Civil Air Defense | Article 7. 4. 8 of the “Design Code for Civil Air Defense Engineering Combining Peace and War” DB11/994-2021: 4-6 spare protective pipes should be embedded in
In my social circle, some people are still staying up late at the design institute to catch up on drawings; Someone has already switched to real estate operations; Someone is
In recent years, with the increasing demand for building openings and indoor space freedom, the Japanese construction industry has attempted to use a new seismic analysis method called “wallstat”, a