- 15.
Factory-fabricated sleeve systems provide all of the following except:
- A.
Cable support and protection
- B.
Elimination of on-site fabrication of sleeves from common building materials
- C.
Cable management
- D.
A means of supporting the device within the barrier to eliminate struts, clamps, or other means of mechanical support
Correct Answer
C. Cable managementExplanation
Factory-fabricated sleeve systems provide cable support and protection, eliminate on-site fabrication of sleeves, and provide a means of supporting the device within the barrier to eliminate struts, clamps, or other means of mechanical support. However, they do not provide cable management.Rate this question:
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- 16.
What test standard is used to qualify or test membrane penetration firestops.
- A.
F
- B.
T
- C.
H
- D.
L
- E.
None of the above
Correct Answer
E. None of the above -
- 17.
Additional testing may be required to confirm that the firestop can perform other functions, including: (which one does not belong)
- A.
Accomodating the pipe movement without violating the integrity of the seal
- B.
Providing protection against pressure or flooding
- C.
Adding to the load bearing of the wall
- D.
Resisting the effects of explosion
- E.
Special requirements (e.g. EMI/EMP barrier)
Correct Answer
C. Adding to the load bearing of the wall -
- 18.
The Canadian H (hose stream rating) is part of the U.S. F rating
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The Canadian H (hose stream rating) is part of the U.S. F rating. This means that the Canadian H rating is included within the U.S. F rating system. The U.S. F rating system is used to measure the fire resistance of a building material or assembly. The Canadian H rating specifically measures the resistance of a material to the impact of water from a hose stream during a fire. Therefore, it is accurate to say that the Canadian H rating is a component of the U.S. F rating system.Rate this question:
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- 19.
Hose stream tests can reach applications of ?
- A.
25 lbf/in squared
- B.
30 lbf/in squared
- C.
45 lbf/in squared
- D.
50 lbf/in squared
Correct Answer
B. 30 lbf/in squaredExplanation
Hose stream tests can reach applications of 30 lbf/in squared. This means that the force exerted by the hose stream during the test is 30 pounds per square inch. This level of force is sufficient for a variety of applications that require a certain level of pressure, such as firefighting or cleaning tasks.Rate this question:
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- 20.
Water resistance (W) is an optional test
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given correct answer is true because water resistance (W) is indeed an optional test. This means that it is not mandatory for a product to undergo this test in order to meet certain standards or regulations. Instead, the decision to conduct the water resistance test is left to the discretion of the manufacturer or the organization conducting the testing.Rate this question:
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- 21.
For water resistance (W) the system is subjected to a pressure head of _______ of water to determine whether any water leakage occurs
- A.
2 ft
- B.
3 ft
- C.
4 ft
- D.
5 ft
- E.
30 ft
Correct Answer
B. 3 ftExplanation
The system is subjected to a pressure head of 3 ft of water to determine whether any water leakage occurs. This means that the system is tested by applying a pressure equivalent to a column of water that is 3 ft high. If the system does not leak under this pressure, it can be considered water-resistant.Rate this question:
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- 22.
Air leakage (L) is a required test
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
this is an optional testRate this question:
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- 23.
The temperature on any unexposed surface can increase no more than ________ + ambient for the T rating.
- A.
250 degrees F
- B.
300 degrees F
- C.
325 degrees F
- D.
350 degrees F
Correct Answer
C. 325 degrees FExplanation
The temperature on any unexposed surface can increase no more than 325 degrees F + ambient for the T rating. This means that the maximum temperature that the surface can reach, in addition to the ambient temperature, is 325 degrees F.Rate this question:
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- 24.
For a construction or renovation project, firestop systems should be selected based on: (Which of the following to not belong)
- A.
Qualification testing
- B.
Cost
- C.
Installation efficiency
- D.
Future cable changes
- E.
Architectural requirements
Correct Answer
B. CostExplanation
When selecting firestop systems for a construction or renovation project, factors such as qualification testing, installation efficiency, future cable changes, and architectural requirements should be considered. However, cost should not be a determining factor in selecting firestop systems. The focus should be on ensuring the systems meet safety standards and requirements rather than solely considering the cost.Rate this question:
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- 25.
