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Fire & Sound Systems

Quasi-Fire Resistant Systems

The quasi-fire resistant wall products described hereinafter include the products accredited by Ministry of Land, Infrastructure and Transport, the products accredited by Gypsum Board Industry Association, and the products meet the requirements specified by Ministry of Land, Infrastructure and Transport.

Quasi-Fire Resistant Walls with Fire Resistance of up to 45 minutes Accredited by Ministry of Land, Infrastructure and Transport in Japan (The accreditation was obtained by Yoshino Gypsum)
(1) Yoshino Quasi-Fire Resistant Super Wall C, SF45, WF45, WP45
  • The standard quasi-fire resistant walls incorporating the standard plasterboard, Tiger Board and the hard plasterboard, Tiger Super Hard

Name of Wall Wall Structure (Horizontal Sectional View)
Yoshino Quasi-Fire Resistant Super Wall C
*Joint treatment is required.
Yoshino Quasi-Fire Resistant SF45
Yoshino Quasi-Fire Resistant WF45
* Conventional Wood Frame Construction
Yoshino Quasi-Fire Resistant WP45
* Two-by-Four System
*Loadbearing : Wall systems which bear loads from buildings
*Non-loadbearing : Wall systems which do not bear loads from buildings

Quasi-Fire Resistant Walls with Fire Resistance of up to 60 minutes Accredited by Ministry of Land, Infrastructure and Transport in Japan (The accreditation was obtained by Yoshino Gypsum)
(2) Yoshino Quasi-Fire Resistant Glass Rock MF 60
  • The quasi-fire resistant walls incorporating the new type of paperless plasterboard Tiger Glass Rock

Wall Structure (Horizontal Sectional View)

*Joint treatment is required.

Quasi-Fire Resistant Walls with Fire Resistance of up to 45 minutes or 60 minutes Accredited by Gypsum Board Industry Association

Quasi-Fire Resistance Wall Structure (Horizontal Sectional View)
45 minutes
*Joint treatment is required.
*Structural steel materials used for bearing vertical loads shall be 2.3 mm thick or more.

*Joint treatment is required for 9.5 mm water resistant plasterboards.
60 minutes
*Joint treatment is required.
*Structural steel materials used for bearing vertical loads shall be 2.3 mm thick or more.
*Loadbearing : Wall systems which bear loads from buildings
*Non-loadbearing : Wall systems which do not bear loads from buildings

Quasi-Fire Resistant Walls which meet the requirements specified by National Land and Transportation Ministry in Japan

Quasi-Fire Resistance Wall Structure (Horizontal Sectional View)
45 minutes
* Use studs and components made of wood or steel

* Use studs and components made of wood or steel

* Use studs and components made of wood or steel

* Do not use noncombustible studs or any other noncombustible components (e.g. bonded wood).

Quasi-Fire Resistance Wall Structure (Horizontal Sectional View)
60 minutes
*Backside of wall shall be batten (only when one layer of board is applied to each side of wall)
*Use studs and components made of wood or steel

*Use studs and components made of wood or steel

*Use studs and components made of wood or steel

*Use studs and components made of wood or steel
*Loadbearing : Wall systems which bear loads from buildings
*Non-loadbearing : Wall systems which do not bear loads from buildings



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