ERTEK BUILDING SYSTEM PRESENTATION AND PROPAGATION OF BUILDING TECHNOLOGY |
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Three-dimensional Model of the Structural Skeleton The file Skeleton-3D.dwg, for Autocad (version 2000 or later), includes a detailed 3D model of the sample ERTEK structural skeleton presented in Figure 1. Within this model detailed models of the structural elements "pre-slab", "foundation unit" and "column". are presented properly assembled, forming the structural skeleton. These models can be used for the production of both technical drawings and material schedules. The incorporation of sewage pipes, as well as underfloor heating/cooling installationis also presented in the sample. Detailed information on the content is included in section Documentation of the file Skeleton-3D.dwg . All the computer-created 3D views presented in this website resulted from 3D models included in the file Skeleton-3D.dwg. Figure 1 Documentation of the file Skeleton-3D.dwg The ERTEK structural elements are represented in the file Skeleton-3D.dwg as blocks. The innermost objects within each block are 3D Solids, which makes possible the calculation of their volume. Objects of different material belong to different layers. As a consequence, given each material's cost per volume unit, both the quantity and the cost of each material can be calculated in detail through the table that maps layers to materials. This makes possible to verify the respective data presented in the scheduling spreadsheet. The file Skeleton-3D.dwg includes the following blocks:
The COLUMN, PRE-SLAB and FOUNDATION-UNIT block references belong to the layers SKEL_COLS, SKEL_ SLAB and SKEL_FOUNDATION-SLAB respectively. The layers STAIR-SLAB and STAIR-TREAD respectively include the concrete part and the covering elements (treads – risers) of the sample stair unit. As the latter is not included in the objects to be scheduled, it does not consist of 3D Solids.
1.3 Notes that concern the estimation of the volume of concrete. The total volume of concrete in the construction consists of the concrete in the columns, the slab units and the foundation units. The overall volume of concrete in the columns is represented by the 3D Solid in the layer COL-CONCRETE within the block COLUMN. The concrete in both the slab units and the foundation unitsis not represented in the model. Only the concrete in the pre-slab—which is part of a slab unit—is represented (block PRE-SLAB, layer PRE-SLAB-CONCRETE). The overall volume of concrete in a typical slab unit, having dimensions 3.60 × 3.60 m, is the volume of a 3.60 × 3.60 X 0.22 m box, while the overall volume of concrete in the respective foundation unit is the volume of a 3.60 × 3.60 X 0.24 m box. In all cases, the real volume of concrete in each structural element is the overall volume minus the volume of the internal elements (such as armature, expanded polyurethane etc).
1.4 Technical drawings and material scheduling The drawing units in the file Skeleton-3D.dwg represent meters. You can open this file in Autocad (version 2000 or later). Then you can use Autocad commands to get information or create 2D drawings from the 3D model by following the guidelines given next.
In order to use properly the aforementioned commands consult the Autocad reference manual
Static analysis of the structural elements
Terms and procedure of purchase
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