Building section and staircases of port-portal type of 7 plant buildings that includes a detailed view of front sectional view, flooring view, dimensions view, staircase sections of all floors, staircase vest scenario, ceramic floor, horizontal section, tapizon novoflor corrugated beige, ceramic floor celima color blanco, foot print ceramic, novacel glue, steps details, supportive wooden railing installation, base floor oncrete plan, wall construction and much more of stairways details.