By using the ΕΡΤΕΚ_EN.xls spreadsheet and following the instructions you can enter:

• The prices of the materials, as well as the prices of labor and machinery hire, holding in your region.
• General specifications (plot covered area, built-up area) of a building project.
• he number of workers and machines that you can devote for the production.

    The spreadsheet calculates:

• The production cost of the structural skeletonincluding materials, labor, stair construction and pipework installation, analyzed in absolute values and percentage according to types of structural elements, materials and construction works.
• The duration of the production process, analyzed by construction work, as well as a time scheduling diagram.

    Besides the production infrastructure reported in the spreadsheet, bars made of structural steel should be used as molds for the production of structural elements. The bars have an L-shaped cross section, weight  20 kg per running meter, while their total length should be equal to the length of the outline of a typical floor. Their price is not included in the price of the building project, as the bars are reusable. The price of the bars for the example case study of the ERTEK system is close to 1000€ if the price of structural steel is 600€ / tn.

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