The components of a fire-qualified system must:
- A.
Be prepared under direction of a quality control procedure
- B.
Be inspected by a quality control inspector
- C.
Be periodically verified by an independent quality auditor
- D.
Bear the listing mark of the quality auditor
Correct Answer(s)
A. Be prepared under direction of a quality control procedure
C. Be periodically verified by an independent quality auditor
D. Bear the listing mark of the quality auditorExplanation
The correct answer is that the components of a fire-qualified system must be prepared under the direction of a quality control procedure, be periodically verified by an independent quality auditor, and bear the listing mark of the quality auditor. This means that the components need to go through a specific process guided by a quality control procedure to ensure they meet the necessary standards for fire safety. They also need to be regularly checked and verified by an independent quality auditor to maintain their compliance. Finally, they should bear the listing mark of the quality auditor as a visible indication of their qualification.Rate this question:
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- 26.
What is a critical requirement for reducing the severity of fire loss.
- A.
Compartmentation
- B.
Building codes
- C.
Building automation systems (BAS)
- D.
Standards and practices
Correct Answer
A. CompartmentationExplanation
Compartmentation is a critical requirement for reducing the severity of fire loss. Compartmentation involves dividing a building into separate compartments using fire-resistant materials, such as fire doors and walls. This helps to contain the spread of fire, smoke, and heat, limiting the damage and allowing occupants more time to evacuate safely. Building codes, building automation systems, and standards and practices also play important roles in fire safety, but compartmentation specifically addresses the physical barriers that can prevent fire from spreading throughout a building.Rate this question:
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- 27.
Controlling the movement of smoke and toxic fumes is a vital function of:
- A.
Air flow
- B.
Mass air flow
- C.
Air pressure
- D.
Compartmentation
Correct Answer
D. CompartmentationExplanation
Compartmentation refers to the division of a building into separate compartments, typically through the use of fire-resistant walls, floors, and doors. This helps to contain the spread of smoke and toxic fumes in the event of a fire, allowing occupants to safely evacuate and reducing the risk of further damage. By creating barriers between different areas, compartmentation helps to control the movement of smoke and fumes, making it a vital function in ensuring the safety of a building and its occupants.Rate this question:
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- 28.
A firestop is a special seal designed and tested to restore what:
- A.
Safe passage for employees
- B.
Atmospheric balance to each room
- C.
Pressure in each room
- D.
The barrier fire integrity
Correct Answer
D. The barrier fire integrityExplanation
A firestop is a special seal designed and tested to restore the barrier fire integrity. This means that it is meant to prevent the spread of fire through walls, floors, or other openings in a building. Firestops are crucial in maintaining the structural integrity of a building during a fire and ensuring that the fire does not spread to other areas.Rate this question:
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- 29.
What is the process of dividing a structure into fire zones:
- A.
Detection
- B.
Compartmentation
- C.
Suppresion
- D.
Prevention
Correct Answer
B. CompartmentationExplanation
Compartmentation is the process of dividing a structure into fire zones. This involves creating physical barriers such as fire-resistant walls and floors to contain a fire within a specific area and prevent its spread to other parts of the building. Compartmentation helps to limit the damage caused by a fire, as it restricts the movement of flames, smoke, and heat. It also allows for safe evacuation of occupants and provides more time for firefighters to control the fire. Therefore, compartmentation is an essential fire safety measure in buildings.Rate this question:
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- 30.
What may be required to perform secondary safety or security functions:
- A.
Designer
- B.
Cabling plant
- C.
Firestop seals
- D.
Telecommunications rooms
Correct Answer
C. Firestop sealsExplanation
Firestop seals may be required to perform secondary safety or security functions. Firestop seals are materials used to seal openings and gaps in buildings to prevent the spread of fire and smoke. These seals are installed in walls, floors, and ceilings to maintain the integrity of fire-rated barriers and prevent the passage of flames and toxic gases. By effectively sealing these openings, firestop seals help to contain fires and protect occupants and property. Therefore, firestop seals are an essential component of building safety and security systems.Rate this question:
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- 31.
Active systems rely on what.
- A.
