HOME Construction Methods Common wall and ceiling methods Wooden wall and ceiling base, steel wall and ceiling base

Wooden wall and ceiling base, steel wall and ceiling base

Framings for walls and ceilings are classified into two types, gwood framingh and gsteel framingh.

Wood stud framing (from the gGypsum Board Handbookh published by the Gypsum Board Association of Japan)

Wall Framing

Types, sizes, and stud spacing for wooden wall framing (examples)
Applications Type of Component Dimension (mm) Stud spacing (mm)
Wooden Post-and-Lintel System Stud (for joints) At least 45 ~ 105 500 or less
Stud (for other than joints) At least 30 ~ 105 500 or less
Two-by-Four System Vertical plates At least 38 ~ 89, at least 38 ~ 140, at least 38 ~ 189 500 or less
Upper Plates, Bottom Plates -
  • Based on gSpecifications for Residential Buildings with Ministerial Regulation Standard Compliant Fire-Resistant Constructionh from g[Flat 35] Compatible Wooden Residential Building Construction Specifications - 2016 Versionh by the Japan Housing Finance Agency
  • Source: g[Flat 35] Compatible Wooden Residential Building Construction Specifications - 2016 Versionh by the Japan Housing Finance Agency. Publisher: Inoue Shoin Co., Ltd.

Ceiling Framing

Types, sizes, and stud spacing for wooden ceiling framing (examples)
Applications Type of Component Dimension (mm) Stud spacing (mm)
Common ceilings Joist At least 30 ~ 38 / At least 35 ~ 35 340 or less
Binder At least 30 ~ 38 / At least 35 ~ 35 1000 or less
Hanger At least 30 ~ 38 / At least 35 ~ 35 1000 or less
Ceilings in Two-by-Four Systems Ceiling beam or floor beam of the floor above, and others 500 or less
  • Based on gSpecifications for Residential Buildings with Ministerial Regulation Standard Compliant Fire-Resistant Constructionh from g[Flat 35] Compatible Wooden Residential Building Construction Specifications - 2016 Versionh by the Japan Housing Finance Agency
  • Source: g[Flat 35] Compatible Wooden Residential Building Construction Specifications - 2016 Versionh by the Japan Housing Finance Agency. Publisher: Inoue Shoin Co., Ltd.
Steel Wall Framing (Studs, runners, and steady braces are JIS standard products)
Type of Steel Wall Framing Components (JIS A6517 compliant)
Unit: mm
Component Studs Runners Steady Braces
Type Symbol Dimension Symbol Dimension Symbol Dimension
Type 50 WS-50 50~45~0.8 WR-50 52~40~0.8 WB-19 19~10~1.2
Type 65 WS-65 65~45~0.8 WR-65 67~40~0.8 WB-25 25~10~1.2
Type 75 WS-75 75~45~0.8 WR-75 77~40~0.8
Type 90 WS-90 90~45~0.8 WR-90 92~40~0.8
Type 100 WS-100 100~45~0.8 WR-100 102~40~0.8

Type of Stud and Runner
Unit: mm
Component Studs Runners Steady Braces Reinforcing materials for doorways or any other openings Mounting Metallic Materials Classification by height of studs
Type
Type 50 50~45~0.8 52~40~0.8 19~10~1.2 \ \ 2.7m high or lower
Type 65 65~45~0.8 67~40~0.8 25~10~1.2 -60~30~10~2.3 L-30~30~3 4.0m high or lower
Type 90 90~45~0.8 92~40~0.8 -75~45~15~2.3 L-50~50~4 Higher than 4.0 m and
4.5m or lower
Type 100 100~45~0.8 102~40~0.8 2-75~45~15~2.3 Higher than 4.5m and
5m or lower

Steel Ceiling Framing (Furrings and furring receivers are JIS standard products)
Unit: mm
Component Single furring Double furring Furring receiver
Type Symbol Dimension Symbol Dimension Symbol Dimension
Type 19 CS-19 25~19~0.5 CW-19 50~19~0.5 CC-19 38~12~1.2
Type 25 CS-25 25~25~0.5 CW-25 50~25~0.5 CC-25 38~12~1.6
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