Japan composite construction codes

The composite construction codes supported by Verisk Synergy Studio.

Note: Verisk Synergy Studio applies non-engineered building damage distributions to the following construction classes: 101, 102, 103, 104, 111, 112, 113, 114, 115, 173, 174, 178, 179, 261. This action occurs regardless of occupancy class, including the industrial facility (400-series) occupancy classes..

For information about supported codes and limitations for specific models, refer to the model documentation that is available on the Client Portal (login required).

Construction code Category Description
161 M: Fire-resistant reinforced concrete apartments and masonry dwellings New residential fire code; concrete, concrete block, masonry, stone, fire-resistant dwellings.
162 T: Fire-resistant non-apartment dwellings including reinforced concrete, masonry, and steel New residential fire code; steel, semi-fire-resistant.
163 H: Other Residential Dwellings (buildings other than M, T) New residential fire code; other dwellings.
164 1: Fire-resistant reinforced concrete and masonry buildings New commercial fire code; concrete, concrete block, masonry, stone, fire-resistant dwellings.
165 2: Semi-fire-resistant and steel buildings New commercial fire code; steel, semi-fire-resistant.
166 3: Other Commercial Dwellings (buildings other than 1, 2) New commercial fire code; other dwellings.
171 A: Reinforced Concrete, Steel with Fire Insulation Dwellings Main structure (column, beam, and floor) is constructed of concrete or steel covered with noncombustible material. Roof and external walls are built using nonflammable material.
172 B: General Steel Dwellings (1) External walls consist of any one of the following: concrete, concrete material, brick or stone masonry. (2) Steel structure with external walls of nonflammable material or covered with noncombustible material.
173 C: Wood Frame with Fire Insulation Dwellings (1) Wood frame with external walls of any of the following: cement or mortar plating, stone pitching or tile hinging. (2) Steel structure that does not come under Class B. Excluding building with external walls of boarding and/or synthetic resin hanging and/or cloth hanging.
174 D: Other than A, B, C; or General Wood Dwellings Building other than Class A, B, and C.
175 SP: Reinforced Concrete Buildings Main structure (column, beam, and floor) is constructed of concrete and all external walls are of any one of the following: concrete, concrete material, brick, or stone masonry.
176 1: Steel with Fire Insulation Buildings (1) Main structure (column, beam, and floor) is constructed of concrete or steel covered with noncombustible material. Roof and external walls are built using nonflammable material. (2) Main structure (column, beam, and floor) is constructed of wood and/or steel covered with noncombustible material. Roof and external walls are built of or covered by nonflammable and/or semi-nonflammable material. Column, beam, floor, and external walls are to be resistant against the heat under normal fire conditions for at least 1 hour.
177 2: General Steel Buildings (1) External walls consist of any one of the following: concrete / concrete block / brick / stone masonry. (2) Steel structure with external walls of nonflammable and/or semi-nonflammable material or covered with noncombustible material. (3) Main structure (column, beam, and floor) is constructed of wood and/or steel covered with noncombustible material. Roof and external walls consist of or are covered by nonflammable and/or semi-nonflammable materials. Column, beam, floor, and external walls to be resistant against the heat under normal fire conditions for at least 45 minutes.
178 3: Wood Frame with Fire Insulation Buildings (1) Wood frame (and not applicable to Class 1 or 2) with external walls of nonflammable and/or semi-nonflammable material or covered with noncombustible material. (2) Steel structure that does not come under Class 1 or 2. Excluding building with external walls of boarding and/or synthetic resin hanging and/or cloth hanging.
179 4: Other than SP, 1, 2, 3; or General Wood Frame Buildings other than Class SP, 1, 2, and 3.