YOSHINO GYPSUM | Construction Methods | Fire resistant system | Fire resistant structure (Gapped system)

Fire resistant structure (Gapped system)

[Features]

When buildings are deformed due to strong winds, earthquakes, etc., it may cause cloth or paint finishing of the fire resistant wall inside to crack at the seams of gypsum board. By making the top layer board to be gapped, it will reduce the occurrence of this kind of cracks, and also reduce after-maintenance.

[Applications]
Parts of building that easily dislocated such as “staircase hall”, “upper parts of doors”, “T-shaped intersecting parts” etc.

Fitting example

S12 - Gapped spec

Fire resistance certification number	FP060NP-0289
Horizontal sectional view
Front view

【Fitting example (Wall system example: S12 - Gapped spec)】

■Example for installation in staircase hall

■T shaped intersection

■Example for installation above a door

Hyper Wall Z - Gapped spec

Fire resistance certification number

FP060NP-0389(1) [butt joint part]
FP060NP-0390(1) [gapped part]

Horizontal sectional view

* In case the gap width is 10mm (at least 0.12g per 1mm of gap width)

Front view

Compatible PVC hat-shaped joiner

Hat dimension		Manufacturer (shortened name)
Inner width	Outer width	Shinwa	Sato-Kozai	Soken
2mm	4mm	-	HZ-2	Hatto-Meji-2×5
3mm	6mm	-	-	Hatto-Meji-3×5
3mm	6.5mm	-	HM-3	-
6mm	8mm	Jizai-Meji-Hatto-6*	HZ-6	Hatto-Meji-6×5
8mm	10mm	-	HZ-8	-
		Internal corners, panel joints	Panel joints	Panel joints
		使用箇所

* When creating a gap at internal corners, be sure to use “Jizai-Meji-Hatto-6” for the gap between top layer boards. In addition, since the angle of flanges on "Jizai-Meji-Hatto-6" is changeable, it can be used as a panel joiner for the gap between top layer boards.

・Material: PVC plastic

・Dimension: Outer width: 10(±1.0）mm or less
Flange: 21（±2.1）mm
Height: 5（±0.5）mm
Thickness: 0.5（±0.1） to 1.0（±0.1）mm

Super Wall A - Gapped spec

When wall strength and surface hardness are required, we recommend "Super Wall A - Gapped Spec” that is excellent in robustness.

○Gaps should be treated by “coat with Tiger U Tight* + insert Tiger Joint Felt”
* Coat the intersected part between the gap and the joint of the base layer board
* The gap after treatment should be approximately approximately 5.5mm deep. If you decide to apply fitting together with Joiner, please use Joiners corresponding to the depth of gaps.
○“Super Wall A” has different runner and stud size range. Be careful.
○For more details regarding specification and installation methods, please refer to the Standard Instruction Manuals for Construction Works.

Fire resistance certification number	FP060NP-0383（1）
Horizontal sectional view

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Fire resistant structure (General fire resistant wall)
Fire resistant structure(S Wall)
S Wall - Standard spec,
Sealed joint spec, Extra layer spec, Double-sided spec, S Wall 65, S Wall 100, S Wall 100-i
S Wall WR
Gapped system
S12 - Gapped spec, Hyper Wall Z - Gapped spec, Super Wall A - Gapped spec
Quasi fire resistant system
Fire resistant encasement