Building Code and Membrane Structural Buildings

2000年の建築基準法改正によって特殊な材料・工法を規定した第38条が削除されました。
従来、この条文によって認定されていた『中小規模膜構造建築物技術基準』『特定膜構造建築物技術基準』はその効力を失い、
建築基準法における膜構造建築物の取り扱いが変わりました。
現行法において適用される下記の規定を遵守して膜構造建築物を設計する必要があります。

	Current law (since June 2002)	Former Law (~May 2002)
Structural provisions	Ministry of Land, Infrastructure, Transport and Tourism Notification No. 666 of 2002	旧法第38条及び第67条の2に基づき大臣認定された『中小規模膜構造建築物技術基準』『特定膜構造建築物技術基準』
Fire Prevention Regulations	All building code related laws and regulations (as for general buildings)
Material Regulations	Ministry of Construction Notification No. 1446 of 2000

Structural provisions

2000年の建築基準法改正によって特殊な材料・工法を規定した第38条が削除されました。
従来、この条文によって認定されていた『中小規模膜構造建築物技術基準』『特定膜構造建築物技術基準』はその効力を失い、建築基準法における膜構造建築物の取り扱いが変わりました。また2024年の告示改正により内容が大きく変わりました。

平成14年国交省告示666号の適用範囲

	framework-membrane structure	Suspension Membrane Structure Building
terms	骨組等又は膜面の周囲の構造用ケーブル（片側に膜が張られているもの）で囲まれる投影面積が1,000㎡以内	以下3種類の条件のいずれかを満たすもの ①骨組等又は膜面の周囲の構造用ケーブル（片側に膜が張られているもの）で囲まれる投影面積が1,000㎡以内 ②仮設建築物で強風時に撤去もしくは膜下ろしをすることを条件として特定行政方の許可を受けた場合 ③以下の2つの条件を満たす場合・支柱の倒壊その他構造耐力上重要な部分の安全上支障のある変形もしくは損傷が生じない構造・投影面積1,000㎡以内に膜面を分割し飛来物等による膜材料の引裂き伝播を防止する構造
scale	unlimited	unlimited

*Scales and structures other than those listed above (e.g., air membranes) are outside the scope of application of the Notification.

2024年告示改正に伴う新旧対応表

2024年告示改正に伴う技術的助言

骨組等又は膜面の周囲の構造用ケーブル（片側に膜が張られているもの）で囲まれる投影面積が1,000㎡以内
（サスペンション膜構造については、上記以外で可能な条件もあります。）

膜構造で変わる日本の建築

Fire Prevention Regulations

Membrane buildings must also comply with the fire protection provisions of the Building Code.
Please use the Fire Prevention Regulations Checker for the application of membrane materials, etc.
Easily find membrane materials that comply with fire codes. For the membrane building you are trying to determine, please select the applicable details in order.
For more information, please feel free to contact us.

precautions

Basically, the judgment is based on fire prevention regulations only (structural regulations are not taken into account). (Structural provisions are not taken into consideration.)
No consideration is given to laws and regulations other than the Building Standard Law.
Establishment of Compliance Code (2006)
The results are indicated as "Membrane materials A to C" as the most legible indication, but there is no provision for such a name under the current law.
Tent warehouses and wooden buildings are not supported.

Checker for fire regulations for membrane buildings

A fire code checker is in preparation that will make it easy to find membrane materials that comply with fire codes.
Please feel free to contact us for more information on fire prevention regulations.

Material Regulations

Membrane materials used for membrane structural buildings must be materials approved by the Minister as "designated building materials" in accordance with Article 37, Item 2 of the Building Standard Law. (The quality standards for membrane materials are stipulated in the Ministry of Construction Notification No. 1446 of 2000, Appended Table 2, No. 18.) Membrane materials certified by the Minister are issued with a "Certificate of Approval" and a "Certificate of Designation" specifying the standard strength required for structural calculations. When designing a membrane building, please confirm the company name and content of these documents.

In accordance with the Ministry of Land, Infrastructure, Transport and Tourism Notification No. 666 of 2000, the membrane materials that can be used for membrane structural buildings are determined. Please be aware of this.