Japanese Building & Interior Guide (EN)

Japanese Building & Interior Guide (EN)

What Is Interior Finish Regulation in Japan?

— Which Types and Sizes of Buildings Are Subject to Regulation—In Japan, interior finish regulation is a legal requireme...
Japanese Building & Interior Guide (EN)

Restoration (Make-Good) Work in Commercial Leases in Japan

A Complete and Practical Guide for Tenant Fit-Out ProjectsIn Japan, restoration (also called “make-good”) obligations ar...
Japanese Building & Interior Guide (EN)

Construction Categories in Japan: What Are A, B, and C Work?

A Practical Guide for Tenant Fit-Out Projects and Asset ClassificationIn Japan, A Work, B Work, and C Work are construct...
Japanese Building & Interior Guide (EN)

Where Septic Tanks Are Required, How They Work, Understanding BOD (Influent vs Effluent), and the “One Tank per Lot” Principle

A septic tank (Johkasou) is an on-site wastewater treatment system used when a building cannot connect to a public sewer...
Japanese Building & Interior Guide (EN)

What Is “Existing Non-Conformity” in Japan?

A Practical Guide to Buildings That Were Legal When Built but No Longer Meet Current CodesIn Japan, “existing non-confor...
Japanese Timber Construction (EN)

Basic Wall Structure: Understanding Wood-Frame Walls vs. LGS Walls, Stud Sizes (65mm / 75mm / 100mm), and Proper Applications

Walls look simple on the surface, but inside,wood-frame wallsandLGS (light gauge steel) wallsused in commercial interior...
Japanese Timber Construction (EN)

Basic Floor Structure in Wood-Frame Construction: Understanding Joists, Girders, and Posts

A traditional Japanese wood-frame floor may look simple on the surface,but underneath the flooring it is built fromthree...
Japanese Timber Construction (EN)

Basic Wood-Frame Construction: Understanding Posts, Sills, and Beams

To understand wood-frame construction, you only need to start withthree basic structural elements:posts, sills, and beam...
Japanese Timber Construction (EN)

Traditional Japanese Timber Construction

Foundations, Sill Plates, and Pile SystemsTraditional Japanese timber construction (Zairai-Kōhō) is based on a framework...
Japanese Building & Interior Guide (EN)

A Simple Guide to Japan’s Ventilation Systems

Propeller Fans, Sirocco Fans, and Energy Recovery Ventilators (ERV)In Japan, ventilation systems such as propeller fans,...