AI Doors Flashcards

1
Q

What are the primary functions of fire doors?

A

To maintain compartmentation and to allow access to protected escape routes

Compartmentation limits fire spread and controls risk; escape routes are protected from fire and smoke.

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2
Q

What is the typical sight of a fire door that indicates misuse?

A

A fire door wedged open with a purpose-made wedge or a portable fire extinguisher

This misuse compromises the fire door’s effectiveness.

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3
Q

What are the relevant building regulations for fire door locations and ratings?

A

BS 9991 and BS 9999

These standards are based on risk-based design considerations.

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4
Q

What do fire doors provide in buildings with a stay put fire plan?

A

Means to seek refuge in a compartment

Essential for safe evacuation during a fire.

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5
Q

How do certain fire doors stay open under normal circumstances?

A

They are held open by an electro-magnet wired to a fire alarm system

The electro-magnet de-energizes during a fire, allowing the door to close.

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6
Q

What is the typical fire integrity rating duration for fire doors?

A

20, 30, 60, or 90 minutes

This rating indicates how long the door can resist fire.

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7
Q

What are the two types of fire-resisting doors?

A
  • Door assemblies
  • Doorsets
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8
Q

What is a door assembly?

A

Assembled on-site from components that have been fire tested

These components must work together to ensure fire resistance.

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9
Q

What is a doorset?

A

Supplied as a complete item with door frames and hardware

Specifically related to the testing and assessment of that configuration.

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10
Q

What is the significance of maintaining fire-resisting doors?

A

To ensure effective performance in fire conditions

Regular checks on sealing strips, hinges, and hardware are necessary.

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11
Q

What materials are fire doors commonly made from?

A
  • Timber
  • Metal
  • Composite
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12
Q

What is the standard thickness for a timber fire door leaf rated for 30 minutes?

A

44 mm

A 60-minute rated door typically has a thickness of 54 mm.

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13
Q

What classification indicates a fire door with both fire resistance and insulation properties?

A

EI classification

For example, an EI30 door provides both fire insulation and resistance.

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14
Q

What is the role of the door frame in a fire-resisting door assembly?

A

It must provide support and be compatible with the door leaf’s fire performance

The frame should also match the wall type for effective installation.

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15
Q

What types of frames are referenced in BS 8214:2016?

A
  • Solid timber door frames
  • Engineered timber door frames
  • Metal door frames
  • Composite door frames
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16
Q

What must be ensured about the ironmongery used on fire doors?

A

It must be compatible with the fire performance of the door assembly

Ironmongery includes hinges, latches, locks, and more.

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17
Q

What is the recommended number of hinges for fire doors?

A

At least three hinges

Hinges must be CE marked to BS EN 1935.

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18
Q

What is the function of automatic door hold-open/release devices?

A

To hold open self-closing fire doors and release them during a fire alarm

Useful for high-traffic areas or for individuals with mobility issues.

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19
Q

What is the primary purpose of fire shutters?

A

To protect openings in fire-resisting walls or floors

They must have an automatic self-closing device.

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20
Q

What must be ensured about the gaps around the door leaf?

A

They must have specially selected sealing strips to expand in fire conditions

These strips help seal movement gaps to prevent fire spread.

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21
Q

What should not be done with self-closing fire doors during normal use?

A

Hold open or allow them to swing free

Self-closing mechanisms are crucial for fire safety.

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22
Q

What is the function of CE marked Electro-magnetic devices?

A

They release the door when the fire detection and warning system operates

Comply with BS EN 1155.

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23
Q

What is a ‘free swing’ controlled door-closing device?

A

Allows the door leaf to work independently of the closing device in normal conditions

Resumes self-closing on fire detection.

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24
Q

When should automatic door hold-open/release devices be installed?

A

In conjunction with an automatic fire detection and warning system

Must protect escape routes.

