01STRUCTURALSTEEL.AI

MLIT · LEGISLATION

Building
Standard Law

Building Standard Law of Japan and Enforcement Orders

§ 01

Overview

What this standard covers

The statutory framework for structural design in Japan, including the structural calculation confirmation process and fabricator grading.

The statutory framework for structural design in Japan, including the structural calculation confirmation process and fabricator grading.

Who uses it

Structural engineers and checkers verifying member, connection and stability resistance.

§ 02

Details

Reference data

Standard number
Building Standard Law
Title
Building Standard Law of Japan and Enforcement Orders
Organisation
MLIT
Country
Japan
Region
Far East
Subject
Design codes
Subcategory
Legislation
Type
LEGISLATION
Application
Mandatory
Availability
Free
Status
CURRENT
Roles
design standard
Last verified
2026-09-06

Official source: mlit.go.jp

§ 03

Related

Standards used alongside this one

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    Abu Dhabi International Building Code

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  • AISC 341

    Seismic Provisions for Structural Steel Buildings

    Requirements for seismic force resisting systems, protected zones, demand critical welds and member ductility.

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  • AISC 360

    Specification for Structural Steel Buildings

    The US design specification for steel buildings, covering LRFD and ASD member and connection design; adopted by reference in the International Building Code.

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  • BS EN 1991-1-1

    Eurocode 1: Actions on structures — Densities, self-weight and imposed loads

    The companion loading code to Eurocode 3, giving densities, self-weight and imposed floor and roof loads.

    United KingdomDesign codesCURRENTPaid

  • BS EN 1993-1-1

    Eurocode 3: Design of steel structures — General rules and rules for buildings

    The core UK design code for steel buildings: cross-section classification, member resistance, buckling and global analysis, used with the UK National Annex.

    United KingdomDesign codesCURRENTPaid

Sourcing, review and use

Status

Editorial reference information compiled and maintained by the StructuralSteel.ai team. It is not a design certificate and is not issued under an engineer's seal.

Last reviewed

Calculations

Any figures produced on this page are indicative estimates for early sizing and comparison only — they are not engineered design outputs.

References

Final member selection, loading, connection design, fire design, fabrication and compliance must be verified for your specific project by a suitably qualified structural engineer. Standards are revised; check the edition in force where the work is built.

Verification

StructuralSteel.ai provides technical reference information and links to authoritative sources. Project specifications, applicable legislation, current standards editions and requirements of the responsible engineer or authority should always be verified before fabrication or supply.