External energy source
- B.
Their inherant properties
Correct Answer
A. External energy sourceExplanation
Active systems rely on an external energy source to function. This means that these systems require an input of energy from an outside source in order to operate. Without this external energy source, the active system would not be able to perform its intended function.Rate this question:
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- 32.
NRTL stands for:
- A.
Nationally Registered Testing Laboratory
- B.
Nationally Recongnized Testing Laboratory
- C.
National Registered Testing Liscense
Correct Answer
B. Nationally Recongnized Testing LaboratoryExplanation
NRTL stands for Nationally Recognized Testing Laboratory. This term refers to a laboratory that has been recognized by the Occupational Safety and Health Administration (OSHA) as being competent to perform testing and certification of products for safety purposes. These laboratories are responsible for evaluating and testing various products to ensure that they meet the required safety standards and regulations.Rate this question:
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- 33.
For international standards, "E" ratings are __________ ratings, which are similar to "F" ratings in the United States.
- A.
Electrical
- B.
Efficiency
- C.
Endurance
Correct Answer
C. EnduranceExplanation
"E" ratings are endurance ratings, which means they indicate the ability of a product or system to withstand and continue functioning under specific conditions for a prolonged period of time. This is similar to "F" ratings in the United States, where "F" also signifies endurance or the ability to withstand certain conditions without failure.Rate this question:
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- 34.
When a steel sleeve membrane penetration system is used with drywall, what is the F rating?
- A.
1 hour
- B.
1.5 hours
- C.
2 hours
- D.
2.5 hours
Correct Answer
A. 1 hourExplanation
The F rating for a steel sleeve membrane penetration system used with drywall is 1 hour. This means that the system can provide fire resistance for up to 1 hour, preventing the spread of fire through the penetration.Rate this question:
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- 35.
Concrete floors or walls have an F rating of:
- A.
2 hours
- B.
3 hours
- C.
4 hours
- D.
5 hours
Correct Answer
B. 3 hoursExplanation
Concrete floors or walls have an F rating of 3 hours. This means that they can withstand fire for up to 3 hours before their structural integrity is compromised. This rating is determined based on the fire resistance of the concrete material and its ability to resist heat and flames. A higher F rating indicates a longer duration of fire resistance, making concrete walls or floors with a 3-hour rating more suitable for buildings where fire protection is crucial.Rate this question:
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- 36.
Study picture on page 7-99 (Intumescent block)
- A.
OK
- B.
NO
Correct Answer
A. OKExplanation
The correct answer is "OK" because the picture on page 7-99 shows an intumescent block, which is a fire-resistant material used to prevent the spread of fire. The block appears to be in good condition and properly installed, indicating that it is effective in providing fire protection.Rate this question:
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- 37.
Study pictures on page 7-64 (Drywall with steel pipes or conduit) and 7-65 (Drywall with cable)
- A.
OK
- B.
NO
Correct Answer
A. OKExplanation
The correct answer is "OK" because the question mentions studying pictures on page 7-64 and 7-65 which show drywall with steel pipes or conduit and drywall with cable. Since the answer is "OK," it suggests that there are no issues or problems with the pictures or the content shown in them.Rate this question:
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- 38.
For contractor/installer documentation, BICSI recommends that the installer:
- A.
Label each penetration upon firestop completion
- B.
After labeling, take photo/video of each penetration and submit it to the AHJ
- C.
Inspect each firestop after 6 months to ensure no materials have come loose.
Correct Answer(s)
A. Label each penetration upon firestop completion
B. After labeling, take photo/video of each penetration and submit it to the AHJExplanation
The correct answer suggests that for contractor/installer documentation, BICSI recommends labeling each penetration upon firestop completion. Additionally, the installer should take a photo/video of each penetration and submit it to the AHJ (Authority Having Jurisdiction). This ensures proper record-keeping and compliance with regulations. Inspecting each firestop after 6 months is not mentioned in the question or answer.Rate this question:
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- 39.
During a fire, firefighters often vent the roof to:
- A.
Prevent the heat buildup
- B.
Allow easier access to the fire below
- C.
Reduce the possibility of roof collapse
- D.
