Required wall strength
Performance required for dry-type separation wall
There are various test methods for checking the strength required for wall using a dry board like a gypsum board.
As example of these tests (tests to verify official required performance), there are as follows:
![](img/18/image01.png)
Structural Performance (Flexural Rigidity) of Walls Under Out-Plane Force
The ability to withstand deformation even if three adults (180 kg) apply force to the wall surface.
![](img/18/image02.png)
Structural Performance of Walls Under In-Plane Force
There is no abnormality when the building shakes due to earthquake or wind
![](img/18/image03.png)
Shock resistance (Heavyweight impact)
There is no abnormality even if an adult hits the surface of the wall
![](img/18/image04.png)
Shock resistance (Lightweight impact)
There is no abnormality even if a hard object hits the surface of the wall
![](img/18/image05.png)
Yield strength against screw pulling
Screws will stay safe and not be pulled out even if furniture is fixed in place with screws.
Wall system with enhanced rigidity “A-2000・WI Strong”
It is ideal for places where more strength than a normal wall is required. For example, hallway in schools or where there is a possibility that furniture may collide when moved.
Hard-type gypsum board “Tiger Super Hard”, fire resistant gypsum board “Tiger Board・Type Z”, and light gauge steel framings (studs) are combined to provide a wall system with enhanced rigidity,
“A-2000・WI Strong”, thus making it capable of achieving higher levels of performance and strength.