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SS - APC revision Building Surveying > Partition, deflection encasement > Flashcards

Partition, deflection encasement Flashcards

1
Q

What is the required depth of packer for a deflection of 0-5mm?

A

12.5mm Siniat Fire Board

Requires Siniat U Track (UT)

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2
Q

What is the required depth of packer for a deflection of 6-10mm?

A

15mm Siniat Fire Board

Requires Siniat U Track (UT)

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3
Q

What is the required depth of packer for a deflection of 11-20mm?

A

2x 12.5mm Siniat Fire Board

Requires Siniat Deep Flange U Track (UDT)

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4
Q

What is the required depth of packer for a deflection of 21-25mm?

A

2x 15mm Siniat Fire Board

Requires Siniat Deep Flange U Track (UDT)

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5
Q

What is the required depth of packer for a deflection of 26-30mm?

A

3x 15mm Siniat Fire Board

Requires Siniat Extra Deep Flange U Track (UXT)

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6
Q

What is the required depth of packer for a deflection of 31-40mm?

A

3x 15mm Siniat Fire Board

Requires Siniat Extra Deep Flange U Track (UXT)

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7
Q

What is the required depth of packer for a deflection of 1-15mm according to Gyproc?

A

19mm Gyp Core board or 20mm Glassrock fire case

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8
Q

What is the required depth of packer for a deflection of 16-25mm according to Gyproc?

A

2x 15mm Glassrock fire case

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9
Q

What is the required depth of packer for a deflection of 46-50mm according to Gyproc?

A

2x 30mm Glassrock fire case

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10
Q

What is the deflection head makeup for 0-5mm deflection?

A

1 x 12.5mm Fire Board Packer

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11
Q

What is the deflection head makeup for 30-40mm deflection?

A

3 x 15mm Fire Board Packer

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12
Q

What is placed between each packer, soffit, and stud track?

A

Intumescent mastic

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13
Q

What is the minimum engagement depth for studs into track?

A

20mm

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14
Q

What is the purpose of a deflection head?

A

Allow for movement/deflection in the building materials floor deck

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15
Q

Are deflection heads always needed?

A

No, not on older buildings where open expanses of floor are limited

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16
Q

Is the deflection always down?

17
Q

What are cloaking elements?

A

Two 50mm wide strips of Glasroc F FireCase required over the deflection gap

18
Q

What alternatives can be used instead of cloaking elements?

A

Gypframe GA4 or GA7 Steel Angle

19
Q

What guidance is provided for deflection heads?

A

British Gypsum - Best practice guidance - deflection heads

SS - APC revision Building Surveying (27 decks)

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