Provide an emergency exit
Correct Answer(s)
A. Prevent the heat buildup
C. Reduce the possibility of roof collapseExplanation
During a fire, venting the roof serves multiple purposes. Firstly, it helps prevent the buildup of heat by allowing the hot air and smoke to escape, which can help in reducing the intensity of the fire. Secondly, it helps in reducing the possibility of roof collapse by releasing the pressure and heat from the burning structure. By venting the roof, firefighters create a pathway for the heat and smoke to exit, thereby minimizing the risk of structural failure.Rate this question:
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- 40.
If the floor or ceiling is made of wood, what firestopping method should be used?
- A.
Glass fiber batt for the full thickness of the floor element
- B.
Mineral wool insulation for the full thickness of the floor element
- C.
Putty for half the thickness of the floor element
- D.
Foam backer rods and then putty for the full thickness of the floor element
Correct Answer
B. Mineral wool insulation for the full thickness of the floor elementExplanation
Mineral wool insulation is the correct firestopping method to use if the floor or ceiling is made of wood. Mineral wool insulation is a non-combustible material that can withstand high temperatures and prevent the spread of fire. It is commonly used in firestopping applications to fill gaps and provide a barrier against the passage of flames and smoke. Using mineral wool insulation for the full thickness of the floor element ensures that the entire area is properly protected, reducing the risk of fire spreading through the wood structure.Rate this question:
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- 41.
Firestopping of ceiling penetrations is especially critical.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Firestopping of ceiling penetrations is especially critical because ceilings often contain multiple penetrations such as electrical wiring, pipes, and HVAC ducts. These penetrations can provide a pathway for fire and smoke to spread from one area of a building to another. Proper firestopping materials and techniques are necessary to seal these penetrations and prevent the spread of fire, heat, and toxic gases. Failure to adequately firestop ceiling penetrations can compromise the fire resistance of the building and put occupants at risk. Therefore, it is true that firestopping of ceiling penetrations is especially critical.Rate this question:
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- 42.
The guidelines for firestopping penetrations in hollow lath and plaster are_______ to the guidelines for drywall.
- A.
Similar
- B.
Opposite
- C.
Identical
Correct Answer
C. IdenticalExplanation
The correct answer is "Identical." This means that the guidelines for firestopping penetrations in hollow lath and plaster are the same as the guidelines for drywall. In other words, the requirements and recommendations for firestopping in both types of construction are identical.Rate this question:
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- 43.
Through penetrations for cable tray must be:
- A.
Not firestopped to allow additional cables to be added to the tray
- B.
Framed out with studs when installed in frame walls
- C.
Allow at least 321 mm (6 in) of clearance on all sides of the cable tray
- D.
Sealed with a firestopping system that is qualified and installed according to the manufacturer's instructionss
Correct Answer(s)
B. Framed out with studs when installed in frame walls
D. Sealed with a firestopping system that is qualified and installed according to the manufacturer's instructionssExplanation
Through penetrations for cable tray must be framed out with studs when installed in frame walls and sealed with a firestopping system that is qualified and installed according to the manufacturer's instructions. This ensures that the cable tray is securely supported and that any openings in the wall are properly sealed to prevent the spread of fire and smoke. The framing with studs provides structural support and stability for the cable tray, while the firestopping system ensures that the penetration is adequately sealed to maintain the fire rating of the wall.Rate this question:
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- 44.
An electrical apparatus should not penetrate drywall, which is not qualified for use in fire-rated assemblies with multiple penetrations exceeding _________ in surface area per 9.3 sq m (100sq ft) of wall area.
- A.
32,208 sq mm (50 sq in)
- B.
64,516 sq mm (100 sq in)
- C.
96,724 sq mm (150 sq in)
- D.
129,032 sq mm (200 sq in)
Correct Answer
B. 64,516 sq mm (100 sq in)Explanation
Drywall is not qualified for use in fire-rated assemblies with multiple penetrations exceeding 64,516 sq mm (100 sq in) in surface area per 9.3 sq m (100 sq ft) of wall area. This means that if there are multiple electrical apparatuses penetrating the drywall and the total surface area of these penetrations exceeds 64,516 sq mm (100 sq in) per 9.3 sq m (100 sq ft) of wall area, then the drywall is not suitable for use in fire-rated assemblies.Rate this question:
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- 45.
