Z. BUILDING STRUCTURE ELEMENTS
Z-01. Concrete
Z-01-01. Concrete slab
Z-01-02. Concrete column
Z-01-03. Concrete upstand
Z-01-04. Concrete downstand
Z-01-05. Concrete wall
Z-01-06. Concrete beam
Z-02. Steel
Z-02-01. Steel column
Z-02-02. Steel beam
Z-02-03. Steel balcony