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| NL FR EN DE CZ | February 2008 |
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Dear eNews reader, |
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| Interoperability, a basic necessity for B.I.M. (Building Information Modelling) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
At SCIA we offer all 3 levels of interoperability to our users. Depending the level of sophistication of the third party software, SCIA is offering the best possible exchange of data, with software applications like AutoCAD, Revit, Tekla, Allplan, ... |
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| Product News: SCIA●Steel 2007 service pack 1 is now available | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
  SCIA●Steel has started the new year with the release of SCIA●Steel 2007 – service pack 1 (version 9.0). This version contains new functionalities for everyday use. Here is an overview of the extensions and changes:  DSTV import (all modules)The translation routine of material names in the imported file to SCIA●Steel names has become more flexible. In certain circumstances the user can now choose the required material. Before, this was always determined by the program. DSTV NC import (all modules) Importing plates with contours completed with profile trimmings ('t', 'w' check marks in the DSTV file) is also supported now. Import- export CAD list of materials Users of the CAD list of materials will also notice that the import/export of the surface treatments now occurs on the basis of the abbreviation and no longer of the description. When one receives data of the CAD list of materials from third parties, the required attention should be paid to this.  Supply module Booking the stock: the design of the 'booking window' was changed and extended with more fields that can already be entered during the booking. Booking elements in and out in the stock is now protected with new user rights. In the previous versions only the presence of the license was checked when booking in and out, whereas now two conditions have to be met in order to enter/remove something in the stock: the presence of a license and the import/export duty. The upgrade procedure of service pack 1 is designed in such a way that the right to book in and out is automatically attributed to all users so that the application will work in the same way after upgrading.  You can download service Pack 1 for SCIA●Steel 2007 (version 9.0) from our Website. If you have a maintenance contract, but you don’t have a user name and password you can apply for it here.
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| The Market: Construction in France, towards a more moderate growth in 2008 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Calculating a prestressed concrete bridge in SCIA•ESA PT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 Yearly, on 'Concrete Day', the 'Belgische Betongroepering', the Belgian Concrete Organization, awards two thesis prizes. The prize in the category "Academies" was awarded to Ms. Kim van Tittelboom (KaHo Sint–Lieven, Belgium) for her work 'Calculating a prestressed concrete bridge'. Kim chose the SCIA software "SCIA•ESA PT" to perform the calculations. Summary of the study In this final project the recalculation of a non-approved design of the Tweede Scheldebrug in Temse (Belgium) is performed. This hyperstatic structure consists of six linked up prestressed concrete tubes. In the first stage the loads on the road bridge were determined by applying the codes NBN B 03-101 (loads of constructions - road bridges) and NBN B 03-002 (wind load on constructions). Then the most loaded tube was determined. By means of the finite elements method (SCIA•ESA PT) as well as the Bares-Massonet method a comparison of the results was made. Afterwards the most adverse position of the convoy was determined with the help of influence lines. SCIA•ESA PT was used to determine the influence lines.
After determining the loads on the most loaded tube, the load combinations were written out and the envelope moment line was formed. Prestressed structures are dimensioned in the service limit state. A rare load combination was used. Then the course of the prestress tendons was established. This course had to approach the form of the envelope moment line as good as possible and had to be chosen in such a way that the allowable stresses in the bridge were not exceeded. When the stresses in the structure were determined, the immediate and time-dependent prestress losses were taken into account. When determining the effect of the prestressing in the hyperstatic structure, two different methods were used. On the one hand exterior actions were put on to the structure, on the other hand the module 'prestressing' in SCIA•ESA PT was used. The results of both methods were compared to each other. In a next stage, the structure was checked on failure due to bending and shear force. After these general calculations two structural parts were examined in detail. A design of an end block was made. When studying the anchorage zone, the "short-beam"- analogy and the equivalent symmetrical prisms method was used.
As a second design detail, the joint between the cantilevers and the central parts were examined. Both the reinforcement necessary to include the tensile forces in the anchorage zone was determined as well as the reinforcement needed to enable the console action between both elements. When dimensioning the console, a frame model with traction/pressure members was used. After determining the required amount of reinforcement near the joint, a reinforcement scheme was drawn up. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Tips & Tricks: How to draw a 3D polygon with Allplan | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Step 6. To put these 3D points into a 3D polygon, you first have to export the 3D points with the function File interface from the module Overview.
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A basic level is to enable users to export and import data in their application software; e.g. a CAD application – let us say for reinforcement drawings – should be able to read the design data from a CAE software – the required necessary reinforcement as in structural members.
According to figures of the Ministry of Ecology, Development and Durable Planning, the construction sector knew a big rise in activities in 2007 with 171 billion Euros of sales turnover, a rise of 4,3% compared to 2006.
For 2008, the growth should be more moderate.
Step 1. Start drawing the top view of the 3D polygon in 2D, for this the default 2D functions are available: line, circle, polygon, clothoid, ...
