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Fire in Buildings > Fire Rules > Flashcards

Fire Rules Flashcards

1
Q

Structural Steel Encasement: Which approved modifications can a level five operator make?

A

White book system claims and drawings

Approved construction detail drawings

NBS Specifications

  • Outside of this - Level 3 approval is necessary
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2
Q

Structural Steel Encasement: Is it possible to increase the fire duration of a system from level 5 advice?

A

No the fire durations must stay. A 30 minute system stays a 30 minute system

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3
Q

Structural Steel Encasement: The rules only consider fire protection - what other performance criteria will need to be considered if a change is made?

A

Acoustics, cold state spans, buildability, reaction to fire etc.

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4
Q

Structural steel encasement: Can a claim to EN 13381-4 be used to substantiate BS476: Part 20?

A

Yes a claim to En 13381-4 can be used to substantiate BS46: Part 20

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5
Q

Structural Steel Encasement: Can a claim to BS476: Part 20 be used to substantiate EN 13381-4?

A

No a claim to BS476: Part 20 cannot be used to substantiate a claim to EN 133381-4

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6
Q

Structural Steel Encasement: RE a change of Board linings in Glasroc FIRECASE, FireCase encasement system?

A

The board thickness can be increased
The number of layers can be increased
The board length can be increased or decreased (Tested joint configuration must be maintained e.g. 600mm staggers

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7
Q

Structural Steel Encasement: RE a change of lining boards (Gyproc FireLine on GypLyner)

A
  • The board thickness can be increased
  • The number of layers can be increased
  • Any board can be changed to its moisture resistant version
  • The board length can be increased or decreased (Tested joint configuration must be maintained)
  • 15mm DuraLine or DuraLine MR can replace 12.5mm or 15mm Gyproc FIreLine for columns, buildability considered
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8
Q

Structural Steel Encasement: Change of lining boards (Glasroc F Multiboard or Glasroc F Firecase on GypLyner)

A
  • The board thickness can be increased
  • The number of layers can be increased
  • The board length can be increased or decreased (Tested joint ocnfiguration must be maintained e.g. 600mm staggers)
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9
Q

Structural Steel Encasement: Change in structural steelwork

A

Systems can be used on universal columns, beams, I joists, tees, angles, square hollow sections and rectangular hollow sections, providing either 3 or 4 sided boxed protection up to maximum A/V of 260m-1 (depending on temperature table being used)
- The maximum permitted section depth is 600mm (sectinos over this size require additional considerations)

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10
Q

Structural Steel Encasement - Change in support system

A
  • Steel angle fixing centres can be closed down (e.g. from 600mm to 300mm)
  • GypLyner GL10 fixing centres can be closed down (e.g. from 800mm to 600mm)
  • MF sections can replace GypLyner (BS476 only)
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11
Q

Structural Steel Encasement: Change in fasteners

A
  • Fixing lengths cna be increased (Screws must always have at least 10mm penetration into metal)
  • Fixing centres can be closed down using the same fixing method (E.g. change 150mm to 100mm)
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12
Q

Structural Steel Encasement: Change in finishing system

A
  • FireCase systems can be left unfinished or finished with any type of Gyproc Jointing Material or skim plastered
    GypLyner Encase systems with Glasroc F Firecase or Glasroc F multiboard can be left unfinished or finished with any type of Gyproc jointing material or be skim plastered
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13
Q

Structural Steel Encasement: Isover Mineral Wool Quilts

A

Steel Beam and colmn web cavities can be filled with Isover Mineral Wool Quilts as required for acoustics

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14
Q

Non-Loadbearing Partitions: Test standard compatibility - A claim to EN 1364-1

A

A claim to EN 1364-1 can be used to substantiate BS476: Part 22 (But not the other way around)

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15
Q

Non-Loadbearing Partitions: Increase in maximum heights

A
  • For BS476: Part 22 refer to the cold state height tables in the whitebook
  • For EN1364-1 refer to a level 3 consultant
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16
Q