An electrical apparatus should not penetrate drywall, which is not qualified for use in fire-rated assemblies with individual penetrations exceeding _________ in surface area of one face of a stud wall.
- A.
2500 mm^2 (4 sq in)
- B.
5,000 mm^2 (8 sq in.)
- C.
10,000 mm^2 (16 sq in)
- D.
12,500 mm^2 (20 sq in)
Correct Answer
C. 10,000 mm^2 (16 sq in)Explanation
Drywall is not qualified for use in fire-rated assemblies with individual penetrations exceeding 10,000 mm^2 (16 sq in) in surface area of one face of a stud wall. This means that any electrical apparatus that penetrates the drywall and exceeds this surface area limit would not be considered safe for use in fire-rated assemblies.Rate this question:
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- 46.
A poke-thru must be tested for:
- A.
Physical integrity
- B.
Mechanical integrity
- C.
Electrical integrity
- D.
Hydro-mechanical integrity
Correct Answer(s)
B. Mechanical integrity
C. Electrical integrityExplanation
A poke-thru must be tested for mechanical integrity to ensure that it is structurally sound and can withstand physical stress or damage. This includes checking for any cracks, breaks, or weak points in the poke-thru. Additionally, it must be tested for electrical integrity to ensure that it can safely and effectively conduct electricity without any faults or malfunctions. This involves checking for proper wiring connections, insulation, and grounding.Rate this question:
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- 47.
A preferred solution to firestopping existing penetrations is to use a ____________ system assembly that can be installed around the existing cables without interrupting service.
- A.
Multi-piece
- B.
Split-sleeve
- C.
Bi-sleeve
- D.
Combo-sleeve
Correct Answer
B. Split-sleeveExplanation
A preferred solution to firestopping existing penetrations is to use a split-sleeve system assembly that can be installed around the existing cables without interrupting service. This type of system allows for easy installation and removal, making it a convenient option for firestopping existing penetrations. It also ensures that the cables remain protected from fire and smoke, enhancing the overall safety of the building.Rate this question:
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- 48.
Poke-thru must comply with:
- A.
UL-263
- B.
UL-258
- C.
UL-275
- D.
UL-242
Correct Answer
A. UL-263Explanation
The given answer UL-263 refers to a specific compliance standard that Poke-thru must adhere to. UL-263 is a standard set by Underwriters Laboratories (UL) which specifies the requirements for fire tests of building construction and materials. It ensures that the Poke-thru meets the necessary safety standards for fire resistance.Rate this question:
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- 49.
Glass fiber batt insulation melts around?
- A.
546 degrees C (1000 degrees F)
- B.
649 degrees C (1200 degrees F)
- C.
796 degrees C (1500 degrees F)
- D.
1093 degrees C (2000 degrees F)
Correct Answer
B. 649 degrees C (1200 degrees F)Explanation
Glass fiber batt insulation is made from glass fibers that are woven into a flexible mat. This type of insulation is commonly used in buildings to reduce heat transfer and improve energy efficiency. The melting point of glass fiber batt insulation is an important factor to consider when designing and installing insulation in a building. The correct answer of 649 degrees C (1200 degrees F) suggests that the insulation will start to melt at this temperature. This information is crucial for ensuring that the insulation is not exposed to temperatures that could cause it to degrade or lose its effectiveness.Rate this question:
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- 50.
The ring outside of the pipe or cable being protected and inside the hole or sleeve system is known as:
- A.
Core drill
- B.
Pass through
- C.
Annular space
- D.
Sleeve area
Correct Answer
C. Annular spaceExplanation
The ring outside of the pipe or cable being protected and inside the hole or sleeve system is known as the annular space. This refers to the empty space or gap between the pipe or cable and the surrounding hole or sleeve. It is important to have an annular space to allow for movement and flexibility of the pipe or cable, as well as to provide insulation and protection.Rate this question:
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Mar 22, 2023Quiz Edited by
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Feb 28, 2012Quiz Created by
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