"big roof slab, only four pillars had been put in the middle point of the sides of the roof, so the overhanging corners tended to suffer severe deformation. l proposed they put at least two pillars on each side, that is, to support the roof on a" - Google-Suche

https://www.google.de/search?q=%22big+roof+slab,+only+four+pillars+had+been+put+in+the+middle+point+of+the+sides+of+the+roof,+so

Keine Beschreibung vorhanden.