Non-Loadbearing Partitions: Change of board linings

A
  • Any board can be changed to its MR or Duplex version
  • Tapered edge boards can be changed to square edge and vice versa
  • Any board can be changed to a greater thickness of the same type of board
  • Additional layers of board can be added on either side
  • Board length can be increased or decreased
  • Board width can be decreased (Tested joint configuration must be maintained.
  • With the exception of shaftwall systems, any board layer (inner and / or outer layer, on one or both sides can be changed to a different board type occupying a higher position in tables 1a and 1b in the fire rules document
    For Shaftwall systems DuraLine can replace any FireLine board layers
    • 12.5mm Gyproc Habito can replace 12.5mm Gyproc WallBoard in any GypWall CLASSIC
    partition system (any layer). However fixing centres need to be consistent with the ‘parent’
    WallBoard partition specification (e.g. usually 300mm centres)
    • 12.5mm Glasroc H TILEBACKER can replace 12.5mm Gyproc WallBoard in any GypWall CLASSIC
    partition system (single or outer layer).
    • For other board combinations in a GypWall partition system refer to a TAC Technical
    Consultant
17
Q

Non-Loadbearing Partitions: Table 1a - Changes to board layers EN-1364-1

A
  • 15mm Fireline / 15mm Duraline / 15mm SoundBloc F
  • 12.5mm Fireline
  • 15mm SoundBloc
  • 12.5mm SoundBloc
  • 15mm Wallboard
    12. 5mm Wallboard
18
Q

Non-Loadbearing Partitions: Table 1b - Changes to board layers BS 476: Part 22

A
  • 15mm Fireline / 15mm Duraline / 15mm SoundBloc F
  • 12.5mm Fireline
  • 15mm SoundBloc
  • 15mm Wallboard
  • 12.5mm SoundBloc
  • 12.5mm Wallboard
19
Q

Non-Loadbearing Partitions: Change in metal studs

A

Studs can be changed to a deeper stud of at least the same guage
C studs can be changed to an Acoustic stud / I stud / boxed stud
Studs can be changed to a higher guage
Stud centres can be closed down
Standard head and base channels can be changed to deep or extra deep channels
GFS1 Fixing strap can be changed to GFT1 Fixing T (And vice versa)

20
Q

Non-Loadbearing Partitions: Change in timber studs

A
  • The stud depth can be increased
  • The stud width can be increased
  • The stud centres can be closed down
  • Timber noggings can be added (but not removed)
21
Q

Non-Loadbearing Partitions: Change in fasteners

A
  • Fixing lengths can be increased (minimum 25mm into timber 10mm into metal)
  • For timber stud partitions nails can be changed to drywall screws (not vice versa)
  • For metal stud partitions drywall screws can be changed to jack-point screws (where guage allows)
  • Fixing centres can be closed down using the same fixing method (e.g. 300mm to 150mm)
22
Q

Non-Loadbearing Partitions:

Change in finishing system

A

Partitions can be finished with any type of Gyproc Jointing Material or be skim plastered

23
Q

Non-Loadbearing Partitions: Isover mineral wool quilts BS476:Part 22

A

Isover glass wool insulation can be added to a non-quilt system or increased in thickness and / or density

24
Q

Non-Loadbearing Partitions: Isover mineral wool quilts En 1364-1

A

Isover glass wool insulation can be added to a non - quilt system or increased in thickness, however the partition is capped at 3000mm. For systems with cold state hieights normally below 3000mm it is not possible to increase the height above the published value

25
Q

Non-Loadbearing Partitions: Additional linings

A
  • A Gyproc Thermal laminate can be added to either side of a partition system as an additional outer layer (Assume no additional contribution to the fire resistance performance)
  • An additional full face plywood inner layer can be added (assume no additional contribution to the fire resistance performance. All fixings must be into the framework - see guidance notes re: deflection head
  • Shadow gaps under recessed skirting can be accomodated in a partition system through the use of an additional sacrificial layer.
26
Q

Non-Loadbearing Partitions: Gypwall Deflection heads

A
  • The deflection head principles shown in the white book can be used for any gypwall metal stud partition with studs 48mm or longer
  • GypWall metal stud partitions with fire durations of 90 minutes, 120 minutes or greater must use the stone mineral wool detail shown in the white book
  • For movement of 15mm - 50mm Glasroc F or timber should be used to form the dropped soffit
  • Note that there is an additional guidance document for BS476: Part 22 with additional dropped soffit information
27
Q

Non-Loadbearing Partitions: systems: Shaftwall Deflection Heads

A
  • For movement of 15mm or less Gyproc CoreBoard or GlasrocF should be used to form the dropped soffit
  • For movement between 15mm - 50mm glasroc f should be used to form the dropped soffit

Fire in Buildings (2 decks)

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