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25
What conditions require the automatic device to release the fire-resisting door?
* Detection of smoke by an automatic detector * Actuation of the fire detection/alarm system manually * Failure of the fire detection and alarm system * Electrical power failure
26
True or False: Acoustically-activated door release mechanisms are suitable where the premises do not have a fire alarm system.
False ## Footnote They are not suitable in such cases.
27
What is an acceptable characteristic of door-fastening devices?
They should not impede people's escape ## Footnote Must be simple to operate.
28
What types of exit devices should be used in public premises?
* Panic exit devices (EN 1125) * Emergency exit devices (EN 179)
29
Fill in the blank: Doors used for means of escape must be able to be opened with _______.
One hand movement ## Footnote Such as turning a lever or pressing a push pad.
30
What is the purpose of fire and smoke resistant letterboxes?
To provide fire resistance in common passageways ## Footnote Required in assisted living accommodations or apartments.
31
What do air transfer grills do in normal use?
Allow air to circulate throughout the building ## Footnote They close during a fire to restrict fire and hot gases.
32
What is the function of intumescent seals?
Prevent fire and smoke from passing around the perimeter of a door leaf ## Footnote Essential for maintaining fire resistance.
33
What should smoke seals not be interrupted by?
Ironmongery positions ## Footnote Must maintain a continuous seal.
34
What should all fire doors be identified with?
Appropriate signage ## Footnote Examples include 'Fire door keep shut' and 'Keep locked shut'.
35
What must all fire shutters be fitted with?
An automatic self-closing device ## Footnote Ensures closure during a fire emergency.
36
What is third-party certification in relation to fire doors?
Indicates compliance with fire resistance standards ## Footnote Provides traceability and testing information.
37
What should be checked regarding intumescent fire or smoke seals?
* Condition * Full length and secure in the groove * Replacement with specified materials if damaged
38
What should be done if there is doubt about a fire door's performance?
Gain a professional opinion from a competent fire door inspector ## Footnote Ensures safety and compliance.
39
What can render prior fire test certifications null and void?
Any changes made to an existing fire door ## Footnote Must retain the original construction integrity.
40
What should be checked about the maintenance of closing and opening devices?
* Ensure doors close without binding * Check closing speed * Avoid wedging doors open
41
What should be done during the cleaning of fire doors?
Follow the manufacturer's instructions ## Footnote Ensure proper maintenance.
42
What is required for the certification label on fire doors?
It must not be tampered with or painted over ## Footnote A damaged or missing label invalidates certification.
43
What should be checked for air transfer grills or ironmongery fitted in door apertures?
Secure, fire resistant and in good condition ## Footnote This ensures the functionality and safety of fire doors.
44
How should fire doors be cleaned?
As per the manufacturer’s instructions ## Footnote Following manufacturer's guidelines prevents damage and maintains integrity.
45
Where can you find the certificate label on a fire door?
On the top of the door or below the bottom hinge on a doorset ## Footnote This label indicates compliance and certification.
46
What should you never do with the certificate label on a fire door?
Tamper with or paint over the label ## Footnote Tampering or painting can invalidate certification.
47
What happens if a fire door's label is damaged or non-existent?
It invalidates certification ## Footnote Certification is crucial for safety compliance.
48
What should you do if the label on a fire door is damaged?
Contact the manufacturer directly ## Footnote They can provide guidance on how to proceed.
49
What test procedures are specified for assessing fire resisting doors in the UK and Europe?
BS 476: Part 22,1987 or BS EN 1634-1 ## Footnote These standards ensure proper evaluation of fire door performance.
50
What does the test procedure for fire doors involve?
One face of the door being exposed to heat conditions for a predetermined time ## Footnote This evaluates the doorset's performance in stability and integrity.
51
How is the performance of a fire door tested?
With the upper part of the door under a small positive pressure ## Footnote This simulates fire conditions and tests integrity.
52
How many specimens are required to test a doorset from both directions?
Two specimens ## Footnote This is necessary to determine performance from both sides.
53
What standards are metal doorsets tested to?
BS 476: Part 22,1987 or BS EN 1634-1 ## Footnote Ensures consistent testing across different materials.
54
What issue can arise with some metal doorset designs during testing?
Distortion and bowing leading to potential gaps ## Footnote This can compromise the integrity of the doorset.
55
What is a risk associated with core materials and adhesives in metal doorsets?
They might release flammable gases ## Footnote This can lead to integrity failure under fire conditions.
56
What should not be assumed about door components tested with timber doors?
They will perform similarly with metal fire resisting doorsets ## Footnote Independent test evidence is required for verification.
57
What do fire shutters need to demonstrate?
Integrity for a specified time (30, 60, 90, 120 or 240 minutes) ## Footnote This is critical for fire safety in buildings.
58
What classification is required when a door opening is more than 25% of a compartment wall length?
Both integrity and insulation ## Footnote This classification ensures effective smoke and fire containment.
59
What type of smoke control is currently required in the UK?
Cold (ambient temperature) smoke ## Footnote This is tested according to EN 1634-3:2004.
60
What is the designation defined for ambient smoke control testing?
Sa ## Footnote Indicates the standard for cold smoke control in fire doors.