Dr. Bakko's Structural LAB.

For the people who wants to live in Japan safely

発生年 都道府県 最大震度 地震地域係数 1995/1 兵庫 7 1.0 2000/10 鳥取 6強 0.9 2003/7 宮城 6強 1.0 2004/10 新潟 7 0.9 2007/3 石川 6強 0.9 2007/7 新潟 6強 0.9 2008/6 岩手 6強 1.0 宮城 6強 1.0 2011/3 宮城 7 1.0 福島 6強 1.0, 0.9 茨城 6強 1.0 …

Welding-closed rebar for shear

Concrete column has 2 kinds of rebar. The thick rebar parallels the column is called “main rebar” and the thin rebar surrounding main rebar is called “hoop rebar”. □■□ Question ■□■ In some brochures of condominium, it is insisted that “Thi…

Exploring of Housing exhibition: Check the sales person

I like visiting a model room. I also like visiting a model house. In housing exhibition, we can see a lot of houses at once. I tend to ask a maniac question unintentionally. □■□ Question ■□■ Is a sales person at housing exhibition reliable…

An Inconvenient Truth of TAISHIN, SEISHIN and MENSHIN

In many sites, difference and feature of TAISHIN (earthquake resistant), SEISHIN (vibration control) and MENSHIN (seismic isolation) are introduced. In the brochures of condominium, technical terms like “damper” or “laminated rubber bearin…

Tale of Stiff, Strong and Safety:House edition

Japanese word “GASSHIRI” has a meaning “solid”, “robust” or “stable”. It can be said “stiff and strong”. “GASSHIRI house” will offer safety life for natural disasters. □■□ Question ■□■ To realize “GASSHIRI”, which is more important, “stiff…

Double rebar arrangement of Concrete wall

Rebars are arranged into concrete wall both vertically and laterally. “Double rebar arrangement” means that the 2 pairs of these vertical and lateral rebars are arranged into concrete wall. □■□ Question ■□■ In some brochures of condominium…